Kiichi URAHAMA


Color Error Diffusion Based on Neugebauer Model
Hengjun YU Kohei INOUE Kenji HARA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/09/01
Vol. E99-A  No. 9  pp. 1758-1761
Type of Manuscript:  LETTER
Category: Image
Keyword: 
color error diffusionNeugebauer modeleye model-based mean squared error (E-MSE)
 Summary | Full Text:PDF(3MB)

Generation of Oil-Film-Like Images by Bilateral Infra-Envelope Filter
Toru HIRAOKA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/06/01
Vol. E99-D  No. 6  pp. 1724-1728
Type of Manuscript:  LETTER
Category: Computer Graphics
Keyword: 
non-photorealistic renderingoil filmbilateral infra-envelope filterunsharp mask
 Summary | Full Text:PDF(9.8MB)

On Hue-Preserving Saturation Enhancement in Color Image Enhancement
Kohei INOUE Kenji HARA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/03/01
Vol. E98-A  No. 3  pp. 927-931
Type of Manuscript:  LETTER
Category: Image
Keyword: 
color image enhancementsaturationequihue plane
 Summary | Full Text:PDF(142.6KB)

Hue-Preserving Unsharp-Masking for Color Image Enhancement
Zihan YU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/12/01
Vol. E97-D  No. 12  pp. 3236-3238
Type of Manuscript:  LETTER
Category: Image Processing and Video Processing
Keyword: 
hue-preserving unsharp-maskingimage enhancementcontrast magnificationimage sharpeningcolor tonescene depth
 Summary | Full Text:PDF(5.5MB)

Cartesian Resizing of Line Drawing Pictures for Pixel Line Arts
Zhongying HU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/04/01
Vol. E97-D  No. 4  pp. 1008-1010
Type of Manuscript:  LETTER
Category: Computer Graphics
Keyword: 
pixel line artline drawingsCartesian resizingtopological property
 Summary | Full Text:PDF(429.3KB)

Iterative Method for Inverse Nonlinear Image Processing
Zihan YU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/02/01
Vol. E97-A  No. 2  pp. 719-721
Type of Manuscript:  LETTER
Category: Image
Keyword: 
nonlinear image processinginverse transformiterative methodimage enhancement
 Summary | Full Text:PDF(6.2MB)

Generation of Moire-Picture-Like Color Images by Bilateral Filter
Toru HIRAOKA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/08/01
Vol. E96-D  No. 8  pp. 1862-1866
Type of Manuscript:  LETTER
Category: Fundamentals of Information Systems
Keyword: 
non-photorealistic renderingmoirebilateral filter
 Summary | Full Text:PDF(3.2MB)

Anisotropic Lp Poisson Disk Sampling for NPR Image with Adaptively Shaped Pieces
Tao WANG Zhongying HU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2013/06/01
Vol. E96-D  No. 6  pp. 1406-1409
Type of Manuscript:  LETTER
Category: Computer Graphics
Keyword: 
non-photorealistic renderingpoisson disk samplinganisotropic distancestippling imagespaper mosaics
 Summary | Full Text:PDF(2.8MB)

Halftoning with Weighted Centroidal Voronoi Tessellations
Kohei INOUE Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/06/01
Vol. E95-A  No. 6  pp. 1103-1105
Type of Manuscript:  LETTER
Category: Computer Graphics
Keyword: 
non-photorealistic renderinghalftoningweighted centroidal Voronoi tessellation
 Summary | Full Text:PDF(1.9MB)

Non-iterative Symmetric Two-Dimensional Linear Discriminant Analysis
Kohei INOUE Kenji HARA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/04/01
Vol. E94-D  No. 4  pp. 926-929
Type of Manuscript:  LETTER
Category: Pattern Recognition
Keyword: 
symmetric two-dimensional linear discriminant analysisface recognitiondimensionality reduction
 Summary | Full Text:PDF(336.9KB)

Edge-Preserving Cross-Sharpening of Multi-Modal Images
Yu QIU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/03/01
Vol. E94-D  No. 3  pp. 718-720
Type of Manuscript:  LETTER
Category: Image Processing and Video Processing
Keyword: 
unsharp maskingmulti-modal imagecross-sharpeninghalo
 Summary | Full Text:PDF(327.2KB)

Graph-Spectral Filter for Removing Mixture of Gaussian and Random Impulsive Noise
Yu QIU Zenggang DU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 457-460
Type of Manuscript:  LETTER
Category: Image
Keyword: 
graph-spectral methodimage denoisingmixed noiseclustering filter
 Summary | Full Text:PDF(1.2MB)

Denoising of Multi-Modal Images with PCA Self-Cross Bilateral Filter
Yu QIU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/09/01
Vol. E93-A  No. 9  pp. 1709-1712
Type of Manuscript:  LETTER
Category: Image
Keyword: 
multi-modal imagebilateral filtercross bilateral filterprincipal component analysis
 Summary | Full Text:PDF(567.9KB)

n-Mode Singular Vector Selection in Higher-Order Singular Value Decomposition
Kohei INOUE Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Vol. E91-A  No. 11  pp. 3380-3384
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
dimensionality reductionhigher-order singular value decompositionn-mode singular vector
 Summary | Full Text:PDF(287.3KB)

Semi-Supervised Classification with Spectral Projection of Multiplicatively Modulated Similarity Data
Weiwei DU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/09/01
Vol. E90-D  No. 9  pp. 1456-1459
Type of Manuscript:  LETTER
Category: Pattern Recognition
Keyword: 
semi-supervised classificationinductive learningspectral data projectionmultiplicative similarity modulation
 Summary | Full Text:PDF(200.7KB)

Semi-Supervised Classification with Spectral Subspace Projection of Data
Weiwei DU Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 374-377
Type of Manuscript:  LETTER
Category: Pattern Recognition
Keyword: 
semi-supervised classificationinductive learningregularized normalizationspectral subspace projection
 Summary | Full Text:PDF(289.2KB)

Unsupervised and Semi-Supervised Extraction of Clusters from Hypergraphs
Weiwei DU Kohei INOUE Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/07/01
Vol. E89-D  No. 7  pp. 2315-2318
Type of Manuscript:  LETTER
Category: Biological Engineering
Keyword: 
unsupervised clusteringsemi-supervised clusteringgraph spectral methodhypergraph spectral method
 Summary | Full Text:PDF(426.8KB)

Continuous Optimization for Item Selection in Collaborative Filtering
Kohei INOUE Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/07/01
Vol. E87-D  No. 7  pp. 1987-1988
Type of Manuscript:  LETTER
Category: Biocybernetics, Neurocomputing
Keyword: 
collaborative filteringitem selectioninterior point method
 Summary | Full Text:PDF(104.1KB)

Nonlinear Scale Spaces by Iterated Filtering of Images
Kiichi URAHAMA Kohei INOUE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/07/01
Vol. E86-D  No. 7  pp. 1191-1197
Type of Manuscript:  Special Section PAPER (Special Issue on Multiresolution Analysis)
Category: 
Keyword: 
nonlinear scale spaceiterated filteringedge sharpeningimage contrast enhancement
 Summary | Full Text:PDF(527.6KB)

Convergence of Alternative C-Means Clustering Algorithms
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/04/01
Vol. E86-D  No. 4  pp. 752-754
Type of Manuscript:  LETTER
Category: Pattern Recognition
Keyword: 
alternative c-means algorithmrobust clusteringLegendre transform
 Summary | Full Text:PDF(104.2KB)

Multimodal Pattern Classifiers with Feedback of Class Memberships
Kohei INOUE Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/03/25
Vol. E82-D  No. 3  pp. 712-716
Type of Manuscript:  LETTER
Category: Bio-Cybernetics and Neurocomputing
Keyword: 
multimodal pattern classifierfeedbackMcGurk effect
 Summary | Full Text:PDF(251.5KB)

Monochromatic Visualization of Multimodal Images by Projection Pursuit
Seiji HOTTA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/12/25
Vol. E81-A  No. 12  pp. 2715-2718
Type of Manuscript:  LETTER
Category: Image Theory
Keyword: 
multimodal image fusionprojection pursuitanisotropic diffusion
 Summary | Full Text:PDF(761.3KB)

Function Regression for Image Restoration by Fuzzy Hough Transform
Koichiro KUBO Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/06/25
Vol. E81-A  No. 6  pp. 1305-1309
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
function approximationfuzzy Hough transformimage restoration
 Summary | Full Text:PDF(334.7KB)

Bayesian Formulation of Nonlinear Filters and Their Electronic Implementation
Sadanobu YOSHIMOTO Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/02/25
Vol. E81-A  No. 2  pp. 343-346
Type of Manuscript:  LETTER
Category: Analog Signal Processing
Keyword: 
nonlinear filterstatistical estimationanalog circuit
 Summary | Full Text:PDF(305.3KB)

Nonlinear Attractive Force Model for Perceptual Clustering and Geometrical Illusions
Hiroyuki MATSUNAGA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/10/25
Vol. E79-A  No. 10  pp. 1587-1594
Type of Manuscript:  Special Section PAPER (Special Section on Nonlinear Theory and its Applications (NOLTA))
Category: Neural Nets and Human Being
Keyword: 
dot patternline segment patternperceptual clusteringgeometrical illusion
 Summary | Full Text:PDF(643KB)

Image Restoration by Spatial Clustering
Hiroto SHINGAI Hiroyuki MATSUNAGA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/07/25
Vol. E79-D  No. 7  pp. 1000-1003
Type of Manuscript:  LETTER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
image restorationspatial clusteringsparse data
 Summary | Full Text:PDF(287.4KB)

Partially Supervised Learning for Nearest Neighbor Classifiers
Hiroyuki MATSUNAGA Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/02/25
Vol. E79-D  No. 2  pp. 130-135
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
nearest neighbor classifieroutlier rejectionpartially supervised learning
 Summary | Full Text:PDF(407.4KB)

Equivalence between Some Dynamical Systems for Optimization
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/02/25
Vol. E78-A  No. 2  pp. 268-271
Type of Manuscript:  LETTER
Category: Optimization Techniques
Keyword: 
Probabilistic relaxationPotts neural networksInterior point method
 Summary | Full Text:PDF(239.3KB)

Modified Deformable Model for Bijective Topology Preserving Map
Kiichi URAHAMA Satoshi KAWAKAMI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1994/10/25
Vol. E77-D  No. 10  pp. 1186-1188
Type of Manuscript:  LETTER
Category: Bio-Cybernetics and Neurocomputing
Keyword: 
generalized deformable modeltopology preserving map
 Summary | Full Text:PDF(201.4KB)

Kth Largest Element Selection Circuit for Order Statistics Signal Processing
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/07/25
Vol. E77-A  No. 7  pp. 1217-1218
Type of Manuscript:  LETTER
Category: Nonlinear Circuits and Systems
Keyword: 
analog circuitorder statisticsmedian filter
 Summary | Full Text:PDF(135.1KB)

Analog Method for Solving Combinatorial Optimization Problems
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/01/25
Vol. E77-A  No. 1  pp. 302-308
Type of Manuscript:  PAPER
Category: Neural Networks
Keyword: 
Hopfield networksLagrangian functionanalog circuitsannealing
 Summary | Full Text:PDF(488.2KB)

Unsupervised Learning Algorithm for Fuzzy Clustering
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1993/03/25
Vol. E76-D  No. 3  pp. 390-391
Type of Manuscript:  LETTER
Category: Bio-Cybernetics
Keyword: 
neural networksfuzzy clustering
 Summary | Full Text:PDF(111.4KB)

Performance Evaluation of Hopfield Network for Simple Examples
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/06/25
Vol. E74-A  No. 6  pp. 1471-1475
Type of Manuscript:  Special Section PAPER (Special Issue on Nonlinear Theory and Its Applications)
Category: 
Keyword: 
 Summary | Full Text:PDF(329.4KB)

Learning Temporal waveforms in Neural Networks
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/12/25
Vol. E73-E  No. 12  pp. 1925-1931
Type of Manuscript:  Special Section PAPER (Special Issue on the 3rd Karuizawa Workshop on Circuits and Systems)
Category: Neural Networks
Keyword: 
 Summary | Full Text:PDF(491.9KB)

Hopfield-Type K-Winners-Take-All Networks
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/10/25
Vol. E73-E  No. 10  pp. 1727-1728
Type of Manuscript:  LETTER
Category: Bio-Cybernetics
Keyword: 
 Summary | Full Text:PDF(147.9KB)

Adaptive Control of Time-Steps in Hopfield's Numerical Optimization
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/10/25
Vol. E72-E  No. 10  pp. 1091-1092
Type of Manuscript:  LETTER
Category: Artificial Intelligence and Cognitive Science
Keyword: 
 Summary | Full Text:PDF(154.3KB)

Global Stability of Some Classes of Neural Networks
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/07/25
Vol. E72-E  No. 7  pp. 863-867
Type of Manuscript:  PAPER
Category: Bio-Cybernetics
Keyword: 
 Summary | Full Text:PDF(379.1KB)

Relaxation-Based Circuit Simulation
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/12/25
Vol. E71-E  No. 12  pp. 1189-1194
Type of Manuscript:  REVIEW PAPER
Category: 
Keyword: 
 Summary | Full Text:PDF(492.7KB)

Monotonic Properties for the Response of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/05/25
Vol. E71-E  No. 5  pp. 475-478
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(237.2KB)

Asynchronous Waveform Relaxation-Newton Method
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/02/25
Vol. E71-E  No. 2  pp. 123-124
Type of Manuscript:  LETTER
Category: Numerical Calculation and Mathematical Programming
Keyword: 
 Summary | Full Text:PDF(122KB)

Monotone Sensitivity of Resistor-Transfergate-Capacitor Ladder Network Driven by Logic Gate
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/01/25
Vol. E71-E  No. 1  pp. 16-21
Type of Manuscript:  PAPER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(397.5KB)

Circuit Simulation Using Event-Driven Waveform Relaxation-Newton Method
Kiichi URAHAMA Yuji KAWANE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/01/25
Vol. E71-E  No. 1  pp. 1-3
Type of Manuscript:  LETTER
Category: Hearing
Keyword: 
 Summary | Full Text:PDF(217KB)

Convergence of Asynchronous Iterated Timing Analysis
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/11/25
Vol. E70-E  No. 11  pp. 1096-1098
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(217.3KB)

Convergence of Relaxation-Based Circuit Simulation Techniques
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/10/25
Vol. E70-E  No. 10  pp. 887-889
Type of Manuscript:  LETTER
Category: VLSI Design Technology
Keyword: 
 Summary | Full Text:PDF(185.9KB)

Convergence of Asynchronous Waveform Relaxation Algorithm
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/09/25
Vol. E70-E  No. 9  pp. 795-797
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(134.5KB)

Sufficient Conditions for Multirate Iterated Timing Analysis to Converge
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/08/25
Vol. E70-E  No. 8  pp. 685-688
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(247.1KB)

Monotone Convergence of the Sequence of Iterated Waveforms in the Waveform Relaxation Method
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Vol. E70-E  No. 4  pp. 407-410
Type of Manuscript:  PAPER
Category: Nonlinear Problems
Keyword: 
 Summary | Full Text:PDF(317.8KB)

Monotone Sensitivity of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/03/25
Vol. E70-E  No. 3  pp. 169-171
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(176.3KB)

Qualitative Behaviors of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/03/25
Vol. E70-E  No. 3  pp. 165-168
Type of Manuscript:  LETTER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(254.2KB)

Sufficient Conditions for a Generalized Waveform Relaxation to Converge Locally
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/02/25
Vol. E70-E  No. 2  pp. 106-109
Type of Manuscript:  PAPER
Category: General
Keyword: 
 Summary | Full Text:PDF(322.6KB)

Sufficient Conditions for Iterated Timing Analysis to Converge Locally
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/12/25
Vol. E69-E  No. 12  pp. 1289-1293
Type of Manuscript:  PAPER
Category: Circuit Theory
Keyword: 
 Summary | Full Text:PDF(354KB)