Prof. Kiyoharu Aizawa Profile

Prof. Kiyoharu Aizawa

at Univ of Tokyo

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 19 January 2006 Paper

Robust global motion estimation in video stabilization for reducing visually induced motion sickness

Ikuko Tsubaki, Toshiya Morita, Kiyoharu Aizawa, Takahiro Saito

Proceedings Volume 6077, 60771X (2006) https://doi.org/10.1117/12.643259

KEYWORDS: Motion estimation, Video, Motion models, Cameras, Data modeling, Visualization, Video processing, Motion detection, Image processing, Reliability

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Proceedings Article | 16 January 2006 Paper

Practical life log video indexing based on content and context

Datchakorn Tancharoen, Toshihiko Yamasaki, Kiyoharu Aizawa

Proceedings Volume 6073, 60730E (2006) https://doi.org/10.1117/12.650342

KEYWORDS: Video, Sensors, Global Positioning System, Skin, Visualization, Heat flux, Cameras, Temperature metrology, Semantic video, Visual analytics

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Proceedings Article | 7 June 2004 Paper

A restoration and demosaicking method for a pixel mixture image

Ikuko Tsubaki, Kiyoharu Aizawa

Proceedings Volume 5301, (2004) https://doi.org/10.1117/12.526378

KEYWORDS: Iterative methods, Charge-coupled devices, Image restoration, Video, Image processing, Moire patterns, Optical filters, Atrial fibrillation, Image filtering, Linear filtering

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Proceedings Article | 18 December 2003 Paper

Home video summarization by shot characteristics and user's feedback

Nagul Cooharojananone, Supatana Auethavekiat, Kiyoharu Aizawa

Proceedings Volume 5307, (2003) https://doi.org/10.1117/12.526556

KEYWORDS: Video, Nanoimprint lithography, Detection and tracking algorithms, Electrical engineering, Information science, Cameras, Edge detection, Sensors, Data storage, Multimedia

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Proceedings Article | 18 December 2003 Paper

Layered indexing of home video based on audio signals

Tomomi Ogawa, Kiyoharu Aizawa

Proceedings Volume 5307, (2003) https://doi.org/10.1117/12.526632

KEYWORDS: Video, Feature extraction, Video processing, Smoothing, Signal detection, Distance measurement, Solar thermal energy, Statistical modeling, Data modeling, Multimedia

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Proceedings Article | 23 June 2003 Paper

Object-based approach to image-based rendering with linear filters using defocus information

Akira Kubota, Kiyoharu Aizawa

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503341

KEYWORDS: Linear filtering, Cameras, Image segmentation, Electrical engineering, Visual communications, Image processing

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Proceedings Article | 23 June 2003 Paper

Three-dimensional image representation of buildings utilizing heterogeneous information for multimedia ambiance communication

Minako Toba, Takahiro Saito, Kiyoharu Aizawa, Kenji Mochizuki, Takeshi Naemura, Hiroshi Harashima

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503321

KEYWORDS: Buildings, Data acquisition, 3D image processing, 3D acquisition, 3D modeling, Multimedia, Scanners, Data modeling, 3D scanning, Photography

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Proceedings Article | 23 May 2002 Paper

Virtual view generation of natural panorama scenes by setting representation

Kunio Yamada, Kenji Mochizuki, Takeshi Naemura, Kiyoharu Aizawa, Takahiro Saito

Proceedings Volume 4660, (2002) https://doi.org/10.1117/12.468043

KEYWORDS: Panoramic photography, Image segmentation, Cameras, Head, Imaging systems, Image registration, Image processing algorithms and systems, Image processing, Telecommunications, Multimedia

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Proceedings Article | 1 August 2001 Paper

Universal watermark estimation scheme based on error probabilities

Yoonki Choi, Kiyoharu Aizawa

Proceedings Volume 4314, (2001) https://doi.org/10.1117/12.435449

KEYWORDS: Digital watermarking, Error analysis, Image compression, Feature extraction, Image quality, Statistical methods, Image processing, Communication engineering, Data communications, Eye

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Proceedings Article | 22 June 2001 Paper

Three-dimensional image capturing and representation for multimedia ambiance communication

Tadashi Ichikawa, Shoichiro Iwasawa, Kunio Yamada, Toshifumi Kanamaru, Takeshi Naemura, Kiyoharu Aizawa, Shigeo Morishima, Takahiro Saito

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430810

KEYWORDS: 3D image processing, 3D modeling, Motion models, Multimedia, Image quality, Image processing, Scanners, Stereoscopic displays, Panoramic photography, Human subjects

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Proceedings Article | 1 January 2001 Paper

Nagul Cooharojananone, Kiyoharu Aizawa

Proceedings Volume 4315, (2001) https://doi.org/10.1117/12.410928

KEYWORDS: Distance measurement, RGB color model, Image retrieval, Databases, Light sources and illumination, Visualization, Electrical engineering, Content based image retrieval, Feature extraction, Data storage

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Proceedings Article | 29 December 2000 Paper

Structure analysis of natural scenes using census transform and region competition

Kunio Yamada, Tadashi Ichikawa, Takeshi Naemura, Kiyoharu Aizawa, Takahiro Saito

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411800

KEYWORDS: Panoramic photography, Image segmentation, Image processing, Volume rendering, 3D image processing, Image processing algorithms and systems, Photonic integrated circuits, Telecommunications, Laser scanners, 3D image reconstruction

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Proceedings Article | 30 May 2000 Paper

High-quality stereo panorama generation using a three-camera system

Kunio Yamada, Tadashi Ichikawa, Takeshi Naemura, Kiyoharu Aizawa, Takahiro Saito

Proceedings Volume 4067, (2000) https://doi.org/10.1117/12.386660

KEYWORDS: Panoramic photography, Cameras, Distortion, Telecommunications, Image registration, Image enhancement, Image processing, Head, Imaging systems, Image filtering

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Proceedings Article | 30 May 2000 Paper

Inverse filters for generation of arbitrarily focused images

Akira Kubota, Kiyoharu Aizawa

Proceedings Volume 4067, (2000) https://doi.org/10.1117/12.386627

KEYWORDS: Image fusion, Electronic filtering, Image restoration, Fourier transforms, Image filtering, Linear filtering, Rubidium, Image segmentation, Radium, Reconstruction algorithms

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Proceedings Article | 3 May 2000 Paper

Multimedia ambience communication based on actual moving pictures in a steroscopic projection display environment

Kunio Yamada, Tadashi Ichikawa, Takeshi Naemura, Kiyoharu Aizawa, Shigeo Morishima, Takahiro Saito

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384456

KEYWORDS: Panoramic photography, Telecommunications, Image enhancement, Cameras, Multimedia, Image quality, Head, Imaging systems, Image filtering, Image registration

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Proceedings Article | 16 March 2000 Paper

Acquisition of 3D image representation in multimedia ambiance communication using 3D laser scanner and digital camera

Toshifumi Kanamaru, Kunio Yamada, Tadashi Ichikawa, Takeshi Naemura, Kiyoharu Aizawa, Takahiro Saito

Proceedings Volume 3958, (2000) https://doi.org/10.1117/12.380029

KEYWORDS: 3D image processing, 3D acquisition, Laser scanners, Digital cameras, 3D scanning, Multimedia, Digital imaging, 3D metrology, Image acquisition, Data acquisition

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Proceedings Article | 27 April 1999 Paper

Design and implementation of a smart image sensor with 2D motion vector estimation

Zheng Li, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3649, (1999) https://doi.org/10.1117/12.347072

KEYWORDS: Sensors, Motion estimation, Edge detection, Image sensors, Multiplexing, Motion detection, Lithium, Ions, Image processing, Logic

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Proceedings Article | 28 December 1998 Paper

Capturing wide-view images with uncalibrated cameras

Vincent van de Laar, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334640

KEYWORDS: Cameras, Error analysis, Motion estimation, Panoramic photography, Communication engineering, Image analysis, Image acquisition, Imaging systems, Distortion, Matrices

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Proceedings Article | 28 December 1998 Paper

Novel compressed image improving technique by blending a reference image

Supatana Auethavekiat, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334636

KEYWORDS: Image compression, Image processing, Image quality, Signal to noise ratio, Image transmission, Cameras, Tolerancing, Chromium, Motion measurement, Communication engineering

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Proceedings Article | 28 December 1998 Paper

Use of multiple visual features for object tracking

Ajith Pasqual, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334747

KEYWORDS: Visualization, Optical tracking, Optical flow, Detection and tracking algorithms, Cameras, Astatine, RGB color model, Automatic tracking, Image processing, Copper

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Proceedings Article | 7 September 1998 Paper

Motion vector estimation on focal sensor plane by block matching

Zheng Li, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3410, (1998) https://doi.org/10.1117/12.324002

KEYWORDS: Edge detection, Motion estimation, Sensors, Multiplexing, Logic, CMOS sensors, Prototyping, Parallel processing, Digital signal processing, Motion detection

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Proceedings Article | 7 September 1998 Paper

Focal plane compression 128x128 image sensor based on column parallel architecture

Takayuki Hamamoto, Yasuhiro Ohtsuka, Kiyoharu Aizawa

Proceedings Volume 3410, (1998) https://doi.org/10.1117/12.324001

KEYWORDS: Sensors, Image compression, Prototyping, Image sensors, Image enhancement, Image processing, Signal processing, Real time imaging, Imaging systems, Transducers

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SPIE Journal Paper | 1 January 1998

Generation of arbitrarily focused images by using multiple differently focused images

Kazuya Kodama, Kiyoharu Aizawa, Mitsutoshi Hatori

JEI, Vol. 7, Issue 01, (January 1998) https://doi.org/10.1117/12.10.1117/1.482635

KEYWORDS: Point spread functions, Image segmentation, Cameras, Image fusion, Image acquisition, Device simulation, Image analysis, Electrical engineering, Visual communications, Image processing

Proceedings Article | 10 January 1997 Paper

Generation of arbitrarily focused images by using multiple differently focused images

Kazuya Kodama, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 3024, (1997) https://doi.org/10.1117/12.263210

KEYWORDS: Point spread functions, Cameras, Image segmentation, Image fusion, Image acquisition, Error analysis, Radium, Rubidium, Device simulation, Image analysis

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Proceedings Article | 19 December 1996 Paper

Focal plane compression sensors

Kiyoharu Aizawa, Y. Egi, Takayuki Hamamoto, A. Motoki, Mitsutoshi Hatori, Hirotaka Maruyama, J. Yamazaki

Proceedings Volume 2950, (1996) https://doi.org/10.1117/12.262520

KEYWORDS: Sensors, Image compression, Image sensors, Signal processing, Prototyping, Image processing, Transducers, Image enhancement, Signal detection, Computer architecture

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Proceedings Article | 19 December 1996 Paper

Motion-adaptive image sensor for enhancement and wide dynamic range

Takayuki Hamamoto, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 2950, (1996) https://doi.org/10.1117/12.262518

KEYWORDS: Sensors, Image sensors, Image enhancement, Image processing, Temporal resolution, CCD image sensors, Image quality, Image storage, Signal to noise ratio, Computer simulations

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Proceedings Article | 27 February 1996 Paper

Structural motion segmentation for compact image sequence representation

Cha Cheong, Kiyoharu Aizawa, Takahiro Saito, Masahide Kaneko, Hiroshi Harashima

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233187

KEYWORDS: Image segmentation, Motion estimation, Motion models, Optical flow, Image compression, Image processing algorithms and systems, Edge detection, Wavelets, Affine motion model, Image retrieval

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Proceedings Article | 16 February 1996 Paper

Sensor image compression for very high pixel-rate imaging and processing

Kiyoharu Aizawa, Y. Egi, Takayuki Hamamoto, Mitsutoshi Hatori, Hirotaka Maruyama, J. Yamazaki

Proceedings Volume 2663, (1996) https://doi.org/10.1117/12.233046

KEYWORDS: Sensors, Image compression, Image sensors, Image processing, Prototyping, Signal processing, CMOS sensors, Analog electronics, Signal to noise ratio, Very large scale integration

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Proceedings Article | 21 April 1995 Paper

Detection and tracking of facial features

Liyanage De Silva, Kiyoharu Aizawa, Mitsutoshi Hatori

Proceedings Volume 2501, (1995) https://doi.org/10.1117/12.206649

KEYWORDS: Eye, Iris recognition, Head, Facial recognition systems, Detection and tracking algorithms, Edge detection, Mouth, Image processing, Databases, Nose

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Proceedings Article | 16 September 1994 Paper

Model-based image coding

Kiyoharu Aizawa

Proceedings Volume 2308, (1994) https://doi.org/10.1117/12.185864

KEYWORDS: 3D modeling, Motion models, Image compression, Model-based design, 3D image processing, Data modeling, Image analysis, Motion estimation, Systems modeling, Solid modeling

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Historically. progress in image coding tecliniqnes has been made by incorporating resnits from other fields SUCh as information theory. Most of the existing coding methods such as predictive coding. transform coding, and vector quantization belong to information-theory-based methods in which image signals are considered as ranidoni signals aiid compressed by exploiting their stochastic properties. Apart from these iiiformation-tlieoretic coding iniethods, research on new approaches such as modelbased coding (which is related to 1)0th image analysis and computer graphics) has recently intensified. An essential difference between conventional coding methods and these new approaches is the image model they assume. Contrary to conventional coding methods which efficiently represent 2-D waveforms of image signals model-based co ding represent iniage signals using structural image models which take into accomit the 3-D properties of the scene in some sense. There have been two major approaches to model-based image coding. One approach uses general niodels such as planar patches and sniooth surfaces to represent the 3-D properties of the oI)jects [11, 19, 28. 31, 33. 36, 39. 40, 43]. The other approach utilizes detailed 1)arameterized 3-D object models such as a parameterized facial model [2. 6, 13. 15. 17, 22. 24. 2G. 32, 35. 41. 47, 48. 49. 51. 54]. TIne former approach has been discussed in the context of advanced motion compensation. The latter approach is clearly different from the conventional approaches. since it uses an explicit 3—D model and encodes images with coniputer—vision— Oiieiite(il tecliniques an(I 1eJ)1()(luces iniages with colnj)uter—grapllics—oriented techniques . Both approaches will potentially achieves very low l)it rate video compression. Iii the following sectionis. unage co(ling schemes are described froni the point of view of their associated image IIli)delS. Amoiig our works related to these paradignins in the Univ. of Tokyo [2. 3, 4. 8, 9, 10, 36, 41 42. 40]. 3-D model-based coding and 2-D deforniable triangle based niotion compensation are described.

Proceedings Article | 1 November 1991 Paper

Acquisition of very high resolution images using stereo cameras

Kiyoharu Aizawa, Takashi Komatsu, Takahiro Saito

Proceedings Volume 1605, (1991) https://doi.org/10.1117/12.50221

KEYWORDS: Visual communications, Image resolution, Image processing, Imaging systems, Ions, Visualization, Stereoscopic cameras, Signal to noise ratio, Signal processing, Image visualization

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Proceedings Article | 1 November 1991 Paper

Human facial motion modeling, analysis, and synthesis for video compression

Thomas Huang, Subhash Reddy, Kiyoharu Aizawa

Proceedings Volume 1605, (1991) https://doi.org/10.1117/12.50243

KEYWORDS: 3D modeling, Model-based design, Control systems, Motion models, Image compression, 3D image processing, Visual communications, Motion analysis, Systems modeling, Image processing

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Proceedings Article | 1 September 1990 Paper

Real-time facial action image synthesis system driven by speech and text

Shigeo Morishima, Kiyoharu Aizawa, Hiroshi Harashima

Proceedings Volume 1360, (1990) https://doi.org/10.1117/12.24130

KEYWORDS: 3D modeling, Mouth, Image compression, Image processing, 3D image processing, Motion models, Volume rendering, Laser induced plasma spectroscopy, Telecommunications, Human-machine interfaces

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