Shogo MURAMATSU


Look-Up-Table-Based Exponential Computation and Application to an EM Algorithm for GMM
Hidenori WATANABE  Shogo MURAMATSU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/05/01
Vol. E96-A  No. 5  pp. 935-939
Type of Manuscript: PAPER
Category: Digital Signal Processing
Keyword: 
EM algorithmGaussian mixture modelexponential function
  Summary |  Full Text:PDF (755.4KB)

Simple Bitplane Coding and Its Application to Multi-Functional Image Compression
Hisakazu KIKUCHI  Ryosuke ABE  Shogo MURAMATSU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/05/01
Vol. E95-A  No. 5  pp. 938-951
Type of Manuscript: PAPER
Category: Image
Keyword: 
image compressionimage codingcontext model
  Summary |  Full Text:PDF (5.4MB)

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 (131.6KB)

A Computer-Aided Distinction Method of Borderline Grades of Oral Cancer
Mustafa M. SAMI  Masahisa SAITO  Shogo MURAMATSU  Hisakazu KIKUCHI  Takashi SAKU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/08/01
Vol. E93-A  No. 8  pp. 1544-1552
Type of Manuscript: PAPER
Category: Image
Keyword: 
medical image analysisoral borderline malignancyfeature quantificationsegmentationedgel
  Summary |  Full Text:PDF (1.3MB)

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)

Constraints of Second-Order Vanishing Moments on Lattice Structures for Non-separable Orthogonal Symmetric Wavelets
Atsuyuki ADACHI  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/03/01
Vol. E92-A  No. 3  pp. 788-797
Type of Manuscript: Special Section PAPER (Special Section on Latest Advances in Fundamental Theories of Signal Processing)
Category: 
Keyword: 
waveletsorthogonal transformsnon-separable filter banksvanishing momentsvideo coding
  Summary |  Full Text:PDF (1000.9KB)

Lossless-by-Lossy Coding for Scalable Lossless Image Compression
Kazuma SHINODA  Hisakazu KIKUCHI  Shogo MURAMATSU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3356-3364
Type of Manuscript: PAPER
Category: Image
Keyword: 
image compressionlossless compressionscalable codingembedded codingwavelet transformcontext modeling
  Summary |  Full Text:PDF (429.7KB)

Functionally Layered Video Coding for Water Level Monitoring
Sakol UDOMSIRI  Masahiro IWAHASHI  Shogo MURAMATSU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/04/01
Vol. E91-A  No. 4  pp. 1006-1014
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
waterrecognitionvideocodingscalable
  Summary |  Full Text:PDF (2.6MB)

Color Demosaicing Using Asymmetric Directional Interpolation and Hue Vector Smoothing
Yoshihisa TAKAHASHI  Kentaro HIRAKI  Hisakazu KIKUCHI  Shogo MURAMATSU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/04/01
Vol. E91-A  No. 4  pp. 978-986
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
image processingcolor demosaicinginterpolationCFA
  Summary |  Full Text:PDF (2.5MB)

Equivalent Parallel Structure of Deinterlacer Banks and Its Application to Optimal Bit-Rate Allocation
Minoru HIKI  Shogo MURAMATSU  Takuma ISHIDA  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/03/01
Vol. E90-A  No. 3  pp. 642-650
Type of Manuscript: PAPER
Category: Digital Signal Processing
Keyword: 
3-D filter banksscalable video codingrate-distortion controlinterlace video
  Summary |  Full Text:PDF (781.7KB)

Parameter Embedding in Motion-JPEG2000 through ROI for Variable-Coefficient Invertible Deinterlacing
Jun UCHITA  Shogo MURAMATSU  Takuma ISHIDA  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/11/01
Vol. E89-D  No. 11  pp. 2794-2801
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
Keyword: 
invertible deinterlacingintra-frame-based codingSNR scalabilityvariable processingMotion-JPEG2000ROI (Region of Interest)
  Summary |  Full Text:PDF (955.8KB)

A New Color Demosaicing Method Using Asymmetric Average Interpolation and Its Iteration
Yoshihisa TAKAHASHI  Hisakazu KIKUCHI  Shogo MURAMATSU  Yoshito ABE  Naoki MIZUTANI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/08/01
Vol. E88-A  No. 8  pp. 2108-2116
Type of Manuscript: Special Section PAPER (Special Section on Papers Selected from the 19th Symposium on Signal Processing)
Category: Image
Keyword: 
color demosaicinginterpolationiterationasymmetric average
  Summary |  Full Text:PDF (1.3MB)

Evaluation of Selective Rake Receiver in Direct Sequence Ultra Wideband Communications
Mohammad Azizur RAHMAN  Shigenobu SASAKI  Jie ZHOU  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/07/01
Vol. E87-A  No. 7  pp. 1742-1746
Type of Manuscript: Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: Mobile Communication
Keyword: 
ultra widebandselective Rake receiverspreading bandwidthpower delay profilepartial band interference
  Summary |  Full Text:PDF (509.5KB)

A Parameter Decimation Technique for Variable-Coefficient Invertible Deinterlacing
Jun UCHITA  Takuma ISHIDA  Shogo MURAMATSU  Hisakazu KIKUCHI  Tetsuro KUGE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1363-1370
Type of Manuscript: Special Section PAPER (Special Section on Papers Selected from 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003))
Category: 
Keyword: 
invertible deinterlacingintraframe-based codingscalable codingvariable coefficientsMotion-JPEG2000
  Summary |  Full Text:PDF (1.5MB)

Online SNR and Fading Parameter Estimation for Parallel Combinatorial SS Systems in Nakagami Fading Channels
Kazuyuki UENAGA  Shigenobu SASAKI  Ken-ichi TAKIZAWA  Jie ZHOU  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/06/01
Vol. E87-A  No. 6  pp. 1495-1499
Type of Manuscript: Special Section LETTER (Special Section on Papers Selected from 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003))
Category: 
Keyword: 
spread spectrummulticode systemsonline SNR estimationNakagami fading
  Summary |  Full Text:PDF (260.3KB)

Generalized Spatial Correlation Equations for Antenna Arrays in Wireless Diversity Reception: Exact and Approximate Analyses
Jie ZHOU  Kenta ISHIZAWA  Shigenobu SASAKI  Shogo MURAMATSU  Hisakazu KIKUCHI  Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 204-208
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
spatial correlationangular spreadantenna array and diversity reception
  Summary |  Full Text:PDF (389.6KB)

A Lifting Implementation of Variable-Coefficient Invertible Deinterlacer with Embedded Motion Detector
Takuma ISHIDA  Tatsuumi SOYAMA  Shogo MURAMATSU  Hisakazu KIKUCHI  Tetsuro KUGE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/08/01
Vol. E86-A  No. 8  pp. 1942-1948
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
invertible deinterlacingvariable-coefficient filteringmotion-JPEG2000lifting implementation
  Summary |  Full Text:PDF (443.5KB)

Spatial Correlation Functions for a Circular Antenna Array and Their Applications in Wireless Communication Systems
Jie ZHOU  Shigenobu SASAKI  Shogo MURAMATSU  Hisakazu KIKUCHI  Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1716-1723
Type of Manuscript: Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
spatial correlated functionantenna arrayNakagami fadingMRC and diversity reception
  Summary |  Full Text:PDF (324.5KB)

Performance Analysis of a DS-CDMA Cellular System with Cell Splitting into Macrocell and Microcell Architecture
Jie ZHOU  Shigenobu SASAKI  Shogo MURAMATSU  Hisakazu KIKUCHI  Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/06/01
Vol. E86-B  No. 6  pp. 1967-1977
Type of Manuscript: PAPER
Category: Terrestrial Radio Communications
Keyword: 
system capacityoutage probabilitycapacity planecode division multiple access (CDMA)macrocell and microcell
  Summary |  Full Text:PDF (765.3KB)

Lifting Architecture of Invertible Deinterlacing
Tatsuumi SOYAMA  Takuma ISHIDA  Shogo MURAMATSU  Hisakazu KIKUCHI  Tetsuro KUGE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/04/01
Vol. E86-A  No. 4  pp. 779-786
Type of Manuscript: Special Section PAPER (Special Section of Selected Papers from the 15th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
deinterlacingdiscrete wavelet transformslifting schemeJPEG2000intra-frame-based motion picture coding
  Summary |  Full Text:PDF (1.1MB)

Online SNR Estimation for Parallel Combinatorial SS Systems in Nakagami Fading Channels
Ken-ichi TAKIZAWA  Shigenobu SASAKI  Jie ZHOU  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/12/01
Vol. E85-A  No. 12  pp. 2847-2858
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
multi-code DS/SSonline SNR estimationiterative decodingNakagami fading channels
  Summary |  Full Text:PDF (389.2KB)

Performance Investigation of Two Transmit Diversity Schemes with Perfect/Imperfect Channel Evaluation in Wireless Communications
Jie ZHOU  Hisakazu KIKUCHI  Shigenobu SASAKI  Shogo MURAMATSU  Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/10/01
Vol. E85-B  No. 10  pp. 1957-1965
Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
transmit diversityperfect/imperfect channel detectionantenna arraymaximal-ratio combiningmulti-path mitigation
  Summary |  Full Text:PDF (1MB)

Performance Bounds in Convolutional Coded Parallel Combinatorial SS Systems
Ken-ichi TAKIZAWA  Shigenobu SASAKI  Shogo MURAMATSU  Jie ZHOU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1696-1701
Type of Manuscript: Special Section LETTER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
multicode SSconvolutional codeiterative demodulation and decoding
  Summary |  Full Text:PDF (614.5KB)

Forward Link Performance of TDMA/W-CDMA Spectrum Overlaid System with Interference Cancellation for Future Wireless Communications
Jie ZHOU  Hisakazu KIKUCHI  Shigenobu SASAKI  Shogo MURAMATSU  Yoshikuni ONOZATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1536-1545
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
code division multiple access (CDMA)time-division multiple access (TDMA)TDMA/W-CDMA overlaid systemnotch filtersignal clipper
  Summary |  Full Text:PDF (635.3KB)

Iterative Demodulation and Decoding for Parallel Combinatorial SS Systems
Ken-ichi TAKIZAWA  Shigenobu SASAKI  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 2991-2999
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrummulti-code CDMAiterative decodingchannel coding
  Summary |  Full Text:PDF (1005KB)

Memory Access Estimation of Filter Bank Implementation on Different DSP Architectures
Naoki MIZUTANI  Shogo MURAMATSU  Hisakazu KIKUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/08/01
Vol. E84-A  No. 8  pp. 1951-1959
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: Implementations of Signal Processing Systems
Keyword: 
digital signal processor (DSP)filter bankwavelet transformmultiplier and accumulator (MAC)
  Summary |  Full Text:PDF (1.2MB)

Motion Estimation with Power Scalability and Its VHDL Model
Ayuko TAKAGI  Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/20
Vol. E83-A  No. 8  pp. 1608-1613
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: Implementations of Signal Processing Systems
Keyword: 
low powermotion estimationMPEGless gray level image
  Summary |  Full Text:PDF (829.7KB)

A Bit-Operation Algorithm of the Median-Cut Quantization and Its Hardware Architecture
Shogo MURAMATSU  Hitoshi KIYA  Akihiko YAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/02/20
Vol. E83-A  No. 2  pp. 320-328
Type of Manuscript: Special Section PAPER (Special Section on Intelligent Signal and Image Processing)
Category: 
Keyword: 
adaptive quantizationmedian valuemotion estimationVLSI
  Summary |  Full Text:PDF (1.1MB)

The Two-Dimensional Lapped Hadamard Transform
Shogo MURAMATSU  Akihiko YAMADA  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/08/20
Vol. E81-A  No. 8  pp. 1542-1549
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
image processingparaunitary systemsymmetric extensionlapped transformlattice structure
  Summary |  Full Text:PDF (768.7KB)

Multidimensional Multirate Filter and Filter Bank without Checkerboard Effect
Yasuhiro HARADA  Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/08/20
Vol. E81-A  No. 8  pp. 1607-1615
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
multidimensional signal processingmultirate filtermultirate filter bankcheckerboard effect
  Summary |  Full Text:PDF (737.4KB)

A Design Method of Odd-Channel Linear-Phase Paraunitary Filter Banks with a Lattice Structure
Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/05/20
Vol. E81-A  No. 5  pp. 976-980
Type of Manuscript: LETTER
Category: Digital Signal Processing
Keyword: 
multirate filter banksparaunitary systemlinear-phase filtersubband image codingnon-linear optimization
  Summary |  Full Text:PDF (338.9KB)

FFT-Based Implementation of Sampling Rate Conversion with a Small Number of Delays
Xiaoxia ZOU  Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/08/20
Vol. E80-A  No. 8  pp. 1367-1375
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
multirate signal processingsampling rate conversionoverlap-add/save method
  Summary |  Full Text:PDF (593.6KB)

A New Factorization Technique for the Generalized Linear-Phase LOT and Its Fast Implementation
Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/20
Vol. E79-A  No. 8  pp. 1173-1179
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
multirate filter banksparaunitary systemlinear-phase filtersubband image coding
  Summary |  Full Text:PDF (599.7KB)

Parallel Processing Techniques for Multidimensional Sampling Lattice Alteration Based on Overlap-Add and Overlap-Save Methods
Shogo MURAMATSU  Hitoshi KIYA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/08/20
Vol. E78-A  No. 8  pp. 934-943
Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
multidimensional signal processingmultirate signal processingparallel processingoverlap-add/save method
  Summary |  Full Text:PDF (767.5KB)

Scale Factor of Resolution Conversion Based on Orthogonal Transforms
Shogo MURAMATSU  Hitoshi KIYA  Masahiko SAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/20
Vol. E76-A  No. 7  pp. 1150-1153
Type of Manuscript: Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
Category: 
Keyword: 
digital image processingfilter banksresolution conversionorthogonal transform
  Summary |  Full Text:PDF (357.9KB)