Naoya OHTA


Speeding Up and Performance Evaluation of a Fully Automatic Radial Distortion Compensation Algorithm for Driving Assistance Cameras
Yuta KANUKI Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/10/01
Vol. E98-D  No. 10  pp. 1892-1895
Type of Manuscript:  LETTER
Category: Image Recognition, Computer Vision
Keyword: 
radial distortiondriving cameraswide angle camerashistogram of oriented gradiententropy
 Summary | Full Text:PDF(725.4KB)

Fuzzy Multiple Subspace Fitting for Anomaly Detection
Raissa RELATOR Tsuyoshi KATO Takuma TOMARU Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/10/01
Vol. E97-D  No. 10  pp. 2730-2738
Type of Manuscript:  PAPER
Category: Artificial Intelligence, Data Mining
Keyword: 
fuzzy algorithmsubspace fittingkernel vector subspacekernel affine subspaceanomaly detection
 Summary | Full Text:PDF(954.2KB)

How Much Does Color Information Help Optical Flow Computation?
Naoya OHTA Satoe NISHIZAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/05/01
Vol. E89-D  No. 5  pp. 1759-1762
Type of Manuscript:  LETTER
Category: Image Recognition, Computer Vision
Keyword: 
color imageRGB imageoptical flowimage gradient
 Summary | Full Text:PDF(404.7KB)

Optimal Homography Computation with a Reliability Measure
Kenichi KANATANI Naoya OHTA Yasushi KANAZAWA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/07/25
Vol. E83-D  No. 7  pp. 1369-1374
Type of Manuscript:  Special Section PAPER (Special Issue on Machine Vision Applications)
Category: 
Keyword: 
homographyimage mosaicingreliability evaluationrenormalizationtheoretical accuracy bound
 Summary | Full Text:PDF(3MB)

Optimal Robot Self-Localization and Accuracy Bounds
Kenichi KANATANI Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/02/25
Vol. E82-D  No. 2  pp. 447-452
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
mobile robotimage sensingself-localizationstatistical estimationtheoretical accuracy boundbootstrap
 Summary | Full Text:PDF(284.6KB)

Optimal Estimation of Three-Dimensional Rotation and Reliability Evaluation
Naoya OHTA Kenichi KANATANI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/11/25
Vol. E81-D  No. 11  pp. 1247-1252
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
3-D rotationstatistical inferencetheoretical accuracy boundrenormalizationstereo vision bootstrap
 Summary | Full Text:PDF(740KB)

Automatic Recognition of Regular Figures by Geometric AIC
Iman TRIONO Naoya OHTA Kenichi KANATANI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/02/25
Vol. E81-D  No. 2  pp. 246-248
Type of Manuscript:  LETTER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
geometric AIC model selection CADgraphics interfacepattern recognition
 Summary | Full Text:PDF(202.9KB)

Moving Object Detection from Optical Flow without Empirical Thresholds
Naoya OHTA Kenichi KANATANI Kazuhiro KIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/02/25
Vol. E81-D  No. 2  pp. 243-245
Type of Manuscript:  LETTER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
geometric AICmodel selectionoptical flowmoving object detectionstatistical inference
 Summary | Full Text:PDF(279KB)

Uncertainty Models of the Gradient Constraint for Optical Flow Computation
Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/07/25
Vol. E79-D  No. 7  pp. 958-964
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
optical flowgradient constraintnoise modelprobability modelleast squaresmaximum likelihood criterion
 Summary | Full Text:PDF(691.4KB)

Optical Flow Detection Using a General Noise Model
Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/07/25
Vol. E79-D  No. 7  pp. 951-957
Type of Manuscript:  PAPER
Category: Image Processing,Computer Graphics and Pattern Recognition
Keyword: 
image motionmaximum likelihood estimationleast-squares criterioncovariance matrixgeneralized eigenvaluesderivative kernels
 Summary | Full Text:PDF(533.5KB)

Optimal Structure-from-Motion Algorithm for Optical Flow
Naoya OHTA Kenichi KANATANI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1995/12/25
Vol. E78-D  No. 12  pp. 1559-1566
Type of Manuscript:  Special Section PAPER (Special Issue on Machine Vision Applications)
Category: 
Keyword: 
optical flowmotion parameterdepth mapmaximum likelihood estimationrenormalization
 Summary | Full Text:PDF(584.2KB)

Image Movement Detection with Reliability Indices
Naoya OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1991/10/25
Vol. E74-D  No. 10  pp. 3379-3388
Type of Manuscript:  Special Section PAPER (Special Issue on Computer Vision and Its Applications)
Category: 
Keyword: 
 Summary | Full Text:PDF(1.6MB)