Kiichi Urahama

Publication Activity (10 Years)

Years Active: 1990-2019
Publications (10 Years): 14

Top Topics

Error Diffusion

Gradient Operators

Color Image Enhancement

Top Venues

IEICE Trans. Inf. Syst.

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

IEEE Signal Process. Lett.

Publications

An-shui Yu, Kenji Hara, Kohei Inoue, Kiichi Urahama
Foreground Enlargement of Spherical Images Using a Spring Model. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2) (2019)
Toru Hiraoka, Kiichi Urahama
Acceleration Using Upper and Lower Smoothing Filters for Generating Oil-Film-Like Images. IEICE Trans. Inf. Syst. (12) (2019)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Full-Reference Metric Adaptive Image Denoising. ICIP (2019)
Hengjun Yu, Kohei Inoue, Kenji Hara, Kiichi Urahama
Saturation improvement in hue-preserving color image enhancement without gamut problem. ICT Express 4 (3) (2018)
An-shui Yu, Kenji Hara, Kohei Inoue, Kiichi Urahama
Foreground Enlargement of Omnidirectional Images by Spherical Trigonometry. ICPR (2018)
Atsushi Morinaga, Kenji Hara, Kohei Inoue, Kiichi Urahama
Classification between natural and graphics images based on generalized Gaussian distributions. Inf. Process. Lett. 138 (2018)
Genki Ono, Kohei Inoue, Kenji Hara, Kiichi Urahama
Reversible data hiding using maximum and minimum filters for image interpolation. GCCE (2017)
Kohei Inoue, Kenji Hara, Kiichi Urahama
RGB Color Cube-Based Histogram Specification for Hue-Preserving Color Image Enhancement. J. Imaging 3 (3) (2017)
An-shui Yu, Kenji Hara, Kohei Inoue, Kiichi Urahama
Corner detection in fisheye images by modified Yin-Yang grid. IECON (2017)
Hengjun Yu, Kohei Inoue, Kenji Hara, Kiichi Urahama
Color Error Diffusion Based on Neugebauer Model. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2016)
Toru Hiraoka, Kiichi Urahama
Generation of Oil-Film-Like Images by Bilateral Infra-Envelope Filter. IEICE Trans. Inf. Syst. (6) (2016)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Reflectance spectra recovery with non-negativity constraints. ISPACS (2016)
Kohei Inoue, Kenji Hara, Kiichi Urahama
On Hue-Preserving Saturation Enhancement in Color Image Enhancement. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (3) (2015)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Gradient operators for feature extraction from omnidirectional panoramic images. Pattern Recognit. Lett. 54 (2015)
Zhongying Hu, Kiichi Urahama
Cartesian Resizing of Line Drawing Pictures for Pixel Line Arts. IEICE Trans. Inf. Syst. (4) (2014)
Lei Hang, Kohei Inoue, Kiichi Urahama
Inverse cross-bilateral filter for cross-sharpening of images. GCCE (2014)
Zihan Yu, Kiichi Urahama
Hue-Preserving Unsharp-Masking for Color Image Enhancement. IEICE Trans. Inf. Syst. (12) (2014)
Kenji Hara, Kohei Inoue, Kiichi Urahama
A Differentiable Approximation Approach to Contrast-Aware Image Fusion. IEEE Signal Process. Lett. 21 (6) (2014)
Zihan Yu, Kiichi Urahama
Iterative Method for Inverse Nonlinear Image Processing. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (2) (2014)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Generalized Mixture Ratio Based Blind Image Separation. IEEE Signal Process. Lett. 20 (8) (2013)
Kohei Inoue, Kenji Hara, Kiichi Urahama
A Hybrid Method for High Density Salt-and-Pepper Noise Removal. SITIS (2013)
Toru Hiraoka, Kiichi Urahama
Generation of Moire-Picture-Like Color Images by Bilateral Filter. IEICE Trans. Inf. Syst. (8) (2013)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Integral image-based error diffusion. PCS (2013)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Memory-Efficient Computation of High-Dimensional Integral Images. ACPR (2013)
Tao Wang, Zhongying Hu, Kiichi Urahama
Anisotropic Lp Poisson Disk Sampling for NPR Image with Adaptively Shaped Pieces. IEICE Trans. Inf. Syst. (6) (2013)
Kohei Inoue, Kenji Hara, Kiichi Urahama
A Unified View of Two-Dimensional Principal Component Analyses. SSPR/SPR (2012)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Resolving permutation ambiguity in correlation-based blind image separation. Pattern Recognit. Lett. 33 (5) (2012)
Kohei Inoue, Kiichi Urahama
Halftoning with Weighted Centroidal Voronoi Tessellations. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (6) (2012)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Symmetric generalized low rank approximations of matrices. ICASSP (2012)
Yu Qiu, Kiichi Urahama
Edge-Preserving Cross-Sharpening of Multi-Modal Images. IEICE Trans. Inf. Syst. (3) (2011)
Weiwei Du, Kiichi Urahama
Error-Correcting Semi-Supervised Pattern Recognition with Mode Filter on Graphs. J. Adv. Comput. Intell. Intell. Informatics 15 (9) (2011)
Yu Qiu, Zenggang Du, Kiichi Urahama
Graph-Spectral Filter for Removing Mixture of Gaussian and Random Impulsive Noise. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2011)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Non-iterative Symmetric Two-Dimensional Linear Discriminant Analysis. IEICE Trans. Inf. Syst. (4) (2011)
Yu Qiu, Kiichi Urahama
Denoising of Multi-Modal Images with PCA Self-Cross Bilateral Filter. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2010)
Weiwei Du, Kiichi Urahama
Error-correcting semi-supervised learning with mode-filter on graphs. ICCV Workshops (2009)
Chang Jian, Kohei Inoue, Kenji Hara, Kiichi Urahama
Fixed-Coefficient Iterative Bilateral Filters for Graph-Based Image Processing. PSIVT (2009)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Robust multilinear principal component analysis. ICCV (2009)
Weiwei Du, Kiichi Urahama
Enhanced Spectral Embedding with Semi-supervised Feature Selection. ICNC (1) (2009)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Separation of layers from images containing multiple reflections and transparency using cyclic permutation. ICASSP (2009)
Kohei Inoue, Kenji Hara, Kiichi Urahama
Robust Simultaneous Low Rank Approximation of Tensors. PSIVT (2009)
Weiwei Du, Kiichi Urahama
Natural Image Matting with Membership Propagation. IPSJ Trans. Comput. Vis. Appl. 1 (2009)
Weiwei Du, Kiichi Urahama
Semi-Supervised Spectral Mapping for Enhancing Separation between Classes. MVA (2009)
Kohei Inoue, Kiichi Urahama
Halftoning with minimum spanning trees and its application to maze-like images. Comput. Graph. 33 (5) (2009)
Kohei Inoue, Kiichi Urahama
-Mode Singular Vector Selection in Higher-Order Singular Value Decomposition. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (11) (2008)
Kenji Hara, Ryo Kurazume, Kohei Inoue, Kiichi Urahama
Segmentation of Images on Polar Coordinate Meshes. ICIP (2) (2007)
Weiwei Du, Kiichi Urahama
Semi-Supervised Classification with Spectral Subspace Projection of Data. IEICE Trans. Inf. Syst. (1) (2007)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Automated separation of reflections from a single image based on edge classification. VISAPP (1) (2007)
Weiwei Du, Kiichi Urahama
Unsupervised and Semi-Supervised Graph-Spectral Algorithms for Robust Extraction of Arbitrarily Shaped Fuzzy Clusters. J. Adv. Comput. Intell. Intell. Informatics 11 (6) (2007)
Weiwei Du, Kiichi Urahama
Image and Video Matting with Membership Propagation. ACCV (2) (2007)
Weiwei Du, Kiichi Urahama
Semi-Supervised Classification with Spectral Projection of Multiplicatively Modulated Similarity Data. IEICE Trans. Inf. Syst. (9) (2007)
Weiwei Du, Kiichi Urahama
Semi-Supervised Pattern Classification Utilizing Fuzzy Clustering and Nonlinear Mapping of Data. J. Adv. Comput. Intell. Intell. Informatics 11 (9) (2007)
Kohei Inoue, Kiichi Urahama
Hierarchically Distributed Dynamic Mean Shift. ICIP (1) (2007)
Weiwei Du, Kohei Inoue, Kiichi Urahama
Unsupervised and Semi-Supervised Extraction of Clusters from Hypergraphs. IEICE Trans. Inf. Syst. (7) (2006)
Kohei Inoue, Kiichi Urahama
Equivalence of Non-Iterative Algorithms for Simultaneous Low Rank Approximations of Matrices. CVPR (1) (2006)
Kohei Inoue, Kiichi Urahama
Non-Iterative Two-Dimensional Linear Discriminant Analysis. ICPR (2) (2006)
Kenji Hara, Kohei Inoue, Kiichi Urahama
Adaptive Image Translation for Painterly Rendering. MVA (2005)
Kohei Inoue, Kiichi Urahama
DSVD: a tensor-based image compression and recognition method. ISCAS (6) (2005)
Weiwei Du, Kohei Inoue, Kiichi Urahama
Robust Kernel Fuzzy Clustering. FSKD (1) (2005)
Linlin Jing, Kohei Inoue, Kiichi Urahama
An NPR Technique for Pointillistic and Mosaic Images with Impressionist Color Arrangement. ISVC (2005)
Weiwei Du, Kohei Inoue, Kiichi Urahama
Dimensionality Reduction for Semi-supervised Face Recognition. FSKD (2) (2005)
Kohei Inoue, Kiichi Urahama
Robust Fuzzy Clustering Based on Similarity between Data. J. Adv. Comput. Intell. Intell. Informatics 8 (2) (2004)
Kohei Inoue, Kiichi Urahama
Continuous Optimization for Item Selection in Collaborative Filtering. IEICE Trans. Inf. Syst. (7) (2004)
Kohei Inoue, Kiichi Urahama
Recognition and Retrieval of Face Images by Semi-supervised Learning. PCM (2) (2004)
Kohei Inoue, Kiichi Urahama
Separation of Multiple Objects in Motion Images by Clustering. ICCV (2001)
Kohei Inoue, Kiichi Urahama
Context propagation based on membership feedback. Systems and Computers in Japan 32 (1) (2001)
Kohei Inoue, Kiichi Urahama
Image Retrieval With Multi-Stage Filtering In Low Dimensions. ICME (2001)
Seiji Hotta, Kohei Inoue, Kiichi Urahama
Extraction of Fuzzy Clusters from Weighted Graphs. PAKDD (2000)
Kohei Inoue, Kiichi Urahama
Learning of view-invariant pattern recognizer with temporal context. Pattern Recognit. 33 (10) (2000)
Kohei Inoue, Kiichi Urahama
Sequential fuzzy cluster extraction by a graph spectral method. Pattern Recognit. Lett. 20 (7) (1999)
Hiroyuki Matsunaga, Kiichi Urahama
Unsupervised learning algorithms for multimodal pattern classifiers. Systems and Computers in Japan 30 (8) (1999)
Hiroyuki Matsunaga, Kiichi Urahama
Restoration and segmentation of images by using binding processes. Systems and Computers in Japan 29 (4) (1998)
Yoshihiro Kitaoka, Kiichi Urahama
Monochromatic Visualization of Multimodal Images by Projection Pursuit. ICONIP (1998)
Kiichi Urahama, Hiroshi Nishiyuki
Performance of the Relaxation Algorithm for Maximum-Cut Problems. J. Circuits Syst. Comput. 6 (4) (1996)
Kiichi Urahama
Gradient Projection Network: Analog Solver for Linearly Constrained Nonlinear Programming. Neural Comput. 8 (5) (1996)
Kiichi Urahama, Yasuhiro Furukawa
Gradient descent learning of nearest neighbor classifiers with outlier rejection. Pattern Recognit. 28 (5) (1995)
Kiichi Urahama, Takeshi Nagao
K-winners-take-all circuit with O(N) complexity. IEEE Trans. Neural Networks 6 (3) (1995)
Kiichi Urahama
Equivalence between some dynamical systems for optimization. Neural Process. Lett. 1 (2) (1994)
Kiichi Urahama, Takeshi Nagao
Analog circuit implementation and learning algorithm for nearest neighbor classifiers. Pattern Recognit. Lett. 15 (7) (1994)
Kiichi Urahama, Tadashi Yamada
Constrained Potts Mean Field Systems and Their Electronic Implementation. Int. J. Neural Syst. 5 (3) (1994)
Kiichi Urahama
A neural algorithm incorporating winner-take-all subnets for combinatorial optimization. Systems and Computers in Japan 24 (6) (1993)
Kiichi Urahama, Shin-Ichiro Ueno
A Gradient System Solution To Potts Mean Field Equations And Its Electronic Implementation. Int. J. Neural Syst. 4 (1) (1993)
Kiichi Urahama
Performance of Neural Algorithms for Maximum-Cut Problems. J. Circuits Syst. Comput. 2 (4) (1992)
Kiichi Urahama
Stability of neural networks and convergence of their sensitivity computation algorithms. Systems and Computers in Japan 21 (8) (1990)