Robotics and Computer Vision Lab

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저 자 Jiyeun Kim, Changyeong Kim, Seo Yang-Seck, In So Kweon
학 회 Pattern Recognition
논문일시(Year) 2001
논문일시(Month) 06
Vol. 34, Issue 6, pp. 1189-1197

We present an e$cient indexing/matching algorithm that is independent of the changes in the illuminant color and the
geometric conditions for 3-D object with multiple colors. The color contents of an object can be represented bythe peak
coordinates in the chromaticityhistogram space corresponding to the distinct colors in an image. The visible color areas
and their relative sizes of the histograms maychange with viewing conditions, but the coordinates of local maxima
remain stable. However, a change in illumination color results in a deformation of the chromaticitydistribution so as to
degrade the performance of color recognition. In order to discount lighting change, we de"ne a chromatic invariant that
normalizes the chromaticities of the histogram peaks bythe norm of each channel. Therefore, the normalized coordinates
of the peaks are stable to the changes in illumination color, scaling, rotation, partial occlusion, viewing direction, and
deformation. Test results on a database of diverse images show that the chromatic invariant yields excellent recognition
rate even when the illuminant color and geometric conditions varysubstantially .

List of Articles
122. 카메라 보정에 사용되는 기하제한조건에 대한 통합프레임워크 (A Unified Framework of Geometric Constraints on Camera Calibration)
Jun-sik Kim, In So Kweon
18th Workshop on Image Processing and Image Understanding(IPIU) 2006 / 02
121. Image-based visual servoing using position and angle of image features
Jaeseung Cho, In So Kweon
Electronics Letters 2001 / 07
» Color indexing using chromatic invariant
Jiyeun Kim, Changyeong Kim, Seo Yang-Seck, In So Kweon
Pattern Recognition 2001 / 06
119. Stereo Matching with the Distinctive Similarity Measure
Kukjin Yoon, In So Kweon
IEEE International Conference on Computer Vision (ICCV) 2007 / 10
118. Separating Reflection Components using a Single Color Image
Kukjin Yoon, In So Kweon
18th Workshop on Image Processing and Image Understanding(IPIU) 2006 / 02
117. Motion Estimation using Centers of Non-Overlapping Cameras
Hyeongwoo Kim, Jun-sik Kim, In So Kweon
Proceedings of the 13th Japan-Korea Joint Workshop on Frontiers of Computer Vision (FCV) 2007 / 01
116. Simultaneous Place and Multiple Object Recognition using Particle-based Belief Propagation in Hierarchical Graphical Model
Sungho Kim, In So Kweon
19th Workshop on Image Processing and Image Understanding (IPIU) 2006 / 02
115. An edge-based algorithm for discontinuity adaptive color Image smoothing
Dongjoong Kang, In So Kweon
Pattern Recognition 2001 / 02
114. Visual Categorization Robust to Large Intra-Class Variations using Entropy-guided Codebook
Sungho Kim, In So Kweon
Proceedings of the IEEE International Conference on Robotics and Automation (ICRA) 2007 / 04
113. 3-D structure recovery and calibration under varying intrinsic parameters using known angles
Jongeun Ha, In So Kweon
Pattern Recognition 2001 / 02
112. Sensor noise modeling using the Skellam distribution: Application to the color edge detection
Youngbae Hwang, Jun-sik Kim, In So Kweon
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2007 / 06
111. Robust and direct estimation of 3-D motion and scene depth from stereo image sequences
Seongkee Park, In So Kweon
Pattern Recognition 2001 / 07
110. 상향식/하향식 정보를 결합한 효과적인 3D 자동물체인식 시스템
Wangheon Lee, Sungho Kim, 김인철, In So Kweon
한국군사과학기술학회 2004년 종합학술대회 2004 / 08
109. 3D object recognition using a new invariant relationship by single view
Kyoungsig Roh, In So Kweon
Pattern Recognition 2000 / 01
108. Modeling and target classification using multiple reflections of sonar
Wangheon Lee, Kukjin Yoon, In So Kweon
정보및 제어 학술대회 (CICS) 2003 / 11
107. Accurate Motion Estimation and High-Precision 3D Reconstruction by Sensor Fusion
Yunsu Bok, Youngbae Hwang, In So Kweon
Proceedings of the IEEE International Conference on Robotics and Automation (ICRA) 2007 / 04
106. Hybrid hierarchiecal motion estimation under illumination variations
Youngsu Moon, In So Kweon
Electonics Letters 2000 / 03
105. 인공표식과 자연표식을 결합한 강인한 자기위치추정
In So Kweon, Gijeong Jang, Sungho Kim, Wangheon Lee
한국정밀공학회(KSPE) 2003 춘계학술대회 2003 / 06
104. CALOS : Camera And Laser for Odometry Sensing
Yunsu Bok, Youngbae Hwang, In So Kweon
Proceedings of the 13th Japan-Korea Joint Workshop on Frontiers of Computer Vision (FCV) 2007 / 01
103. Probabilistic optimization for volumetric 3-D reconstruction
Howon Kim, In So Kweon
Human Computer Interaction(HCI) 2003 / 01
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