Kazunori URUMA


Block Adaptive Algorithm for Signal Declipping Based on Null Space Alternating Optimization
Tomohiro TAKAHASHI Kazunori URUMA Katsumi KONISHI Toshihiro FURUKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/01/01
Vol. E98-D  No. 1  pp. 206-209
Type of Manuscript:  LETTER
Category: Speech and Hearing
Keyword: 
matrix rank minimizationsignal declippingsignal restorationblock algorithm
 Summary | Full Text:PDF(377.1KB)

Mixed lp/l1 Norm Minimization Approach to Intra-Frame Super-Resolution
Kazuma SHIMADA Katsumi KONISHI Kazunori URUMA Tomohiro TAKAHASHI Toshihiro FURUKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/10/01
Vol. E97-D  No. 10  pp. 2814-2817
Type of Manuscript:  LETTER
Category: Image Processing and Video Processing
Keyword: 
super-resolutionsparse optimization
 Summary | Full Text:PDF(1.4MB)

An Iterative Reweighted Least Squares Algorithm with Finite Series Approximation for a Sparse Signal Recovery
Kazunori URUMA Katsumi KONISHI Tomohiro TAKAHASHI Toshihiro FURUKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/02/01
Vol. E97-D  No. 2  pp. 319-322
Type of Manuscript:  LETTER
Category: Fundamentals of Information Systems
Keyword: 
compressed sensingsparse optimizationiterative reweighted least squares
 Summary | Full Text:PDF(613.7KB)

Mixed l0/l1 Norm Minimization Approach to Image Colorization
Kazunori URUMA Katsumi KONISHI Tomohiro TAKAHASHI Toshihiro FURUKAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2012/08/01
Vol. E95-D  No. 8  pp. 2150-2153
Type of Manuscript:  LETTER
Category: Image Processing and Video Processing
Keyword: 
image colorizationimage restorationsparse optimizationmatrix completion
 Summary | Full Text:PDF(561.9KB)