K
Karen Egiazarian
Researcher at Tampere University of Technology
Publications - 603
Citations - 26910
Karen Egiazarian is an academic researcher from Tampere University of Technology. The author has contributed to research in topics: Image processing & Filter (signal processing). The author has an hindex of 53, co-authored 585 publications receiving 22477 citations. Previous affiliations of Karen Egiazarian include Nokia & Roma Tre University.
Papers
More filters
Proceedings ArticleDOI
Visually lossless compression of synthetic aperture radar images
TL;DR: In this article, a method based on discrete cosine transform (DCT) applied in 8×8 blocks is proposed for SAR images corrupted by speckle and its multiplicative nature.
Journal ArticleDOI
Multiwavelength surface contouring from phase-coded noisy diffraction patterns: wavelength-division optical setup
TL;DR: In this article, an algorithm for absolute phase retrieval from multi-wavelength noisy phase coded diffraction patterns is proposed, which uses the forward/backward propagation for coherent light beams and sparsely encoding wavefronts, which leads to the complex domain block-matching three-dimensional filtering.
Proceedings ArticleDOI
New algorithm for removing mixed (white and impulsive) noise from images
Karen Egiazarian,Jaakko Astola +1 more
TL;DR: A new algorithm for removing mixed noise from images based on combining an impulse removal operation with local adaptive filtering in transform-domain is proposed, which works well in de-noising images corrupted by aGaussian, Laplacian, exponential) noise impulsive noise, and their mixtures.
Journal ArticleDOI
Implementation of cascaded and recursive stack filters
TL;DR: Systematic methods are developed for simplified implementations of cascaded stack and WOS filters, and Dynamic domino logic is proposed for VLSI hardware implementation of positive Boolean functions, and a pipelined stack filter architecture is described.
Journal ArticleDOI
Power-balanced hybrid optics boosted design for achromatic extended depth-of-field imaging via optimized mixed OTF.
TL;DR: In this paper, a power-balanced hybrid optical imaging system with a diffractive lens and a multilevel phase mask (MPM) is proposed. And the authors introduce the concept of optical power balance between the lens and MPM, which controls the contribution of each element to modulate the incoming light.