Masaaki IKEHARA


Detail Preserving Mixed Noise Removal by DWM Filter and BM3D
Takuro YAMAGUCHI Aiko SUZUKI Masaaki IKEHARA 
Publication:   
Publication Date: 2017/11/01
Vol. E100-A  No. 11  pp. 2451-2457
Type of Manuscript:  PAPER
Category: Image
Keyword: 
image denoisingmixed noiseDWM filterBM3D
 Summary | Full Text:PDF(1.9MB)

Random-Valued Impulse Noise Removal Using Non-Local Search for Similar Structures and Sparse Representation
Kengo TSUDA Takanori FUJISAWA Masaaki IKEHARA 
Publication:   
Publication Date: 2017/10/01
Vol. E100-A  No. 10  pp. 2146-2153
Type of Manuscript:  PAPER
Category: Image
Keyword: 
image denoisingrandom-valued impulse noisesparse representationDCT basis
 Summary | Full Text:PDF(3.2MB)

Image Restoration of JPEG Encoded Images via Block Matching and Wiener Filtering
Yutaka TAKAGI Takanori FUJISAWA Masaaki IKEHARA 
Publication:   
Publication Date: 2017/09/01
Vol. E100-A  No. 9  pp. 1993-2000
Type of Manuscript:  PAPER
Category: Image
Keyword: 
JPEGsignificationblock noisewiener filterblock matchingdiscrete cosine transformRGB color spaceYCbCR color spaceminimization problem
 Summary | Full Text:PDF(1.6MB)

Fast and High Quality Image Interpolation for Single-Frame Using Multi-Filtering and Weighted Mean
Takuro YAMAGUCHI Masaaki IKEHARA 
Publication:   
Publication Date: 2017/05/01
Vol. E100-A  No. 5  pp. 1119-1126
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
image interpolationsingle-frame upsamplingfilteringweighted mean
 Summary | Full Text:PDF(1.8MB)

Dual-DCT-Lifting-Based Lapped Transform with Improved Reversible Symmetric Extension
Taizo SUZUKI Masaaki IKEHARA 
Publication:   
Publication Date: 2017/05/01
Vol. E100-A  No. 5  pp. 1109-1118
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
discrete cosine transformlapped transformlifting structurelossy-to-lossless image codingreversible symmetric extension
 Summary | Full Text:PDF(1.3MB)

Blind Image Deconvolution Using Specified 2-D HPF for Feature Extraction and Conjugate Gradient Method in Frequency Domain
Takanori FUJISAWA Masaaki IKEHARA 
Publication:   
Publication Date: 2017/03/01
Vol. E100-A  No. 3  pp. 846-853
Type of Manuscript:  PAPER
Category: Image
Keyword: 
deblurringfeature extractionoptimization
 Summary | Full Text:PDF(6.2MB)

Single Image Super Resolution by l2 Approximation with Random Sampled Dictionary
Takanori FUJISAWA Taichi YOSHIDA Kazu MISHIBA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/02/01
Vol. E99-A  No. 2  pp. 612-620
Type of Manuscript:  PAPER
Category: Image
Keyword: 
single image super resolutionl2-norm minimizationexample-based
 Summary | Full Text:PDF(2MB)

Adaptive Reversible Data Hiding via Integer-to-Integer Subband Transform and Adaptive Generalized Difference Expansion Method
Taichi YOSHIDA Taizo SUZUKI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 384-392
Type of Manuscript:  PAPER
Category: Image
Keyword: 
adaptive reversible data hidingadaptive generalized difference expansionfrequency domaininteger-to-integer subband transform
 Summary | Full Text:PDF(2.3MB)

Content Aware Image Resizing with Constraint of Object Aspect Ratio Preservation
Kazu MISHIBA Masaaki IKEHARA Takeshi YOSHITOME 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/11/01
Vol. E96-D  No. 11  pp. 2427-2436
Type of Manuscript:  PAPER
Category: Image Processing and Video Processing
Keyword: 
content-aware image resizinggrid transformationwarping methodaspect ratio preservation
 Summary | Full Text:PDF(5MB)

Two Dimensional M-Channel Non-separable Filter Banks Based on Cosine Modulated Filter Banks with Diagonal Shifts
Taichi YOSHIDA Seisuke KYOCHI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/08/01
Vol. E96-A  No. 8  pp. 1685-1694
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
two dimensional non-separable filter banksdirectional filter bankscosine modulated filter banksparaunitary
 Summary | Full Text:PDF(1.6MB)

Improved Seam Merging for Content-Aware Image Resizing
Kazu MISHIBA Masaaki IKEHARA Takeshi YOSHITOME 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/02/01
Vol. E96-D  No. 2  pp. 349-356
Type of Manuscript:  PAPER
Category: Image Processing and Video Processing
Keyword: 
content-aware image resizingseam carvingseam merging
 Summary | Full Text:PDF(3.2MB)

Two Dimensional Non-separable Adaptive Directional Lifting Structure of Discrete Wavelet Transform
Taichi YOSHIDA Taizo SUZUKI Seisuke KYOCHI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/10/01
Vol. E94-A  No. 10  pp. 1920-1927
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
two dimensional non-separable lifting structurediscrete wavelet transformadaptive directional filteringlossy and lossless image coding
 Summary | Full Text:PDF(1.2MB)

A Linear Optimization of Dual-Tree Complex Wavelet Transform
Seisuke KYOCHI Takafumi SHIMIZU Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1386-1393
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
dual-tree complex wavelet transformhalf sample delay conditiondirectionalityshift invarianceleast squares method
 Summary | Full Text:PDF(958.9KB)

A Simplified Lattice Structure of Two Dimensional Generalized Lapped Orthogonal Transform
Taichi YOSHIDA Seisuke KYOCHI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 671-679
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
two dimensional nonseparable filter banksparaunitarylinear-phase
 Summary | Full Text:PDF(742.6KB)

M-Channel Paraunitary Filter Banks Based on Direct Lifting Structure of Building Block and Its Inverse Transform for Lossless-to-Lossy Image Coding
Taizo SUZUKI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/08/01
Vol. E93-A  No. 8  pp. 1457-1464
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
paraunitary filter bank (PUFB)direct liftinglossless-to-lossy image codingside information block (SIB)
 Summary | Full Text:PDF(811.7KB)

FOREWORD
Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/08/01
Vol. E93-A  No. 8  pp. 1399-1399
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(85.1KB)

Image Interpolation Using Edge-Directed Smoothness Measure Filter
Kazu MISHIBA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/06/01
Vol. E93-D  No. 6  pp. 1618-1624
Type of Manuscript:  PAPER
Category: Image Processing and Video Processing
Keyword: 
adaptive image interpolationedge-directed smoothnessobservation model
 Summary | Full Text:PDF(952.5KB)

A Class of Near Shift-Invariant and Orientation-Selective Transform Based on Delay-Less Oversampled Even-Stacked Cosine-Modulated Filter Banks
Seisuke KYOCHI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/04/01
Vol. E93-A  No. 4  pp. 724-733
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
even-stacked cosine-modulated filter bankovercomplete transformdirectionalitynear shift-invariance
 Summary | Full Text:PDF(907.2KB)

Integer Discrete Cosine Transform via Lossless Walsh-Hadamard Transform with Structural Regularity for Low-Bit-Word-Length
Taizo SUZUKI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/04/01
Vol. E93-A  No. 4  pp. 734-741
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
integer discrete cosine transform (IntDCT)dyadic valueslow-bit-word-lengthlossless Walsh-Hadamard transform (LWHT)lossless-to-lossy image coding
 Summary | Full Text:PDF(520.9KB)

A Novel Design of Regular Cosine-Modulated Filter Banks for Image Coding
Toshiyuki UTO Masaaki IKEHARA Kenji OHUE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/07/01
Vol. E92-A  No. 7  pp. 1633-1641
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
transform codingcosine-modulated filter bankregularitylattice structure
 Summary | Full Text:PDF(524.7KB)

A Bottom-Up Design Approach of Critically Sampled Contourlet Transform for Efficient Image Representation
Seisuke KYOCHI Shizuka HIGAKI Yuichi TANAKA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/03/01
Vol. E92-A  No. 3  pp. 762-771
Type of Manuscript:  Special Section PAPER (Special Section on Latest Advances in Fundamental Theories of Signal Processing)
Category: 
Keyword: 
critical samplingcontourletdirectional filter bankwavelet transformnon-linear approximation
 Summary | Full Text:PDF(1.6MB)

Design of M-Channel Perfect Reconstruction Filter Banks with IIR-FIR Hybrid Building Blocks
Shunsuke IWAMURA Taizo SUZUKI Yuichi TANAKA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/08/01
Vol. E90-A  No. 8  pp. 1636-1643
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
M-channel infinite impulse response perfect reconstruction filter banksstate space representationFIR-IIR hybrid building blocks
 Summary | Full Text:PDF(379.4KB)

Design of Equiripple Minimum Phase FIR Filters with Ripple Ratio Control
Masahiro OKUDA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/03/01
Vol. E89-A  No. 3  pp. 751-756
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
FIR filterminimum phaseripple ratiobandpass filters
 Summary | Full Text:PDF(292.3KB)

Simultaneous Approximation for Magnitude and Phase Responses of FIR Digital Filters
Masahiro OKUDA Masahiro YOSHIDA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/11/01
Vol. E87-A  No. 11  pp. 2957-2963
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
FIR filterscomplex Chebyshev approximationleast squares method
 Summary | Full Text:PDF(774.2KB)

Design of Generalized Filter Banks with Unequal-Length and Its Application of Image Coding
Atsuhiko SAITO Toshichika URUSHIBARA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/07/01
Vol. E87-A  No. 7  pp. 1756-1764
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
filter bankslapped transformsimage coding
 Summary | Full Text:PDF(582.7KB)

Measuring Errors on 3D Meshes Using Pixel Based Search
Kohji INAGAKI Masahiro OKUDA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/09/01
Vol. E86-D  No. 9  pp. 1903-1908
Type of Manuscript:  PAPER
Category: Computer Graphics
Keyword: 
measuring errors3D meshes2-dimensional search
 Summary | Full Text:PDF(534.3KB)

Compression of 3D Models by Remesh on Texture Images
Masahiro OKUDA Kyoko NAGATOMO Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/06/01
Vol. E86-D  No. 6  pp. 1110-1115
Type of Manuscript:  PAPER
Category: Computer Graphics
Keyword: 
3D modelcompressionregular meshtexture
 Summary | Full Text:PDF(1.2MB)

Digital Compensation Scheme for Coefficient Errors of Complex Filter Bank Parallel A/D Converter in Low-IF Receivers
Yukitoshi SANADA Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2656-2662
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
low-IF receiverfilter bankA/D convertersoftware radio
 Summary | Full Text:PDF(1.4MB)

Filter Banks with Nonlinear Lifting Steps for Lossless Image Compression
Masahiro OKUDA Sanjit K. MITRA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Vol. E84-A  No. 3  pp. 797-801
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
filter bankliftinglossless image compression
 Summary | Full Text:PDF(373.8KB)

Fast LOT with Unequal Length Basis Functions: Realization and Application in Subband Image Coding
Takayuki NAGAI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/25
Vol. E82-A  No. 5  pp. 825-834
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
lapped transformfast algorithmsubband image coding
 Summary | Full Text:PDF(1.7MB)

Design of Biorthogonal Filter Banks Composed of Linear Phase IIR Filters
Masahiro OKUDA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2449-2454
Type of Manuscript:  PAPER
Category: Neural Networks
Keyword: 
IIR filter bankslinear phase responsenoncausal filteringwavelet image conding
 Summary | Full Text:PDF(444.7KB)

Design and Lattice Structure of FIR Paraunitary Filter Banks with Linear Phase
Takayuki NAGAI C.W. KOK Masaaki IKEHARA Truong Q. NGUYEN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/04/25
Vol. E80-A  No. 4  pp. 712-721
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
filter bankslinear phaselattice structure
 Summary | Full Text:PDF(667.6KB)

Simultaneous Approximation for IIR Digital Filters with Log Magnitude and Phase Response
Masahiro OKUDA Masaaki IKEHARA Shin-ichi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/11/25
Vol. E79-A  No. 11  pp. 1879-1885
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
IIR digital filterlog magnitude responsesteepest decent methodrobust algorithm
 Summary | Full Text:PDF(438.6KB)

A Design Method of All-Pass Networks Based on the Eigen Filter Method with Consideration of the Stability
Yasuhiro TOGURI Masaaki IKEHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/07/25
Vol. E78-A  No. 7  pp. 885-889
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
all-pass filterseigen filterstability
 Summary | Full Text:PDF(329KB)