Toshiya NAKAGUCHI


On the Security of BioEncoding Based Cancelable Biometrics
Osama OUDA  Norimichi TSUMURA  Toshiya NAKAGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/09/01
Vol. E94-D  No. 9  pp. 1768-1777
Type of Manuscript: PAPER
Category: Information Network
Keyword: 
template protectioncancelable biometricsBioEncodingcorrelation attacksoptimization based attacks
  Summary |  Full Text:PDF (4.1MB)

Psychological Effects of Ambient Illumination Control and Illumination Layout While Viewing Various Video Images
Takuya IWANAMI  Ayano KIKUCHI  Keita HIRAI  Toshiya NAKAGUCHI  Norimichi TSUMURA  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 493-499
Type of Manuscript: Special Section PAPER (Special Section on Image Media Quality)
Category: Vision
Keyword: 
display deviceilluminationsubjective evaluationsemantic differential (SD) methodfactor analysis
  Summary |  Full Text:PDF (1.7MB)

BioEncoding: A Reliable Tokenless Cancelable Biometrics Scheme for Protecting IrisCodes
Osama OUDA  Norimichi TSUMURA  Toshiya NAKAGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/07/01
Vol. E93-D  No. 7  pp. 1878-1888
Type of Manuscript: PAPER
Category: Information Network
Keyword: 
biometric authenticationbiometric encryptioncancelable biometricsBioEncodingBioHashingIrisCode
  Summary |  Full Text:PDF (1.9MB)

Video Quality Assessment Using Spatio-Velocity Contrast Sensitivity Function
Keita HIRAI  Jambal TUMURTOGOO  Ayano KIKUCHI  Norimichi TSUMURA  Toshiya NAKAGUCHI  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/05/01
Vol. E93-D  No. 5  pp. 1253-1262
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
Keyword: 
objective video quality assessmentspatio-velocity contrast sensitivity functionimage diffrencesubjective evaluationrank order correlation coefficient
  Summary |  Full Text:PDF (1.6MB)

A Model Optimization Approach to the Automatic Segmentation of Medical Images
Ahmed AFIFI  Toshiya NAKAGUCHI  Norimichi TSUMURA  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/04/01
Vol. E93-D  No. 4  pp. 882-890
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
model fittingimage segmentationkernel methodsparticle swarmshape priors
  Summary |  Full Text:PDF (7MB)

A Simple Method to Measure MTF of Paper and Its Application for Dot Gain Analysis
Masayuki UKISHIMA  Hitomi KANEKO  Toshiya NAKAGUCHI  Norimichi TSUMURA  Markku HAUTA-KASARI  Jussi PARKKINEN  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3328-3335
Type of Manuscript: Special Section PAPER (Special Section on Image Media Quality)
Category: Printing
Keyword: 
MTFpaperhalftone printdot gain
  Summary |  Full Text:PDF (955KB)

Adaptive Ambient Illumination Based on Color Harmony Model
Ayano KIKUCHI  Keita HIRAI  Toshiya NAKAGUCHI  Norimichi TSUMURA  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/12/01
Vol. E92-A  No. 12  pp. 3372-3375
Type of Manuscript: Special Section LETTER (Special Section on Image Media Quality)
Category: Color
Keyword: 
displayilluminationsubjective evaluationfactor analysiscolor harmony
  Summary |  Full Text:PDF (222.3KB)

A Fast Block Matching Algorithm Based on Motion Vector Correlation and Integral Projections
Mohamed GHONEIM  Norimichi TSUMURA  Toshiya NAKAGUCHI  Takashi YAHAGI  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/02/01
Vol. E92-D  No. 2  pp. 310-318
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
Keyword: 
video codingmotion estimationadaptive block matchingintegral projection
  Summary |  Full Text:PDF (1.9MB)

Evaluation of Image Corrected by Retinex Method Based on S-CIELAB and Gazing Information
Jie BAI  Toshiya NAKAGUCHI  Norimichi TSUMURA  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 2955-2961
Type of Manuscript: Special Section PAPER (Special Section on Image Media Quality)
Category: 
Keyword: 
Retinex methodS-CIELAB metricgazing frequencygazing area
  Summary |  Full Text:PDF (1.4MB)

Projector-Based Color Simulator for Print Industry
Shoji YAMAMOTO  Kumiko UEDA  Norimichi TSUMURA  Toshiya NAKAGUCHI  Yoichi MIYAKE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 2962-2969
Type of Manuscript: Special Section PAPER (Special Section on Image Media Quality)
Category: 
Keyword: 
digital color proofcolor simulatorprojectorspectral-based
  Summary |  Full Text:PDF (1.1MB)

Box Puzzling Problem Solver by Hysteresis Neural Networks
Toshiya NAKAGUCHI  Shinya ISOME  Kenya JIN'NO  Mamoru TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/09/01
Vol. E84-A  No. 9  pp. 2173-2181
Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and its Applications)
Category: Application of Neural Network
Keyword: 
nonlinear dynamicshysteresis neural networkscombinatorial optimization problemsconstraint satisfaction problemsbox puzzling problem
  Summary |  Full Text:PDF (1.1MB)

Hysteresis Neural Networks for N-Queens Problems
Toshiya NAKAGUCHI  Kenya JIN'NO  Mamoru TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/09/20
Vol. E82-A  No. 9  pp. 1851-1859
Type of Manuscript: Special Section PAPER (Special Section on Nonlinear Theory and Its Applications)
Category: 
Keyword: 
hysteresisneural networkcombinatorial optimization problemN-Queens problem
  Summary |  Full Text:PDF (762.5KB)