Kazuki KYAKUNO


A Study of the Near-Lossless Mode in JPEG-LS —Acceleration of Scalar Quantizer by GPGPU—
Yasuharu SHIBATA  Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2013/01/01
Vol. J96-A  No. 1  pp. 67-70
Type of Manuscript: LETTER
Category: 
Keyword: 
image codinglossless image compressionnear-lossless image compressionJPEG-LSGPGPU
  Summary |  Full Text(in Japanese):PDF (304.1KB)

Composition of the Optimal Interpolation Filter to the Pixel Processed by Average Pixel Method
Kazuyoshi MORIYA  Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2012/12/01
Vol. J95-A  No. 12  pp. 822-825
Type of Manuscript: LETTER
Category: 
Keyword: 
image filterarea averaging methodlanczos filterfrequency characteristics
  Summary |  Full Text(in Japanese):PDF (277.4KB)

Designing Average Preservation Image Filters in Terms of Trigonometric Polynomial
Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2012/11/01
Vol. J95-A  No. 11  pp. 773-782
Type of Manuscript: PAPER
Category: 
Keyword: 
AC component predictionimage filterBi-cubictrigonometric polynomial
  Summary |  Full Text(in Japanese):PDF (1.4MB)

A Study on the Near-Lossless Mode in JPEG-LS
Yusuke HOSHIZUKI  Yasuharu SHIBATA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2011/08/01
Vol. J94-A  No. 8  pp. 666-668
Type of Manuscript: LETTER
Category: 
Keyword: 
image codingAC component predictionlossless image compressionnear-lossless image compressionJPEG-LS.
  Summary |  Full Text(in Japanese):PDF (296.3KB)

Improving Average Preservation Image Filters Based on AC Component Prediction -- Image Sharpening in Terms of Deringing Filter --
Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2011/03/01
Vol. J94-A  No. 3  pp. 218-221
Type of Manuscript: LETTER
Category: 
Keyword: 
AC component predictionimage filterbi-cubicderinging
  Summary |  Full Text(in Japanese):PDF (265.9KB)

Applications of Hierarchical Lossless Image Compression Scheme Based on AC Component Prediction
Yusuke HOSHIZUKI  Yasuharu SHIBATA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2011/02/01
Vol. J94-A  No. 2  pp. 138-141
Type of Manuscript: LETTER
Category: 
Keyword: 
image codinghierarchical codingpyramidal AC component predictionlossless image compression
  Summary |  Full Text(in Japanese):PDF (119KB)

Improving Average Preservation Image Filters Based on AC Component Prediction--Removing Distortions Caused by Over-Undershoot--
Kazuyoshi MORIYA  Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2010/06/01
Vol. J93-A  No. 6  pp. 433-439
Type of Manuscript: LETTER
Category: 
Keyword: 
AC component predictionimage filterbi-linear filterbi-cubic filterover-undershoot
  Summary |  Full Text(in Japanese):PDF (262.3KB)

Designing Block Type Lossless Image Compression Scheme Based on AC Component Prediction
Yusuke HOSHIZUKI  Hidetomo TANAKA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2010/03/01
Vol. J93-A  No. 3  pp. 222-228
Type of Manuscript: LETTER
Category: 
Keyword: 
image codingAC component predictionlossless image compression
  Summary |  Full Text(in Japanese):PDF (149.4KB)

Implementation of Local Transformations for Geometric Compression for Polygon Data
Hiroshi NAGANO  Kazuki KYAKUNO  Kenta MATSUMOTO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2010/03/01
Vol. J93-A  No. 3  pp. 207-211
Type of Manuscript: LETTER
Category: 
Keyword: 
polygon meshgeometry compressionlocal orthogonal transformspeed-up
  Summary |  Full Text(in Japanese):PDF (141.2KB)

Improving Average Preservation Image Filters Based on AC Component Prediction --Analysis in termes of a One Parameter Family--
Yuki KOJIMA  Kazuyoshi MORIYA  Yusuke HOSHIZUKI  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2009/12/01
Vol. J92-A  No. 12  pp. 999-1008
Type of Manuscript: PAPER
Category: 
Keyword: 
AC component predictionimage filterbi-linearbi-cubic filter
  Summary |  Full Text(in Japanese):PDF (463.4KB)

Designing Average Preservation Image Filters Based on AC Component Prediction
Kazuyoshi MORIYA  Yusuke HOSHIZUKI  Yuki KOJIMA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2009/09/01
Vol. J92-A  No. 9  pp. 644-650
Type of Manuscript: LETTER
Category: 
Keyword: 
AC component predictionimage filterBi-linearBi-cubic filter
  Summary |  Full Text(in Japanese):PDF (309.4KB)

Improving AC Component Prediction in terms of Block Center Value Compensation and DC Component Conservation Filter
Yusuke HOSHIZUKI  Hidetomo TANAKA  Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2009/01/01
Vol. J92-A  No. 1  pp. 62-66
Type of Manuscript: LETTER
Category: 
Keyword: 
image codingAC component predictionfiltering
  Summary |  Full Text(in Japanese):PDF (130.1KB)

Reduction of Memory Size of Functional Tables on Acoustic Signal Encoder
Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2008/09/01
Vol. J91-A  No. 9  pp. 909-914
Type of Manuscript: LETTER
Category: 
Keyword: 
acoustic signal encoderROM tableSine-function generatorrecurrence equationFPGASlice
  Summary |  Full Text(in Japanese):PDF (134.2KB)

Reduction of Memory Size of Functional Tables on Acoustic Signal Decoder
Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2007/10/01
Vol. J90-A  No. 10  pp. 735-741
Type of Manuscript: PAPER
Category: 
Keyword: 
CODECacoustic signal decoderROM tablesin-function generatorrecurrence equationFPGAslice
  Summary |  Full Text(in Japanese):PDF (390.2KB)

Improving Digital sin-Function Generator Based on Bit-Shift Operation -- Reduction of Running Cycles --
Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2007/04/01
Vol. J90-A  No. 4  pp. 330-334
Type of Manuscript: LETTER
Category: 
Keyword: 
sin function generatorcomplex sin function generatorROM tablerecurrence equationFPGASlicerunning cycles
  Summary |  Full Text(in Japanese):PDF (353.6KB)

Study on Digital sin-Function Generators -Reduction of Circuit Size Using Bit-Shift Operation
Kazuki KYAKUNO  Ryuji TOKUNAGA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2007/02/01
Vol. J90-A  No. 2  pp. 165-169
Type of Manuscript: LETTER
Category: 
Keyword: 
sin-function generatorROM tablerecurrence equationFPGAslice
  Summary |  Full Text(in Japanese):PDF (247.1KB)