Robotics and Computer Vision Lab

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저 자 Kyoungsig Roh, In So Kweon
학 회 Pattern Recognition
논문일시(Year) 1998
논문일시(Month) 05
Vol. 31, No. 4, pp. 441-455

This paper presents an efficient model-based recognition method to recognize 2-D objects and to obtain correspondences between models and scene boundaries with a subpixel positioning error.
As a shape signature for a contour, we propose a descriptor consisting of five-point invariants, which are used to index a hash table. Also, we propose a projective refinement as a verification method to compute exact correspondences between models and scene contour points. This method repeatedly computes projective transformation using a weighted pseudo inverse.
We present an error model for five-point invariants, which are used to define a similarity between two descriptors, to determine a searching bound in indexing, and to obtain the weights in the projective refinement.
In experiments using seriously distorted images of forty models, this method led to the recognition of planar curved objects. A transformation using the correspondence between the model and scene points on contours was also obtained.

List of Articles
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
15. A new calibration algorithm using known angles
Jongeun Ha, In So Kweon
Electronics Letters 2000 / 01
14. A Fast and stable snake algorithm for medical images
Dongjoong Kang, In So Kweon
Pattern Recognition Letters 1999 / 05
13. A fast and stable method for detecting and tracking medical organs in MRI sequences
Dongjoong Kang, Changyeong Kim, Seo Yang-Seok, In So Kweon
IEICE Transactions on Information and Systems 1999 / 02
12. Perceived Illumination Measured
Changyeong Kim, S. Petrov, Seo Yang-Seok, In So Kweon
Color Research and Application 1998 / 01
» 2-D object recognition using invariant contour descriptor and projective refinement
Kyoungsig Roh, In So Kweon
Pattern Recognition 1998 / 05
10. Map-based probabilistic reasoning to vehicle segmentation
Joonwoong Lee, In So Kweon
Pattern Recognition 1998 / 12
9. 2-D curved shape recognition using a local curve descriptor and projective refinement
Kyoungsig Roh, In So Kweon
IEICE Transactions on Information and Systems 1998 / 05
8. Illuminant direction and shape of a bump
Changyeong Kim, A.P.Petrov, Choh Heui-Keun, Seo Yang-Seock, In So Kweon
Journal of the Optical Society of America - A - Optics Image Science and Vision 1998 / 01
7. Extraction of line features in a noisy image
Joonwoong Lee, In So Kweon
Pattern Recognition 1997 / 06
6. Color and printer models for color halftoning
Changyeong Kim, In So Kweon
Journal of Electronic Imaging 1997 / 04
5. Image Point Matching by Triangulation
Joonwoong Lee, In So Kweon
Intelligent Automation and Soft Computing 1997 / 01
4. Group-based multi agent system configuration for mobile robot navigation
M. Watanabe, K. Onoguchi, Y. Kuno, In So Kweon
Japan Journal of Robot 1995 / 04
3. Extracting topographic terrain features from elevation maps
In So Kweon, T. Kanade
Computer Vision, Graphics and Image Understanding 1994 / 03
2. Sonar-based behaviors for behavior-based mobile robots
In So Kweon, K. Onoguchi, M. Watanabe
IEICE Transactions on Information and Systems 1993 / 04
1. High resolution terrain map from multiple sensor data
In So Kweon, T. Kanade
Special Issue on 3-D Vision of IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) 1992 / 02
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