Yuji IWAHORI


Robust Method for Recovering Sign of Gaussian Curvature from Multiple Shading Images
Shinji FUKUI Yuji IWAHORI Robert J. WOODHAM Kenji FUNAHASHI Akira IWATA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2001/12/01
Vol. E84-D  No. 12  pp. 1633-1641
Type of Manuscript:  Special Section PAPER (Special Issue on Machine Vision Applications)
Category: 
Keyword: 
Gaussian curvatureshape representation and recoveryphysics-based visionprincipal component analysis
 Summary | Full Text:PDF(3.7MB)

Enhanced Look-Ahead Scheduling Technique to Overlap Communication with Computation
Dingchao LI Yuji IWAHORI Tatsuya HAYASHI Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/11/25
Vol. E81-D  No. 11  pp. 1205-1212
Type of Manuscript:  PAPER
Category: Sofware System
Keyword: 
parallelizing compilersinterprocessor communicationprogram optimizationcompile-time scheduling heuristicsdirected acyclic graphs
 Summary | Full Text:PDF(742.3KB)

Classification of Surface Curvature from Shading Images Using Neural Network
Yuji IWAHORI Shinji FUKUI Robert J. WOODHAM Akira IWATA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/08/25
Vol. E81-D  No. 8  pp. 889-900
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
shape representation and recoveryphysics-based visionphotometric stereoradial basis function neural networkcurvature
 Summary | Full Text:PDF(1.2MB)

Accuracy of the Minimum Time Estimate for Programs on Heterogeneous Machines
Dingchao LI Yuji IWAHORI Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/01/25
Vol. E81-D  No. 1  pp. 19-26
Type of Manuscript:  PAPER
Category: Computer Systems
Keyword: 
parallel processingheterogeneous machines compile-time schedulingdirected acyclic graphslower time bounds
 Summary | Full Text:PDF(752.8KB)

Neural Network Based Photometric Stereo with a Nearby Rotational Moving Light Source
Yuji IWAHORI Robert J. WOODHAM Masahiro OZAKI Hidekazu TANAKA Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/09/25
Vol. E80-D  No. 9  pp. 948-957
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
photometric stereoneural networkprincipal components analysiscast shadowsinter-reflection
 Summary | Full Text:PDF(900.1KB)

A Lookahead Heuristic for Heterogeneous Multiprocessor Scheduling with Communication Costs
Dingchao LI Akira MIZUNO Yuji IWAHORI Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/04/25
Vol. E80-D  No. 4  pp. 489-494
Type of Manuscript:  Special Section PAPER (Special Issue on Parallel and Distributed Supercomputing)
Category: 
Keyword: 
parallel processingheterogeneous multiprocessorstask graphscommunication costsscheduling heuristics
 Summary | Full Text:PDF(567.4KB)

Moving Point Light Source Photometric Stereo
Yuji IWAHORI Robert J. WOODHAM Hidekazu TANAKA Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1994/08/25
Vol. E77-D  No. 8  pp. 925-929
Type of Manuscript:  LETTER
Category: Image Processing, Computer Graphics and Pattern Recognition
Keyword: 
shape from shadingphotometric stereoLambertian reflectance
 Summary | Full Text:PDF(273.1KB)

Photometric Stereo for Specular Surface Shape Based on Neural Network
Yuji IWAHORI Hidekazu TANAKA Robert J. WOODHAM Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1994/04/25
Vol. E77-D  No. 4  pp. 498-506
Type of Manuscript:  Special Section PAPER (Special Issue on Neurocomputing)
Category: Image Processing
Keyword: 
neural networkcomputer visionshape from shadingphotometric stereoPhong reflectance function
 Summary | Full Text:PDF(815.6KB)

Extraction of Feature Attentive Regions in a Learnt Neural Network
Hideki SANO Atsuhiro NADA Yuji IWAHORI Naohiro ISHII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1994/04/25
Vol. E77-D  No. 4  pp. 482-489
Type of Manuscript:  Special Section PAPER (Special Issue on Neurocomputing)
Category: Image Processing
Keyword: 
neural networkdegree of dependencepattern classification
 Summary | Full Text:PDF(704.4KB)

Shape Reconstruction of Object from an Image under a Point Light Source Illumination
Yuji IWAHORI Hidezumi SUGIE Hiroyuki KAMEI Shoichiro YAMAGUCHI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/07/25
Vol. E72-E  No. 7  pp. 852-862
Type of Manuscript:  PAPER
Category: Image Processing, Computer Graphics and Pattern Recognition
Keyword: 
 Summary | Full Text:PDF(766.5KB)