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
185. Pose Estimation of Unmanned Aerial Vehicle by Catadioptric Vision
Jean-Charles Bazin, In So Kweon
the 13th IEEE Korea-Japan Joint Workshop on Frontiers of Computer Vision (FCV ‘07) 2007 / 02
184. UAV Attitude Estimation by Vanishing Points in Catadioptric Images
Jean-Charles Bazin, In So Kweon, Cedric Demonceaux, Pascal Vasseur
IEEE International Conference on Robotics and Automation (ICRA’08) 2008 / 05
183. [Book] Object Identification and Categorization with Visual Context
Sungho Kim, In So Kweon
KAIST 2008 / 05
182. Hierarchical Graphical Model-based Methods for Object Identification and Categorization with Visual Context
Sungho Kim
KAIST 2007 / 02
181. Metric reconstruction from images using rank-deficient relations
Jun-sik Kim
KAIST 2006 / 02
180. Robust Correspondence Search under Photometric Variations and Image Ambiguity
Kukjin Yoon
KAIST 2006 / 02
179. Catadioptric vision based localization and mapping for indoor mobile robot
Gijeong Jang
KAIST 2005 / 08
178. Appearance-cloning : Photo-consistent 3D modeling from multi-view images
Howon Kim
KAIST 2004 / 08
177. Shot Detection and Temporal Interest Point for Event-based Clustering and its Application to Golf Videos
Seunghoon Han
KAIST 2004 / 08
176. High-speed automatic edge detection using pixel group statistics and fuzzy-based automatic thresholding
Dongsu Kim
KAIST 2003 / 02
175. Image-based Visual Servoing for Linear Path Control
Jaeseung Cho
KAIST 2002 / 08
174. Chromatic invariant based image retrieval for three dimensional objects
Jiyeun Kim
KAIST 2002 / 02
173. Mobile robot navigation using fuzzy based sensor fusion
Wangheon Lee
KAIST 2001 / 08
172. Robust and direct estimation of camera motion and 3-D structure from stereo image sequence
Seongkee Park
KAIST 2000 / 08
171. A biprism stereo camera system
Doohyun Lee
KAIST 2000 / 08
170. Rectangle Extraction in Catadioptric Images
Jean-Charles Bazin, In So Kweon, Cedric Demonceaux, Pascal Vasseur
(OMNIVIS ‘07) in conjunction with ICCV’07 2007 / 10
169. Robust motion estimation and statistical change detection in image sequences under time-varying illumination
Youngsu Moon
KAIST 2000 / 08
168. 3D structure recovery and motion segmentation using uncalibrated cameras
Jongeun Ha
KAIST 2000 / 02
167. Optimization-based approaches in computer vision
Dongjoong Kang
KAIST 1999 / 02
166. A chromatic color constancy model for three dimensional objects based on human visual and illuminant perception
Changyeong Kim
KAIST 1998 / 08
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