Kiichi URAHAMA


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 (336.2KB)

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 (326.5KB)

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 (566.4KB)

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 (286.4KB)

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 (201.3KB)

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 (290.5KB)

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 (428KB)

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 (104KB)

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 (530.6KB)

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 (106.5KB)

Multimodal Pattern Classifiers with Feedback of Class Memberships
Kohei INOUE  Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/03/20
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 (254.2KB)

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: 1998/12/20
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 (763KB)

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: 1998/06/20
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 (336KB)

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: 1998/02/20
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 (306.5KB)

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: 1996/10/20
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 (645KB)

Image Restoration by Spatial Clustering
Hiroto SHINGAI  Hiroyuki MATSUNAGA  Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/07/20
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 (288.8KB)

Partially Supervised Learning for Nearest Neighbor Classifiers
Hiroyuki MATSUNAGA  Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/02/20
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 (409.1KB)

Equivalence between Some Dynamical Systems for Optimization
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/02/20
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 (239.5KB)

Modified Deformable Model for Bijective Topology Preserving Map
Kiichi URAHAMA  Satoshi KAWAKAMI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1994/10/20
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 (202.4KB)

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: 1994/07/20
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 (135.5KB)

Analog Method for Solving Combinatorial Optimization Problems
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/01/20
Vol. E77-A  No. 1  pp. 302-308
Type of Manuscript: PAPER
Category: Neural Networks
Keyword: 
Hopfield networksLagrangian functionanalog circuitsannealing
  Summary |  Full Text:PDF (488.3KB)

Unsupervised Learning Algorithm for Fuzzy Clustering
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1993/03/20
Vol. E76-D  No. 3  pp. 390-391
Type of Manuscript: LETTER
Category: Bio-Cybernetics
Keyword: 
neural networksfuzzy clustering
  Summary |  Full Text:PDF (112.3KB)

Performance Evaluation of Hopfield Network for Simple Examples
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1991/06/20
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 (330.6KB)

Learning Temporal waveforms in Neural Networks
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/12/20
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: 1990/10/20
Vol. E73-E  No. 10  pp. 1727-1728
Type of Manuscript: LETTER
Category: Bio-Cybernetics
Keyword: 
  Summary |  Full Text:PDF (148.2KB)

Adaptive Control of Time-Steps in Hopfield's Numerical Optimization
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/10/20
Vol. E72-E  No. 10  pp. 1091-1092
Type of Manuscript: LETTER
Category: Artificial Intelligence and Cognitive Science
Keyword: 
  Summary |  Full Text:PDF (154.7KB)

Global Stability of Some Classes of Neural Networks
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/07/20
Vol. E72-E  No. 7  pp. 863-867
Type of Manuscript: PAPER
Category: Bio-Cybernetics
Keyword: 
  Summary |  Full Text:PDF (379.3KB)

Relaxation-Based Circuit Simulation
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/12/20
Vol. E71-E  No. 12  pp. 1189-1194
Type of Manuscript: REVIEW PAPER
Category: 
Keyword: 
  Summary |  Full Text:PDF (492.8KB)

Monotonic Properties for the Response of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/05/20
Vol. E71-E  No. 5  pp. 475-478
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (237.4KB)

Asynchronous Waveform Relaxation-Newton Method
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/02/20
Vol. E71-E  No. 2  pp. 123-124
Type of Manuscript: LETTER
Category: Numerical Calculation and Mathematical Programming
Keyword: 
  Summary |  Full Text:PDF (122.4KB)

Circuit Simulation Using Event-Driven Waveform Relaxation-Newton Method
Kiichi URAHAMA  Yuji KAWANE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/01/20
Vol. E71-E  No. 1  pp. 1-3
Type of Manuscript: LETTER
Category: Hearing
Keyword: 
  Summary |  Full Text:PDF (217.3KB)

Monotone Sensitivity of Resistor-Transfergate-Capacitor Ladder Network Driven by Logic Gate
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/01/20
Vol. E71-E  No. 1  pp. 16-21
Type of Manuscript: PAPER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (397.6KB)

Convergence of Asynchronous Iterated Timing Analysis
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/11/20
Vol. E70-E  No. 11  pp. 1096-1098
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (217.6KB)

Convergence of Relaxation-Based Circuit Simulation Techniques
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/10/20
Vol. E70-E  No. 10  pp. 887-889
Type of Manuscript: LETTER
Category: VLSI Design Technology
Keyword: 
  Summary |  Full Text:PDF (186.2KB)

Convergence of Asynchronous Waveform Relaxation Algorithm
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/09/20
Vol. E70-E  No. 9  pp. 795-797
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (134.8KB)

Sufficient Conditions for Multirate Iterated Timing Analysis to Converge
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/08/20
Vol. E70-E  No. 8  pp. 685-688
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (247.3KB)

Monotone Convergence of the Sequence of Iterated Waveforms in the Waveform Relaxation Method
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/20
Vol. E70-E  No. 4  pp. 407-410
Type of Manuscript: PAPER
Category: Nonlinear Problems
Keyword: 
  Summary |  Full Text:PDF (318.1KB)

Qualitative Behaviors of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/03/20
Vol. E70-E  No. 3  pp. 165-168
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (254.5KB)

Monotone Sensitivity of a Class of MOS Digital Circuits
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/03/20
Vol. E70-E  No. 3  pp. 169-171
Type of Manuscript: LETTER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (176.6KB)

Sufficient Conditions for a Generalized Waveform Relaxation to Converge Locally
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/02/20
Vol. E70-E  No. 2  pp. 106-109
Type of Manuscript: PAPER
Category: General
Keyword: 
  Summary |  Full Text:PDF (322.8KB)

Sufficient Conditions for Iterated Timing Analysis to Converge Locally
Kiichi URAHAMA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1986/12/20
Vol. E69-E  No. 12  pp. 1289-1293
Type of Manuscript: PAPER
Category: Circuit Theory
Keyword: 
  Summary |  Full Text:PDF (354.2KB)