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
35. 3D Target Recognition using Cooperative Feature Map Binding under Markov Chain Monte Carlo
Sungho Kim, In So Kweon
Pattern Recognition Letters 2006 / 05
34. An Effective 3D Target Recognition Imitating Robust Methods of Human Visual System
Sungho Kim, Gijeong Jang, In So Kweon
Pattern Analysis and Applications 2005 / 12
33. Geometric and algebraric constraints of projective concentric circles and their applications to camera calibration
Jun-sik Kim, Pirre Gurdjos, In So Kweon
IEEE Trans. on Pattern Analysis and Machine Intelligence 2005 / 04
32. Automatic model-based 3D object recognition by combining feature matching with tracking
Sungho Kim, In So Kweon
Machine Vision and Applications 2005 / 12
31. Combined model-based 3D object recognition
Sungho Kim, Gijeong Jang, Wangheon Lee, In So Kweon
International Journal of Pattern Recognition and Artificial Intelligence 2005 / 11
30. Voting-based Separation of Diffuse and Specular Pixels
Kukjin Yoon, In So Kweon
Electronics Letters 2004 / 09
29. Automatic edge detection using 3x3 ideal binary pixel patterns and fuzzy-based edge thresholding
Dongsu Kim, Wangheon Lee, In So Kweon
Pattern Recognition Letters 2004 / 10
28. Detecting cuts and dissolves through linear regression analysis
Seunghoon Han, In So Kweon
Electronics Letters 2003 / 10
27. Fast object recognition using dynamic programming from combination of salient line groups
Dongjoong Kang, Jongeun Ha, In So Kweon
Pattern Recognition 2003 / 01
26. COP : a new corner detector
Suncheol Bae, In So Kweon, Yoo Choong-Don
Pattern Recognition Letters 2002 / 09
25. 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
23. An edge-based algorithm for discontinuity adaptive color Image smoothing
Dongjoong Kang, In So Kweon
Pattern Recognition 2001 / 02
22. 3-D structure recovery and calibration under varying intrinsic parameters using known angles
Jongeun Ha, In So Kweon
Pattern Recognition 2001 / 02
21. Robust and direct estimation of 3-D motion and scene depth from stereo image sequences
Seongkee Park, In So Kweon
Pattern Recognition 2001 / 07
20. 3D object recognition using a new invariant relationship by single view
Kyoungsig Roh, In So Kweon
Pattern Recognition 2000 / 01
19. Hybrid hierarchiecal motion estimation under illumination variations
Youngsu Moon, In So Kweon
Electonics Letters 2000 / 03
18. Robust direct motion estimation considering discontinuity
Jongeun Ha, In So Kweon
Pattern Recognition Letters 2000 / 11
17. A novel stereo camera system by a biprism
Doohyun Lee, In So Kweon
IEEE Transactions on Robotics and Automation 2000 / 10
16. Self-localization of a mobile robot without camera calibration using projective invariants
Wangheon Lee, In So Kweon
Pattern Recognition Letters 2000 / 01
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