Prof. Tianxu Zhang Profile

Prof. Tianxu Zhang

Professor at Huazhong Univ of Science and Technology

SPIE Involvement:

Author | Editor

Publications (118)

Proceedings Article | 14 February 2020 Paper

A tracking method to stabilize a target in the region of inherent noise in an image

Shuai Dong, Tianxu Zhang

Proc. SPIE. 11429, MIPPR 2019: Automatic Target Recognition and Navigation

KEYWORDS: Target detection, Detection and tracking algorithms, Target recognition, Image processing, Servomechanisms, Feature extraction

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Proceedings Article | 14 February 2020 Paper

A novel spatial-frequency filtering scheme for x-ray angiograms with simultaneous denoising and enhancement

Zhenghua Huang, Liang Chen, Hao Fang, Tianxu Zhang

Proc. SPIE. 11431, MIPPR 2019: Parallel Processing of Images and Optimization Techniques; and Medical Imaging

KEYWORDS: Image enhancement, X-rays, Angiography, X-ray imaging, Denoising, Image filtering, Wavelets, Image quality, 3D image reconstruction, Image processing

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Proceedings Article | 14 February 2020 Paper

Spectral group attention networks for hyperspectral image classification

Zhengtao Li, Zhongyang Wang, Hai Xu, Yaozong Zhang, Tianxu Zhang

Proc. SPIE. 11428, MIPPR 2019: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Image classification, Hyperspectral imaging, Feature extraction, Neural networks, Data modeling, Convolution, Spectroscopy

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Proceedings Article | 14 February 2020 Paper

A small dim targets detection method with dark-spots interference based on infrared images

Shuai Dong, Tianxu Zhang, Siman Lv

Proc. SPIE. 11429, MIPPR 2019: Automatic Target Recognition and Navigation

KEYWORDS: Target detection, Image filtering, Linear filtering, Infrared detectors, Infrared imaging, Image processing

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Proceedings Article | 14 February 2020 Paper

Air target tracking method based on spectral unmixing

Siman Lv, Tianxu Zhang, Shuai Dong

Proc. SPIE. 11429, MIPPR 2019: Automatic Target Recognition and Navigation

KEYWORDS: Infrared radiation, Image enhancement, Target detection, Image segmentation, Image processing, Target designation, Infrared detectors, Target recognition, Remote sensing

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Proceedings Article | 14 February 2020 Paper

An accurate de-striping method based on cubic Hermite spline interpolation and gradient information of stripes

Yaozong Zhang, Hao Fang, Zhenghua Huang, Zhengtao Li, Xiaoming Li, Tianxu Zhang, Hanyu Hong

Proc. SPIE. 11428, MIPPR 2019: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Remote sensing, Data processing, MODIS, Image processing

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Proceedings Article | 14 February 2020 Paper

Combined infrared simulation and pix2pix model for underground target detection

Yifan Wu, Zhengtao Li, Xin Qu, Tianxu Zhang

Proc. SPIE. 11429, MIPPR 2019: Automatic Target Recognition and Navigation

KEYWORDS: Infrared radiation, Infrared imaging, Remote sensing, Target detection, Thermal modeling, Infrared sensors, Infrared detectors, Solar radiation models, Thermography, 3D modeling

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Proceedings Article | 14 February 2020 Paper

Cloud bottom height estimation methods for optical imaging terminal guidance

Shuai Liang, Meng Liu, Zhongyang Wang, Tianxu Zhang

Proc. SPIE. 11430, MIPPR 2019: Pattern Recognition and Computer Vision

KEYWORDS: Clouds, MODIS, Particles, Satellites, Optical imaging, Machine learning, Mass attenuation coefficient, Liquids, Meteorological satellites, Meteorology

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Proceedings Article | 14 February 2020 Paper

Infrared spectrum image inversion method for augmenting data sets

Shuai Liang, Meng Liu, Zhongyang Wang, Tianxu Zhang

Proc. SPIE. 11428, MIPPR 2019: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Infrared radiation, Infrared imaging, Long wavelength infrared, Mid-IR, Atmospheric particles, Image transmission, Atmospheric modeling, Transmittance, Image processing

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Proceedings Article | 14 February 2020 Paper

Hierarchical attention networks for hyperspectral image classification

Zhengtao Li, Hai Xu, Yaozong Zhang, Tianxu Zhang

Proc. SPIE. 11432, MIPPR 2019: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications

KEYWORDS: Image classification, Hyperspectral imaging, Sensors, Data processing, Feature extraction, Model-based design, Statistical modeling, Neural networks, Convolution, Composites

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Proceedings Article | 14 February 2020 Paper

Research on target salient region unmixing method

Siman Lv, Tianxu Zhang, Shuai Dong

Proc. SPIE. 11428, MIPPR 2019: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Infrared radiation, Image segmentation, Infrared imaging, Atmospheric modeling, Atmospheric corrections, Target detection, Atmospheric sensing, Target recognition, Denoising

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Proceedings Article | 6 May 2019 Paper

Robust real-time contact-point detecting and tracking by a horizontal-vertical enhancement method

Zhen Huang, Yiquan Liang, Zhenghua Huang, Yaozong Zhang, Tianxu Zhang

Proc. SPIE. 11069, Tenth International Conference on Graphics and Image Processing (ICGIP 2018)

KEYWORDS: Infrared imaging, Infrared radiation, Detection and tracking algorithms, Image enhancement, Image processing, Infrared detectors, Visible radiation, Cameras, Edge detection

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Proceedings Article | 24 January 2019 Paper

CGAN for simulation and digital image correction of aero transmission effect and aero heat radiation effect

Yi Bo Su, Zhong Yang Wang, Shuai Liang, Tian Xu Zhang

Proc. SPIE. 11052, Third International Conference on Photonics and Optical Engineering

KEYWORDS: Radiation effects, Digital imaging, Image transmission, Imaging systems, Thermal effects, Geometrical optics, Signal to noise ratio, Computer programming, Aerodynamics, Gallium nitride

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Proceedings Article | 6 March 2018 Paper

Sparse representations via learned dictionaries for x-ray angiogram image denoising

Jingfan Shang, Zhenghua Huang, Qian Li, Tianxu Zhang

Proc. SPIE. 10610, MIPPR 2017: Parallel Processing of Images and Optimization Techniques; and Medical Imaging

KEYWORDS: Image processing, Image denoising, Angiography, Image restoration, Denoising, Associative arrays, X-ray imaging, X-rays, Medical imaging, Wavelets

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Proceedings Article | 14 December 2015 Paper

Super pixel density based clustering automatic image classification method

Mingxing Xu, Chuan Zhang, Tianxu Zhang

Proc. SPIE. 9812, MIPPR 2015: Automatic Target Recognition and Navigation

KEYWORDS: Image classification, Image segmentation, Image processing, Image processing algorithms and systems, Detection and tracking algorithms, Data processing, Data mining, Algorithms, Information technology, Image resolution

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Proceedings Article | 14 December 2015 Paper

A novel scatter-matrix eigenvalues-based total variation (SMETV) regularization for medical image restoration

Zhenghua Huang, Tianxu Zhang, Lihua Deng, Hao Fang, Qian Li

Proc. SPIE. 9814, MIPPR 2015: Parallel Processing of Images and Optimization; and Medical Imaging Processing

KEYWORDS: Medical imaging, Image restoration, Image processing, Deconvolution, Expectation maximization algorithms, Computer simulations, Liver, Visualization, Image deconvolution, Neuroimaging

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Proceedings Article | 24 November 2014 Paper

Multiple moving objects detection with movement evidence region growing in spatial-temporal domain

Tianxu Zhang, Gang Zhou, Chao Zhang, Hao Li

Proc. SPIE. 9301, International Symposium on Optoelectronic Technology and Application 2014: Image Processing and Pattern Recognition

KEYWORDS: Motion detection, Motion measurement, Detection and tracking algorithms, Motion estimation, Motion analysis, Space reconnaissance, Space operations, Motion models, Mathematical modeling, Image sensors

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Proceedings Article | 27 October 2013 Paper

The improved algorithm for three-dimensional artery reconstruction of monoplane x-ray angiographic images

Yining Huang, Tianxu Zhang, Jinfeng Ma, Yaxun Wei

Proc. SPIE. 8920, MIPPR 2013: Parallel Processing of Images and Optimization and Medical Imaging Processing

KEYWORDS: Image segmentation, Reconstruction algorithms, 3D image processing, Angiography, Image processing, Arteries, 3D image reconstruction, 3D displays, X-ray imaging, X-rays

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Proceedings Article | 26 October 2013 Paper

Image sensors with electrically tunable spatial resolution based on liquid crystal microlens array with three-layered patterned electrode

Qing Tong, Xinyu Zhang, Hongshi Sang, Tianxu Zhang, Changsheng Xie

Proc. SPIE. 8917, MIPPR 2013: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Electrodes, Liquid crystals, Spatial resolution, Optical sensors, Refractive index, Microlens array, Computer architecture, Image sensors, Sensors, Computer simulations

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Proceedings Article | 26 October 2013 Paper

Hyperspectral imaging sensor array based on diffractively driving infrared beams with chosen wavelength into designated subsensors

Yong Qu, Xinyu Zhang, Hongshi Sang, Tianxu Zhang, Changsheng Xie

Proc. SPIE. 8917, MIPPR 2013: Multispectral Image Acquisition, Processing, and Analysis

KEYWORDS: Diffraction, Diffractive optical elements, Micro optics, Optical components, Infrared radiation, Light wave propagation, Infrared imaging, Hyperspectral imaging, Image sensors, Sensors

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Proceedings Article | 27 November 2012 Paper

Addressable wide dynamic range and high precision digital control device for adaptive liquid crystal microlenses array

Xin Chen, Shengwu Kang, Xinyu Zhang, An Ji, Changsheng Xie, Tianxu Zhang

Proc. SPIE. 8555, Optoelectronic Devices and Integration IV

KEYWORDS: Liquid crystals, Control systems, Microlens, Amplifiers, Microlens array, Signal generators, Optical properties, Human-machine interfaces, Adaptive control, Electrodes

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Proceedings Article | 27 November 2012 Paper

Photoelectric response performance of nano-graphene film over infrared substrates

Jinhui Gong, Xinyu Zhang, Furi Lin, An Ji, Changsheng Xie, Tianxu Zhang

Proc. SPIE. 8555, Optoelectronic Devices and Integration IV

KEYWORDS: Graphene, Semiconducting wafers, Silicon, Infrared radiation, Germanium, Gallium arsenide, Infrared lasers, Laser irradiation, Optoelectronics, Metals

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Proceedings Article | 27 November 2012 Paper

Three-dimensional modeling of nematic liquid crystal micro-optics structures with complex patterned electrodes

Xing Rong, Shengwu Kang, Xinyu Zhang, An Ji, Changsheng Xie, Tianxu Zhang

Proc. SPIE. 8555, Optoelectronic Devices and Integration IV

KEYWORDS: Liquid crystals, Micro optics, 3D modeling, Electrodes, Electro optical modeling, Molecules, Optics manufacturing, Optoelectronics, Computer simulations, Pattern recognition

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Proceedings Article | 27 November 2012 Paper

Liquid crystal microlens with tunable-focus over focal plane driven by low-voltage signal

Shengwu Kang, Xing Rong, Xinyu Zhang, Changsheng Xie, Tianxu Zhang

Proc. SPIE. 8555, Optoelectronic Devices and Integration IV

KEYWORDS: Electrodes, Liquid crystals, Microlens, Glasses, Refractive index, Molecules, Optical properties, Optoelectronics, Anisotropy, Polarizers

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SPIE Journal Paper | 19 April 2012

Universal deblurring method for real images using transition region

Hanyu Hong, Liangcheng Li, Tianxu Zhang, In Kyu Park

OE Vol. 51 Issue 4

KEYWORDS: Point spread functions, Optical engineering, Image analysis, Edge detection, Motion models, Infrared imaging, Infrared radiation, Terahertz radiation, Convolution, Chemical elements

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SPIE Journal Paper | 31 January 2012

Robust and fast Hausdorff distance for image matching

Hu Zhu, Tianxu Zhang, Luxin Yan, Lizhen Deng

OE Vol. 51 Issue 1

KEYWORDS: Optical engineering, Pattern recognition, Distance measurement, Algorithm development, Data processing, Information technology, Artificial intelligence, Electronics engineering, Machine vision, Computer vision technology

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Proceedings Article | 5 December 2011 Paper

A novel algorithm and its VLSI architecture for connected component labeling

Hualong Zhao, Hongshi Sang, Tianxu Zhang

Proc. SPIE. 8005, MIPPR 2011: Parallel Processing of Images and Optimization and Medical Imaging Processing

KEYWORDS: Image processing, Clocks, Very large scale integration, Raster graphics, Binary data, Remote sensing, Medical imaging, Feature extraction, Electroluminescence, Evolutionary algorithms

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Proceedings Article | 5 December 2011 Paper

Adaptive edge detection in a global optimal observation scale

Zhenzhu Zheng, Tianxu Zhang

Proc. SPIE. 8005, MIPPR 2011: Parallel Processing of Images and Optimization and Medical Imaging Processing

KEYWORDS: Edge detection, Detection and tracking algorithms, Evolutionary algorithms, Image processing algorithms and systems, Image segmentation, Pattern recognition, Artificial intelligence, Machine vision, Computer vision technology, Parallel processing

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Proceedings Article | 8 September 2011 Paper

Moving object detection based on segmentation of optical flow field in IR image sequence

Haifeng Lu, Tianxu Zhang

Proc. SPIE. 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications

KEYWORDS: Optical flow, Image segmentation, Infrared imaging, Motion estimation, Image processing algorithms and systems, Motion measurement, Detection and tracking algorithms, Image classification, Lutetium, Cameras

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SPIE Journal Paper | 1 June 2011

Clutter-adaptive infrared small target detection in infrared maritime scenarios

Xiaoping Wang, Tianxu Zhang

OE Vol. 50 Issue 06

KEYWORDS: Target detection, Infrared radiation, Infrared imaging, Infrared detectors, Image segmentation, Image filtering, Feature extraction, Detection and tracking algorithms, Digital filtering, Optical engineering

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SPIE Journal Paper | 1 May 2011

Ship target detection and tracking in cluttered infrared imagery

Jiawei Wu, Shiyi Mao, Xiaoping Wang, Tianxu Zhang

OE Vol. 50 Issue 05

KEYWORDS: Target detection, Infrared imaging, Infrared radiation, Image segmentation, Image filtering, Infrared detectors, Infrared search and track, Forward looking infrared, Optical filters, Optical tracking

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SPIE Journal Paper | 1 April 2011

Photoelectrical response properties of a linear high-temperature superconducting sensor coupled with a refractive microlens array

Xinyu Zhang, Hui Li, Kan Liu, Jun Luo, Chang-Sheng Xie, An Ji, Tianxu Zhang

JM3 Vol. 10 Issue 02

KEYWORDS: Sensors, Microlens, Superconductors, Quartz, Microlens array, Infrared sensors, Photoresist materials, Infrared radiation, Thin films, Black bodies

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SPIE Journal Paper | 1 April 2011

Improved level-set framework-based algorithm for small infrared target detection

Dengwei Wang, Tianxu Zhang, Luxin Yan, Xiaoyong Bian, Wenjun Shi

OE Vol. 50 Issue 04

KEYWORDS: Target detection, Image filtering, Optical filters, Detection and tracking algorithms, Infrared radiation, Infrared detectors, Infrared imaging, Wavelets, Adaptive optics, Optical engineering

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SPIE Journal Paper | 1 January 2011

Development and characterization of an electrically tunable liquid-crystal Fabry-Pérot hyperspectral imaging device

Kan Liu, Hui Li, Xinyu Zhang, Dehua Li, Xue Jiang, Changsheng Xie, Tianxu Zhang

JRS Vol. 5 Issue 1

KEYWORDS: Liquid crystals, Transmittance, Imaging spectroscopy, Imaging devices, Refractive index, Modulation, Electrodes, Molecules, Hyperspectral imaging, Prototyping

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SPIE Journal Paper | 1 December 2010

Hough transform relative to a four-dimensional parameter space for the detection of constant velocity target

Jing Hu, Tianxu Zhang

OE Vol. 49 Issue 12

KEYWORDS: 3D acquisition, Target detection, Hough transforms, Signal to noise ratio, Error analysis, Optical engineering, Detection and tracking algorithms, 3D image processing, Tolerancing, Image segmentation

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SPIE Journal Paper | 1 November 2010

Clutter suppression algorithm based on bidirectional local binary pattern for moving point target detection in infrared image sequences

Zhao Cheng, Tianxu Zhang, Luxin Yan, Xiaoping Wang

OE Vol. 49 Issue 10

KEYWORDS: Image processing, Target detection, Image filtering, Binary data, Infrared imaging, Detection and tracking algorithms, 3D acquisition, Infrared radiation, Infrared sensors, Optical engineering

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Proceedings Article | 8 September 2010 Paper

The restoration of large blur image based on POCS algorithm

Jun Luo, Xinyu Zhang, Changsheng Xie, Tianxu Zhang

Proc. SPIE. 7798, Applications of Digital Image Processing XXXIII

KEYWORDS: Image restoration, Point spread functions, Image resolution, Image processing, Motion models, Detection and tracking algorithms, Super resolution, Image quality, Evolutionary algorithms, Data modeling

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Proceedings Article | 20 August 2010 Paper

Accelerating diffractive optics design with GPU-based parallel technique

Kan Liu, Hui Li, Xinyu Zhang, Dehua Li, Mingyue Wei, Bin Li, ChangSheng Xie, Tianxu Zhang

Proc. SPIE. 7786, Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI

KEYWORDS: Diffractive optical elements, Optical design, Finite-difference time-domain method, Fourier transforms, Algorithms, Visualization, Diffraction, Algorithm development, Optimization (mathematics), Genetic algorithms

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Proceedings Article | 18 August 2010 Paper

128×128 elements liquid crystal cylindrical lens array with electrically tunable focal length

Hui Li, Kan Liu, Chen Zhu, Xinyu Zhang, Changsheng Xie, Tianxu Zhang, Xubang Shen

Proc. SPIE. 7775, Liquid Crystals XIV

KEYWORDS: Liquid crystals, Refractive index, Electrodes, Molecules, Glasses, Charge-coupled devices, Adaptive optics, Liquids, Optical fabrication equipment, Lithography

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Proceedings Article | 13 May 2010 Paper

Multi-class target recognition based on adaptive feature selection

Yuehuan Wang, Wei Yao, Yunfeng Song, Nong Sang, Tianxu Zhang

Proc. SPIE. 7696, Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI

KEYWORDS: Feature selection, Target recognition, Remote sensing, Image segmentation, Bridges, Visual process modeling, Feature extraction, Target detection, Integrated modeling, Image classification

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SPIE Journal Paper | 1 March 2010

Moving objects segmentation based on piecewise constant Mumford-Shah model solving by additive operator splitting

Dengwei Wang, Tianxu Zhang, Wenjun Shi, Zhonghua Wang, Xiaoyu Yang, Longsheng Wei

OE Vol. 49 Issue 03

KEYWORDS: Adaptive optics, Image segmentation, Video, Image processing, Optical engineering, Nonlinear filtering, Diffusion, Image filtering, Roads, Performance modeling

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Proceedings Article | 30 October 2009 Paper

Parallel non-uniformity correction of infrared images using CUDA

Peng Chen, Hong-Shi Sang, Ya-Jing Yuan, Tian-Xu Zhang

Proc. SPIE. 7497, MIPPR 2009: Medical Imaging, Parallel Processing of Images, and Optimization Techniques

KEYWORDS: Nonuniformity corrections, Digital signal processing, Calibration, Image processing, Infrared radiation, Sensors, Infrared imaging, Computer programming, Linear filtering, Field programmable gate arrays

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Proceedings Article | 30 October 2009 Paper

Design and implementation of a scalable enhanced high-performance DMA architecture for complex SoC

Hualong Zhao, Hongshi Sang, Tianxu Zhang, Xubang Shen

Proc. SPIE. 7497, MIPPR 2009: Medical Imaging, Parallel Processing of Images, and Optimization Techniques

KEYWORDS: Silicon, Integration, Integrated circuit design, Computer architecture, Image quality, Data processing, Multimedia, Logic, Image processing, System on a chip

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Proceedings Article | 30 October 2009 Paper

Effect of projection number on slice image quality of micro-CT system

Zheng Fang, Hui Gong, Guang Yang, Tianxu Zhang

Proc. SPIE. 7497, MIPPR 2009: Medical Imaging, Parallel Processing of Images, and Optimization Techniques

KEYWORDS: Image quality, Signal to noise ratio, Reconstruction algorithms, Sensors, Quality systems, Computed tomography, X-rays, Image processing, X-ray imaging, Computing systems

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Proceedings Article | 21 August 2009 Paper

Low voltage adaptive 128×128 element liquid crystal micro lens array with electric tunable focal length

Hui Li, Kan Liu, Xinyu Zhang, Tianxu Zhang, Xubang Shen

Proc. SPIE. 7414, Liquid Crystals XIII

KEYWORDS: Liquid crystals, Refractive index, Electrodes, Glasses, Point spread functions, Molecules, Lithography, Microlens array, Etching, Crystals

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Proceedings Article | 18 August 2009 Paper

Smart hyperspectral imaging detection based on electrically tunable liquid-crystal Fabry-Perot microstructure array

Kan Liu, Dehua Li, Hui Li, Xinyu Zhang, Tianxu Zhang

Proc. SPIE. 7457, Imaging Spectrometry XIV

KEYWORDS: Liquid crystals, Imaging spectroscopy, Fabry–Perot interferometers, Transmittance, Infrared imaging, Refractive index, Imaging devices, Molecules, Calibration, Modulation

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Proceedings Article | 5 August 2009 Paper

Detection algorithm for IR ship target in complex background of sea and sky

Xiaoping Wang, Tianxu Zhang, Dengwei Wang, Wenjun Shi

Proc. SPIE. 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications

KEYWORDS: Target detection, Infrared imaging, Image segmentation, Infrared detectors, Detection and tracking algorithms, Optical filters, Image filtering, Wavelets, Wavelet transforms, Digital filtering

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Proceedings Article | 15 November 2007 Paper

Moving point target detection using temporal variance filter in IR imagery

Xiechang Sun, Tianxu Zhang, Meng Li

Proc. SPIE. 6786, MIPPR 2007: Automatic Target Recognition and Image Analysis; and Multispectral Image Acquisition

KEYWORDS: Signal processing, Signal to noise ratio, Image processing algorithms and systems, Infrared imaging, Optical filters, Digital filtering, Image processing, Detection and tracking algorithms, Target detection, Image filtering

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Proceedings Article | 15 November 2007 Paper

Multi-focus image fusion using adaptive Wiener filter

Junhong Hu, Tianxu Zhang, Sheng Zhong, Xujun Chen

Proc. SPIE. 6786, MIPPR 2007: Automatic Target Recognition and Image Analysis; and Multispectral Image Acquisition

KEYWORDS: Image fusion, Filtering (signal processing), Wavelet transforms, Image filtering, Digital filtering, Image processing, Wavelets, Electronic filtering, Image segmentation, Image sensors

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Proceedings Article | 15 November 2007 Paper

Intensity-based correlation for heterogeneous images scene matching

Sheng Zhong, Huimin Cao, Tianxu Zhang

Proc. SPIE. 6786, MIPPR 2007: Automatic Target Recognition and Image Analysis; and Multispectral Image Acquisition

KEYWORDS: Image processing, Digital signal processing, Nonlinear filtering, Signal processing, Filtering (signal processing), Edge detection, Light sources and illumination, Image filtering, Image resolution, Data processing

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SPIE Journal Paper | 1 October 2007

Fast new small-target detection algorithm based on a modified partial differential equation in infrared clutter

Biyin Zhang, Tianxu Zhang, Zhiguo Cao, Kun Zhang

OE Vol. 46 Issue 10

KEYWORDS: Target detection, Image filtering, Infrared imaging, Optical filters, Detection and tracking algorithms, Electronic filtering, Anisotropic filtering, Digital filtering, Partial differential equations, Image processing

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SPIE Journal Paper | 1 February 2007

Fast edge-preserving image restoration based on phase information

Kun Zhang, Tianxu Zhang, Chengjian He, Biyin Zhang, Luxin Yan

OE Vol. 46 Issue 02

KEYWORDS: Image restoration, Image analysis, Signal to noise ratio, Reconstruction algorithms, Point spread functions, Evolutionary algorithms, Optical engineering, Satellite imaging, Satellites, Image quality

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Proceedings Article | 24 October 2006 Paper

A novel description of refractive index in irregular inhomogeneous optical medium

Chunsheng Liu, Xingliang Yin, Tianxu Zhang, Shitao Deng, Xiaotong Li

Proc. SPIE. 6357, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence

KEYWORDS: Refractive index, Ray tracing, GRIN lenses, Atmospheric optics, Temperature metrology, Geometrical optics, Gradient-index optics, 3D modeling, Error analysis, Information operations

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Proceedings Article | 15 March 2006 Paper

3D reconstruction of the coronary tree from two x-ray angiographic views

Nong Sang, Weixue Peng, Heng Li, Zhen Zhang, Tianxu Zhang

Proc. SPIE. 6144, Medical Imaging 2006: Image Processing

KEYWORDS: 3D image processing, 3D modeling, Angiography, Imaging systems, Arteries, X-rays, Image segmentation, 3D image reconstruction, Medical imaging, X-ray imaging

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SPIE Journal Paper | 1 January 2006

Edge-directed adaptive nonuniformity correction for staring infrared focal plane arrays

Tianxu Zhang, Yan Shi

OE Vol. 45 Issue 01

KEYWORDS: Nonuniformity corrections, Optical engineering, Infrared radiation, Staring arrays, Infrared imaging, Binary data, Retina, Visualization, Signal processing, Cell phones

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Proceedings Article | 4 November 2005 Paper

Study on object matching method based on Hausdorff distance

Zhengrong Zuo, Huafeng Chen, Tianxu Zhang

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Forward looking infrared, Distance measurement, Image sensors, Image segmentation, 3D modeling, Feature extraction, Infrared imaging, Infrared radiation, Signal to noise ratio, Facial recognition systems

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Proceedings Article | 4 November 2005 Paper

A modified method of passive ranging using optical flow of target infrared images

Shike Huang, Lin Tao, Tianxu Zhang

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Ranging, Cameras, Image segmentation, Infrared imaging, Infrared radiation, Optical flow, Detection and tracking algorithms, Imaging systems, Digital filtering, 3D image processing

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Proceedings Article | 4 November 2005 Paper

A novel reconfigurable image-processing system using multi-processor

Hai-cen Mao, Tian-xu Zhang, Wei-dong Yang, Meng Li

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Digital signal processing, Image processing, Telecommunications, Field programmable gate arrays, Lithium, Evolutionary algorithms, Computing systems, Signal processing, Time division multiplexing, Data communications

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Proceedings Article | 4 November 2005 Paper

Three-dimensional double directional filter for tracking and detecting moving dim weak target

Meng Li, Tianxu Zhang, Weidong Yang, Haiceng Mao

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Detection and tracking algorithms, 3D acquisition, Target detection, Optical filters, Electronic filtering, Image filtering, Infrared imaging, Image processing algorithms and systems, Image processing, 3D image processing

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Proceedings Article | 4 November 2005 Paper

Adaptive thresholding of digital subtraction angiography images

Nong Sang, Heng Li, Weixue Peng, Tianxu Zhang

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Image segmentation, Angiography, 3D image processing, Blood vessels, Binary data, Image processing, Visualization, Signal to noise ratio, Radiology, Lithium

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Proceedings Article | 4 November 2005 Paper

A new method for ship classification and recognition

Guangzhou Zhao, Fei Wang, Tianxu Zhang

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Principal component analysis, 3D modeling, Neural networks, Feature extraction, Detection and tracking algorithms, Databases, Evolutionary algorithms, 3D image processing, Error analysis, Computer simulations

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Proceedings Article | 4 November 2005 Paper

An algorithm for radar scene matching based on multi-area selection using fuzzy sets

Weidong Yang, Zhengrong Zuo, Tianxu Zhang, Haicen Mao

Proc. SPIE. 6044, MIPPR 2005: Image Analysis Techniques

KEYWORDS: Radar, Radar imaging, Image sensors, Fuzzy logic, Distortion, Synthetic aperture radar, Sensors, Signal to noise ratio, Speckle, Feature extraction

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SPIE Journal Paper | 1 October 2005

Moving weak point target detection and estimation with three-dimensional double directional filter in IR cluttered background

Meng Li, Tianxu Zhang, Weidong Yang, Xiechang Sun

OE Vol. 44 Issue 10

KEYWORDS: Target detection, Detection and tracking algorithms, Infrared imaging, 3D acquisition, Optical filters, Image filtering, 3D image processing, Digital filtering, Image processing, Electronic filtering

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Proceedings Article | 25 May 2005 Paper

Feature selection based on neuro-fuzzy networks

Nong Sang, Yantao Xie, Tianxu Zhang

Proc. SPIE. 5809, Signal Processing, Sensor Fusion, and Target Recognition XIV

KEYWORDS: Feature selection, Fuzzy logic, Network architectures, Detection and tracking algorithms, IRIS Consortium, Pattern recognition, Evolutionary algorithms, Associative arrays, Error analysis, Artificial neural networks

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Proceedings Article | 17 January 2005 Paper

Polymer microlens array integrated with imaging sensors by UV-molding technique

Jianjun Lai, Yue Zhao, Caijun Ke, Xinjian Yi, TianXu Zhang

Proc. SPIE. 5644, Optoelectronic Devices and Integration

KEYWORDS: Microlens array, Polymers, Photoresist materials, Microlens, Polymeric sensors, Optical sensors, Fabrication, Silicon, Charge-coupled devices, Ultraviolet radiation

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SPIE Journal Paper | 1 January 2005

Restoration algorithms for turbulence-degraded images based on optimized estimation of discrete values of overall point spread functions

Tianxu Zhang, Hanyu Hong, Jun Shen

OE Vol. 44 Issue 01

KEYWORDS: Point spread functions, Signal to noise ratio, Turbulence, Condition numbers, Optical engineering, Stochastic processes, Atmospheric turbulence, Fourier transforms, Image restoration, Speckle

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SPIE Journal Paper | 1 December 2003

Fast restoration approach for rotational motion blurred image based on deconvolution along the blurring paths

Hanyu Hong, Tianxu Zhang

OE Vol. 42 Issue 12

KEYWORDS: Deconvolution, Image processing, Estimation theory

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SPIE Journal Paper | 1 October 2003

Improved approach for object location under affine transformation using the Hausdorff distance

Xiaoming Peng, Mingyue Ding, Chengping Zhou, Tianxu Zhang

OE Vol. 42 Issue 10

KEYWORDS: Pattern recognition, Algorithm development, Artificial intelligence, Image processing, Process control, Target recognition, Instrumentation engineering, Sensors, Parallel processing

Proceedings Article | 25 September 2003 Paper

Detection and analysis of moving objects in infrared image sequences based on supervised learning

Tianxu Zhang, Wei Zhang, Jun Shen

Proc. SPIE. 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition

KEYWORDS: Optical flow, Infrared imaging, Infrared radiation, Machine learning, Infrared detectors, Image processing, Image resolution, Evolutionary algorithms, Machine vision, Computer vision technology

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Proceedings Article | 25 September 2003 Paper

Object recognition based on Gabor filter banks and feature decomposition modular neural networks

Nong Sang, Hongwei Tang, Zhiguo Cao, Tianxu Zhang

Proc. SPIE. 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition

KEYWORDS: Neural networks, Image filtering, Feature extraction, Object recognition, Pattern recognition, Spatial filters, Image processing, Digital filtering, Gaussian filters, Evolutionary algorithms

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SPIE Journal Paper | 1 April 2002

Small target pre-detection with an attention mechanism

Yuehuan Wang, Tianxu Zhang, Guoyou Wang

OE Vol. 41 Issue 04

KEYWORDS: Detection and tracking algorithms, Image analysis, Performance modeling, Image enhancement, Digital signal processing, Visual process modeling, Gaussian filters, Optical engineering, Target detection, Signal to noise ratio

Proceedings Article | 22 October 2001 Paper

Knowledge-based recognition algorithm for long-range infrared bridge images

Zhiguo Cao, Qi Sun, Tianxu Zhang

Proc. SPIE. 4379, Automatic Target Recognition XI

KEYWORDS: Bridges, Detection and tracking algorithms, Infrared imaging, Image segmentation, Infrared radiation, Long wavelength infrared, Evolutionary algorithms, Image processing algorithms and systems, Algorithm development, Feature extraction

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Proceedings Article | 22 October 2001 Paper

Ship detection with an attention mechanism applied

Yuehuan Wang, Tianxu Zhang, Guoyou Wang

Proc. SPIE. 4379, Automatic Target Recognition XI

KEYWORDS: Lithium, Photovoltaics, Infrared detectors, Infrared imaging, Infrared radiation, Automatic target recognition, Quantum wells, Image analysis, Data modeling, Target detection

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Proceedings Article | 26 September 2001 Paper

Dynamic segment designating lossless coding for sparse binary patterns

Xiaofeng Tong, Tianxu Zhang

Proc. SPIE. 4551, Image Compression and Encryption Technologies

KEYWORDS: Binary data, Image segmentation, Image compression, Computer programming, Head, Pattern recognition, Artificial intelligence, Image processing, Process control, Image storage

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A dynamic segment designate lossless coding (DSDC for short) method for sparse binary patterns is proposed in this paper. First of all, in order to reduce the correlation of the binary image, we carry out peculiar difference in row and column on the white/black (0/1) binary image successively, the resultant image is also binary, but commonly it is sparser than before, that is to say, the proportion of non-zero element will decrease. Afterwards we join rows of the simpler image by linking their heads and tails correspondingly into a long one-dimensional array. Scan the one-dimensional array from left to right step by step and divide the array into a number of non-all-zero segments (1 and 0 included) of fixed length and all-zero segments (only 0 included) of varying length according to a certain rule. In the algorithm, we always encode a subsection as often as we divide it from the one-dimensional array. After that, perform distinct coding method for the two kinds of segments of non-all-zero segments and all-zero segments respectively. For non-all-zero segment, we encode each non-all-zero element with its segment-relative address code and skip over the zero elements in each segment. As for all-zero segment, we designate the length of the all-zero segment with bin tree code, which represents the number of contiguous zero element contained in it. The Decoding method is the backward process of coding. Read out the bit stream from the code file and reconstruct the segment by using the corresponding method every time. Finally, if differential operation is carried out at the course of encoding, perform reverse difference on the current binary image and we will reconstruct the original binary image. The whole process is lossless. The encoding process and the decoding process are nearly balance in computational time or in computational complexity. In this paper, the eight binary images CCITT 1-8 have been tested by some methods mentioned in this paper. It has been demonstrated by the experimental result that the dynamic segment designate coding method is efficient for encoding sparse binary patterns.

Proceedings Article | 26 September 2001 Paper

Fractal-coding-like lossless binary image compressing method

Tianxu Zhang, Xiaofeng Tong, Zhen Zuo, Ying Li

Proc. SPIE. 4551, Image Compression and Encryption Technologies

KEYWORDS: Image compression, Fractal analysis, Image segmentation, Binary data, Image processing, Computer programming, Image restoration, Pattern recognition, Artificial intelligence, Process control

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Proceedings Article | 25 September 2001 Paper

Method for speckle intelligent filtering of SAR images based on rough sets theory

Xinsai Wang, Tianxu Zhang, Weidong Yang

Proc. SPIE. 4548, Multispectral and Hyperspectral Image Acquisition and Processing

KEYWORDS: Image filtering, Speckle, Synthetic aperture radar, Image processing, Digital filtering, Copper, Image quality, Feature extraction, Data processing, Statistical analysis

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Proceedings Article | 25 September 2001 Paper

Real-time realization of infrared ship detection with an attention mechanism

Nanzhi Zeng, Yuehuan Wang, Tianxu Zhang

Proc. SPIE. 4548, Multispectral and Hyperspectral Image Acquisition and Processing

KEYWORDS: Digital signal processing, Infrared detectors, Detection and tracking algorithms, Target detection, Telecommunications, Infrared imaging, Computing systems, Image segmentation, Infrared radiation, Image processing algorithms and systems

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Proceedings Article | 25 September 2001 Paper

Generative technique for dynamic infrared image sequences

Qian Zhang, Zhiguo Cao, Tianxu Zhang

Proc. SPIE. 4553, Visualization and Optimization Techniques

KEYWORDS: Infrared imaging, Infrared radiation, Infrared sensors, Sensors, Atmospheric sensing, Target detection, Solar radiation, Atmospheric modeling, Image sensors, Environmental sensing

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Proceedings Article | 24 September 2001 Paper

Confidence analysis of target recognition

Zhengrong Zuo, Tianxu Zhang

Proc. SPIE. 4554, Object Detection, Classification, and Tracking Technologies

KEYWORDS: Image segmentation, Target recognition, Statistical analysis, Error analysis, Stochastic processes, Automatic target recognition, Image processing, Model-based design, Image quality, Distance measurement

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Proceedings Article | 21 September 2001 Paper

Task-guided segmentation and its application in real-time IR ship recognition

Yuehuan Wang, Nanzhi Zeng, Tianxu Zhang

Proc. SPIE. 4550, Image Extraction, Segmentation, and Recognition

KEYWORDS: Image segmentation, Infrared imaging, Image processing, Data modeling, Statistical modeling, Image analysis, Target detection, Detection and tracking algorithms, Infrared radiation, Target recognition

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Proceedings Article | 21 September 2001 Paper

Novel intelligent multi-agent image segmentation method with confidence estimate

Tianxu Zhang, Fei Wu

Proc. SPIE. 4550, Image Extraction, Segmentation, and Recognition

KEYWORDS: Image segmentation, Image processing, Image processing algorithms and systems, Detection and tracking algorithms, Feature extraction, Artificial intelligence, Image analysis, Binary data, Data processing, Evolutionary algorithms

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Proceedings Article | 21 September 2001 Paper

Feature analysis: support vector machine approaches

Yan Shi, Tianxu Zhang

Proc. SPIE. 4550, Image Extraction, Segmentation, and Recognition

KEYWORDS: Feature selection, Feature extraction, IRIS Consortium, Pattern recognition, Virtual colonoscopy, Error analysis, Image segmentation, Fuzzy logic, Artificial intelligence, Image processing

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Proceedings Article | 21 September 2001 Paper

Automatic threshold estimation for gradient image segmentation

Tianxu Zhang, Xinsai Wang, Yuehuan Wang

Proc. SPIE. 4550, Image Extraction, Segmentation, and Recognition

KEYWORDS: Image segmentation, Image analysis, Image processing, Pattern recognition, Artificial intelligence, Process control, Error analysis, Infrared imaging, Machine vision, Computer vision technology

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Proceedings Article | 20 September 2001 Paper

Adaptive image matching based on wavelet multiscale representation

Tianxu Zhang, Huilin Xiong

Proc. SPIE. 4552, Image Matching and Analysis

KEYWORDS: Wavelets, Wavelet transforms, Image processing, Discrete wavelet transforms, Multiscale representation, Image filtering, Linear filtering, Digital imaging, Pattern recognition, Artificial intelligence

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Proceedings Article | 20 September 2001 Paper

Contour tracing and tree structure of multivalue segmented image

Fei Wu, Tianxu Zhang

Proc. SPIE. 4552, Image Matching and Analysis

KEYWORDS: Image segmentation, Image processing algorithms and systems, Image analysis, Image processing, Algorithms, Error analysis, Digital imaging, Binary data, Picosecond phenomena, Detection and tracking algorithms

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Proceedings Article | 20 September 2001 Paper

Modularized multi-DSP real-time image processing system

Yuehuan Wang, Tianxu Zhang, Luxin Yan

Proc. SPIE. 4552, Image Matching and Analysis

KEYWORDS: Digital signal processing, Telecommunications, Video, Control systems, Real time image processing, Data communications, Image processing, Computing systems, Multiplexers, Video processing

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Proceedings Article | 20 September 2001 Paper

Implementation of AHB interface in a communication-specific CPU based on ARM core

Xianyang Jiang, Hu Chen, Xubang Shen, Tianxu Zhang

Proc. SPIE. 4555, Neural Network and Distributed Processing

KEYWORDS: Neural networks

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Proceedings Article | 20 September 2001 Paper

Design of a parallel RISC image processor based on PCI bus

Xianyang Jiang, Xubang Shen, Tianxu Zhang

Proc. SPIE. 4555, Neural Network and Distributed Processing

KEYWORDS: Image processing, Telecommunications, Neural networks

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Proceedings Article | 20 September 2001 Paper

Frequency analysis of intensity-based correlation for different sensors scene

Sheng Zhong, Tianxu Zhang, Nong Sang

Proc. SPIE. 4552, Image Matching and Analysis

KEYWORDS: Image sensors, Sensors, Convolution, Filtering (signal processing), Image processing, Image resolution, Image enhancement, Digital signal processing, Edge detection, Image filtering

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Proceedings Article | 20 September 2001 Paper

Matching between SLAR and SAR images based on vertical projection adjust

Weidong Yang, Tianxu Zhang, Xinsai Wang

Proc. SPIE. 4552, Image Matching and Analysis

KEYWORDS: Radar, Radar imaging, Synthetic aperture radar, Distortion, Image analysis, Computer simulations, Image resolution, Microwave radiation, Reflection, Image processing

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Proceedings Article | 9 May 2000 Paper

Uncooled infrared focal plane detector for temperature measurement

Yaping Wu, Tianxu Zhang

Proc. SPIE. 4077, International Conference on Sensors and Control Techniques (ICSC 2000)

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Proceedings Article | 18 October 1999 Paper

Feature-coding-based algorithm for high-fidelity image compression

Tianxu Zhang, Kai Lin, Zhen Zuo, Yiu Moon

Proc. SPIE. 3808, Applications of Digital Image Processing XXII

KEYWORDS: Image compression, Image restoration, Computer programming, Satellite imaging, Satellites, Wavelets, Earth observing sensors, Reconstruction algorithms, Image quality, Wavelet transforms

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Proceedings Article | 18 October 1999 Paper

Stability of co-occurence matrix-based image segmentation

Tianxu Zhang, Boyong Zhong, Zhen Zuo, Kai Lin, Xiaobing Cao

Proc. SPIE. 3808, Applications of Digital Image Processing XXII

KEYWORDS: Image segmentation, Image processing algorithms and systems, Stochastic processes, Silicon, Evolutionary algorithms, Algorithm development, Human vision and color perception, Infrared imaging, Infrared radiation, Machine vision

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Proceedings Article | 24 August 1999 Paper

Multiresolution texture feature extraction and recognition based on translation- and scale-invariant adaptive wavelet transform

Huilin Xiong, Tianxu Zhang

Proc. SPIE. 3718, Automatic Target Recognition IX

KEYWORDS: Wavelets, Wavelet transforms, Transform theory, Image processing, Feature extraction, Pattern recognition, Discrete wavelet transforms, Algorithm development, Image classification, Detection theory

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Proceedings Article | 13 August 1999 Paper

Spaceborne SAR imaging by exact compensation of the attitude errors

Zhiyong Zhang, Zhiguo Cao, Tianxu Zhang

Proc. SPIE. 3721, Algorithms for Synthetic Aperture Radar Imagery VI

KEYWORDS: Synthetic aperture radar, Error analysis, Doppler effect, Satellites, Sensors, Radar, Statistical analysis, Image processing, Image quality, Autoregressive models

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Proceedings Article | 26 July 1999 Paper

Digital implementation of nonuniformity correction for IRFPAs

Zhiguo Cao, Nong Sang, Wei Li, Yuehuan Wang, Guoyou Wang, Tianxu Zhang

Proc. SPIE. 3698, Infrared Technology and Applications XXV

KEYWORDS: Nonuniformity corrections, Digital signal processing, Signal processing, Evolutionary algorithms, Control systems, Sensors, Image processing, Neural networks, Staring arrays, Digital image processing

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Proceedings Article | 23 July 1999 Paper

Simulation platform on scene matching

Zhiguo Cao, Hongbin Huang, Nong Sang, Guoyou Wang, Tianxu Zhang

Proc. SPIE. 3694, Modeling, Simulation, and Visualization for Real and Virtual Environments

KEYWORDS: Computer simulations, Scene simulation, Image processing, Error analysis, Algorithm development, Distortion, Image registration, Signal to noise ratio, Sensors, Cameras

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Proceedings Article | 25 September 1998 Paper

Stable multiresolution feature extraction using translation- and scale-invariant adaptive wavelet transform

Huilin Xiong, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Wavelets, Wavelet transforms, Feature extraction, Discrete wavelet transforms, Image processing, Image classification, Signal processing, Detection theory, Algorithm development, Algorithms

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Proceedings Article | 25 September 1998 Paper

Simulation and analysis of rain clutter for PRC_cw radar at x-band

Zhiyong Zhang, Zhiguo Cao, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Radar, Superposition, Statistical analysis, X band, Autoregressive models, Computer simulations, Target detection, Americium, Argon, Signal attenuation

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Proceedings Article | 25 September 1998 Paper

Segmentation of FLIR images by target enhancement and image model

Nong Sang, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Image processing, Optical filters, Evolutionary algorithms, Image enhancement, Image filtering, Digital filtering, Image processing algorithms and systems, Forward looking infrared, Detection and tracking algorithms, Image segmentation

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Proceedings Article | 25 September 1998 Paper

Spatial correlation characteristic analysis of land clutter for PRC_cw radar at x-band

Zhiguo Cao, Zhiyong Zhang, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Radar, Target detection, X band, Backscatter, Correlation function, Computer simulations, Superposition, Reflection, Aluminum, Pattern recognition

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Proceedings Article | 25 September 1998 Paper

Detection of sea-surface small targets in infrared images based on multilevel filters

Zhen Zuo, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Target detection, Image filtering, Infrared imaging, Infrared radiation, Infrared detectors, Optical filters, Detection and tracking algorithms, Linear filtering, Target recognition, Pattern recognition

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Proceedings Article | 25 September 1998 Paper

Mathematical framework of image synthesis for all-weather outdoor scenes

Ziqin Sang, Mingyue Ding, Tianxu Zhang

Proc. SPIE. 3545, International Symposium on Multispectral Image Processing (ISMIP'98)

KEYWORDS: Earth's atmosphere, Light sources, Solar energy, Bidirectional reflectance transmission function, Sun, Solar radiation, Cameras, Light sources and illumination, Receptors, Reflectivity

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Proceedings Article | 3 September 1998 Paper

Characteristics of contrast and application for small-target detection

Nong Sang, Tianxu Zhang, Weiqiang Shi

Proc. SPIE. 3373, Signal and Data Processing of Small Targets 1998

KEYWORDS: Sensors, Infrared imaging, Infrared radiation, Image enhancement, Statistical analysis, Image processing, Image filtering, Target acquisition, Digital filtering, Target detection

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Proceedings Article | 8 July 1998 Paper

Adaptive wavelet transform possessing the properties of translation and scale invariance

Huilin Xiong, Tianxu Zhang

Proc. SPIE. 3389, Hybrid Image and Signal Processing VI

KEYWORDS: Wavelets, Wavelet transforms, Signal processing, Filtering (signal processing), Reconstruction algorithms, Image processing, Digital imaging, Electronic filtering, Wavelet packet decomposition, Convolution

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Proceedings Article | 6 July 1998 Paper

Robust point pattern relaxation matching with missing or spurious points and random errors

Nong Sang, Sheng Zhong, Tianxu Zhang

Proc. SPIE. 3387, Visual Information Processing VII

KEYWORDS: Error analysis, Feature extraction, Factor analysis, Information visualization, Lithium, Pattern recognition, Artificial intelligence, Image processing, Process control, Image registration

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Proceedings Article | 1 March 1998 Paper

New approach to navigation: matching sequential images to 3D terrain maps

Tianxu Zhang, Bo Hu, Wei Li

Proc. SPIE. 3240, 26th AIPR Workshop: Exploiting New Image Sources and Sensors

KEYWORDS: 3D image processing, Image restoration, Distance measurement

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Proceedings Article | 22 December 1997 Paper

Detection of image fractal signature

Jun Shen, Jie Li, Tianxu Zhang

Proc. SPIE. 3217, Image Processing, Signal Processing, and Synthetic Aperture Radar for Remote Sensing

KEYWORDS: Fractal analysis, Image analysis, Feature extraction, Image segmentation

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SPIE Journal Paper | 1 December 1997

Rotation and scale change invariant point pattern relaxation matching by the Hopfield neural network

Nong Sang, Tianxu Zhang

OE Vol. 36 Issue 12

KEYWORDS: Neural networks, Neurons, Optical engineering, Image processing, Parallel computing, Data processing, Computer simulations, Image segmentation, Process modeling, Computing systems

Proceedings Article | 22 July 1997 Paper

Point pattern relaxation matching: invariant to rotations and scale changes

Nong Sang, Tianxu Zhang

Proc. SPIE. 3074, Visual Information Processing VI

KEYWORDS: Neural networks, Image processing, Data processing, Image segmentation, Evolutionary algorithms, Parallel computing, Promethium, Pattern recognition, Artificial intelligence, Process control

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Proceedings Article | 20 June 1997 Paper

Approach to target detection based on scale changing fractal signature

Guoyou Wang, Jie Li, Fenghua Dong, Tianxu Zhang

Proc. SPIE. 3062, Targets and Backgrounds: Characterization and Representation III

KEYWORDS: Environmental sensing, Infrared detectors, Infrared cameras, Infrared radiation, Infrared imaging, Image segmentation, Detection and tracking algorithms, Infrared signatures, Target detection, Fractal analysis

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Proceedings Article | 17 June 1996 Paper

Class of methods for representation and recognition of multiscale objects

Guoyou Wang, Wei Li, Tianxu Zhang, Jiaxiong Peng

Proc. SPIE. 2742, Targets and Backgrounds: Characterization and Representation II

KEYWORDS: Image sensors, Object recognition, Sensors, Detection and tracking algorithms, Image resolution, Visualization, Infrared imaging, Infrared radiation, Algorithm development, Cameras

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Proceedings Article | 31 May 1996 Paper

Gray-scale morphology for small object detection

Nong Sang, Tianxu Zhang, Guoyou Wang

Proc. SPIE. 2759, Signal and Data Processing of Small Targets 1996

KEYWORDS: Digital filtering, Image filtering, Binary data, Detection and tracking algorithms, Nonlinear filtering, Boron, Electronic filtering, Mathematical morphology, Image segmentation, Image enhancement

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Proceedings Article | 27 May 1996 Paper

Fast and effective algorithm for radar-to-optical scene matching based on the knowledge of object region

Nong Sang, Tianxu Zhang, Wei Li, Guoyou Wang

Proc. SPIE. 2738, Navigation and Control Technologies for Unmanned Systems

KEYWORDS: Radar, Image segmentation, Radar imaging, Image processing, Sensors, Visualization, Evolutionary algorithms, Head, Feature extraction, Detection and tracking algorithms

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Proceedings Article | 4 March 1996 Paper

Relaxation matching by the Hopfield neural network

Nong Sang, Tianxu Zhang, Luogang Wei, Guoyou Wang

Proc. SPIE. 2664, Applications of Artificial Neural Networks in Image Processing

KEYWORDS: Neural networks, Neurons, Parallel computing, Data processing, Computer simulations, Process modeling, Promethium, Image processing, Artificial intelligence, Image registration

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SPIE Journal Paper | 1 March 1996

Efficient method for multiscale small target detection from a natural scene

Guoyou Wang, Tianxu Zhang, Luogang Wei, Nong Sang

OE Vol. 35 Issue 03

KEYWORDS: Target detection, Signal to noise ratio, Optical engineering, Detection and tracking algorithms, 3D acquisition, 3D image processing, Fractal analysis, Signal detection, 3D displays, Object recognition

Proceedings Article | 3 October 1995 Paper

Texture segmentation using visual nonlinearity

Xianming Xie, Nong Sang, Tianxu Zhang, Guoyou Wang

Proc. SPIE. 2597, Machine Vision Applications, Architectures, and Systems Integration IV

KEYWORDS: Image segmentation, Visualization, Image processing algorithms and systems, Curium, Ranging, Psychophysiology, Image processing, Pattern recognition, Artificial intelligence, Evolutionary algorithms

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Proceedings Article | 5 July 1995 Paper

Efficient small-target detection algorithm

Guoyou Wang, Tianxu Zhang, Luogang Wei, Nong Sang

Proc. SPIE. 2484, Signal Processing, Sensor Fusion, and Target Recognition IV

KEYWORDS: Detection and tracking algorithms, Target detection, Signal to noise ratio, Algorithm development, Visualization, Radon, Fractal analysis, Object recognition, Target recognition, Visual analytics

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