Prof. Karen O. Egiazarian
at Tampere Univ
SPIE Involvement:
Board of Editors | Editor-in-Chief: Journal of Electronic Imaging | Author | Editor | Instructor
Publications (123)

Proceedings Article | 2 March 2020
Proc. SPIE. 11279, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
KEYWORDS: Terahertz radiation, Denoising, Holography, Wavefronts, Algorithm development, Signal to noise ratio, Principal component analysis, Image filtering, Optical filters, Numerical simulations

Proceedings Article | 21 June 2019
Proc. SPIE. 11062, Digital Optical Technologies 2019
KEYWORDS: Phase retrieval, Phase imaging, Optical systems, Phase measurement, Phase modulation, Wavefronts, Super resolution, Wave propagation, Image resolution, Diffraction, Reconstruction algorithms

Proceedings Article | 17 October 2018
Proc. SPIE. 10802, Counterterrorism, Crime Fighting, Forensics, and Surveillance Technologies II
KEYWORDS: Video, 3D image processing, Video surveillance, Fourier transforms, Detection and tracking algorithms, Feature extraction

SPIE Journal Paper | 26 August 2018
OE Vol. 57 Issue 08
KEYWORDS: Reconstruction algorithms, Algorithm development, Phase retrieval, Signal to noise ratio, Diffraction, Phase shift keying, Wavefronts, Sensors, RGB color model, Photons

Proceedings Article | 24 May 2018
Proc. SPIE. 10677, Unconventional Optical Imaging
KEYWORDS: Reconstruction algorithms, Phase retrieval, Signal to noise ratio, Algorithm development, Sensors, Photons, Wavefronts, Diffraction, Image processing

Showing 5 of 123 publications
Proceedings Volume Editor (14)

SPIE Conference Volume | 7 April 2015

SPIE Conference Volume | 18 March 2014

SPIE Conference Volume | 27 February 2013

SPIE Conference Volume | 3 February 2011

Showing 5 of 14 publications
Conference Committee Involvement (14)
Image Processing: Algorithms and Systems XIII
10 February 2015 | San Francisco, California, United States
Image Processing: Algorithms and Systems XII
3 February 2014 | San Francisco, California, United States
Image Processing: Algorithms and Systems XI
4 February 2013 | Burlingame, California, United States
Image Processing: Algorithms and Systems X
23 January 2012 | Burlingame, California, United States
Image Processing: Algorithms and Systems IX
24 January 2011 | San Francisco Airport, California, United States
Showing 5 of 14 Conference Committees
Course Instructor
SC761: Novel Spatially Adaptive Anisotropic Local Approximation Techniques in Image Processing
This half-day course presents a practical and application oriented overview of novel advanced image processing algorithms. Briefly the idea is as follows: the concept of adaptive local polynomial approximation (LPA) has been developed to deal with anisotropic signals. This type of method searches for a largest local star-shaped neighborhood where LPA fits well to data. It is typically applied in a point-wise manner and defines a nonlinear varying scale (window size and shape) adaptive filter. This adaptation is based on recent adaptive estimation results that have been obtained in mathematical statistics. Local versions of the local maximum/quasi likelihood are used for non-Gaussian models. Special algorithms have been designed for photon-limited imaging based on the Poisson distribution of data. Overall, the techniques covered in the course belong to the general class of nonlinear spatially adaptive filters and they demonstrate state-of-art performance and on many occasions visually and quantitatively outperform the best methods currently in use. A wide scope of imaging problems is considered: denoising Gaussian and non-Gaussian images, non-blind deblurring, blind multichannel deblurring, super-resolution imaging, denoising poissonian signals, multiresolution imaging, edge detection, color imaging, etc. The algorithms are implemented in Matlab codes and based on efficient frequency domain calculations.
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