Masakazu IWAMURA


Improvements of Memory Efficiency and Discrimination Power for Real-Time Document Image Retrieval on a Large-Scale Database
Kazutaka TAKEDA  Koichi KISE  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2012/07/01
Vol. J95-D  No. 7  pp. 1491-1494
Type of Manuscript: LETTER
Category: 
Keyword: 
document image retrievalreal-time processingmemory reductionfeature selectionLLAH
  Summary |  Full Text(in Japanese):PDF (695KB)

Robust and Efficient Recognition of Low Quality Images by Increasing Reference Feature Vectors
Koichi KISE  Kazuto NOGUCHI  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2010/08/01
Vol. J93-D  No. 8  pp. 1353-1363
Type of Manuscript: Special Section PAPER (Special Section on Image Recognition and Understanding)
Category: 
Keyword: 
specific object recognitionlocal featuregenerative learningcascadelow-quality image
  Summary |  Full Text(in Japanese):PDF (808.4KB)

A General Assignment of Supplementary Information
Masakazu IWAMURA  Yoshio FURUYA  Koichi KISE  Shinichiro OMACHI  Seiichi UCHIDA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2010/05/01
Vol. J93-D  No. 5  pp. 579-587
Type of Manuscript: PAPER
Category: 
Keyword: 
bayes errorassignment of fallible supplementary informationsteepest descent methodnormal distributionMahalanobis distance
  Summary |  Full Text(in Japanese):PDF (699.5KB)

Analysis on Image Retrieval Method Based on Arrangements of Feature Points -- Comparison of Geometric Hashing and LLAH --
Masakazu IWAMURA  Tomohiro NAKAI  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2010/04/01
Vol. J93-D  No. 4  pp. 494-501
Type of Manuscript: PAPER
Category: 
Keyword: 
geometric hashingLLAHretrieval accuracyprocessing timememory amount
  Summary |  Full Text(in Japanese):PDF (381.7KB)

Reconstruction of Handwritings via Pen-Tip Camera Images
Seiichi UCHIDA  Katsuhiro ITO  Masakazu IWAMURA  Shinichiro OMACHI  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2010/01/01
Vol. J93-D  No. 1  pp. 64-67
Type of Manuscript: LETTER
Category: 
Keyword: 
video mosaicinghandwritingSURFRANSACpaper fingerprint
  Summary |  Full Text(in Japanese):PDF (566.1KB)

Efficient Recognition of Specific Objects by Cascading Approximate Nearest Neighbor Searchers
Kazuto NOGUCHI  Koichi KISE  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2009/12/01
Vol. J92-D  No. 12  pp. 2238-2248
Type of Manuscript: PAPER
Category: 
Keyword: 
object recognitionPCA-SIFTapproximate nearest neighbor searchcascadereject
  Summary |  Full Text(in Japanese):PDF (1003.5KB)

Experimental Evaluation of Balancing the Recognition Rate, Processing Time and Memory Requirement for Large-Scale Recognition of Specific Objects
Kazuto NOGUCHI  Koichi KISE  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2009/08/01
Vol. J92-D  No. 8  pp. 1135-1143
Type of Manuscript: Special Section PAPER (Special Section on Image Recognition and Understanding)
Category: 
Keyword: 
object recognitionlocal featuresapproximate nearest neighbor searchhash tablescalar quantization
  Summary |  Full Text(in Japanese):PDF (480.3KB)

Document Skew Estimation by Instance-Based Learning
Seiichi UCHIDA  Megumi SAKAI  Masakazu IWAMURA  Shinichiro OMACHI  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2008/01/01
Vol. J91-D  No. 1  pp. 136-138
Type of Manuscript: LETTER
Category: 
Keyword: 
document imageskew estimationinstance-based learning
  Summary |  Full Text(in Japanese):PDF (213.8KB)

Supplementary Information Embedment with Area Ratio for Camera-Based Character Recognition
Shinichiro OMACHI  Masakazu IWAMURA  Seiichi UCHIDA  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2007/12/01
Vol. J90-D  No. 12  pp. 3246-3256
Type of Manuscript: PAPER
Category: 
Keyword: 
camera-based character recognitioninformation embedmentsupplementary informationaffine invariantsarea ratio
  Summary |  Full Text(in Japanese):PDF (642.1KB)

Real-Time Document Image Retrieval Using a Web Camera
Tomohiro NAKAI  Koichi KISE  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2007/08/01
Vol. J90-D  No. 8  pp. 2262-2265
Type of Manuscript: Special Section LETTER (Special Section on Image Recognition and Understanding)
Category: 
Keyword: 
document image retrievalreal-time processingWeb camera
  Summary |  Full Text(in Japanese):PDF (416.4KB)

FSA-Guided Optimal Segmentation and Its Application to Camera-Based Character Recognition
Seiichi UCHIDA  Megumi SAKAI  Masakazu IWAMURA  Shinichiro OMACHI  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2007/08/01
Vol. J90-D  No. 8  pp. 1966-1976
Type of Manuscript: Special Section PAPER (Special Section on Image Recognition and Understanding)
Category: 
Keyword: 
segmentationboundary detectionfinite state automatondynamic programmingcamera-based character recognitioninformation embedding
  Summary |  Full Text(in Japanese):PDF (527.4KB)

Pattern Recognition with Supplementary Information
Masakazu IWAMURA  Seiichi UCHIDA  Shinichiro OMACHI  Koichi KISE 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2007/02/01
Vol. J90-D  No. 2  pp. 460-470
Type of Manuscript: PAPER
Category: 
Keyword: 
discriminatorquantity of informationconfusion matrixsupplementary information
  Summary |  Full Text(in Japanese):PDF (1.2MB)

Fast Deformable Template Matching for Isolated Character Recognition
Kazuya NEGISHI  Masakazu IWAMURA  Shinichiro OMACHI  Hirotomo ASO 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2007/02/01
Vol. J90-D  No. 2  pp. 503-513
Type of Manuscript: PAPER
Category: 
Keyword: 
isolated charactertouching characterscene imagesdefomation of character imagestemplate matching
  Summary |  Full Text(in Japanese):PDF (1.2MB)

Fast Camera-Based Document Image Retrieval Using Local Arrangements of Feature Points
Tomohiro NAKAI  Koichi KISE  Masakazu IWAMURA 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2006/09/01
Vol. J89-D  No. 9  pp. 2045-2054
Type of Manuscript: PAPER
Category: 
Keyword: 
document image retrievaldigital cameracross-ratiohashingvoting
  Summary |  Full Text(in Japanese):PDF (800.3KB)