Junghyeun HWANG


Reversible Implementations of Irreversible Component Transforms and Their Comparisons in Image Compression
Junghyeun HWANG Hisakazu KIKUCHI Shogo MURAMATSU Kazuma SHINODA Jaeho SHIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/04/01
Vol. E95-A  No. 4  pp. 824-828
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
component transformreversible transformimage compressionLU factorization
 Summary | Full Text:PDF(130.9KB)

An Optimum Design of Error Diffusion Filters Using the Blue Noise in All Graylevels
Junghyeun HWANG Hisakazu KIKUCHI Shogo MURAMATSU Jaeho SHIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/08/01
Vol. E93-A  No. 8  pp. 1465-1475
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
digital halftoningerror diffusionblue noisepower spectrumbinary pattern power spectrum matching
 Summary | Full Text:PDF(2MB)