Robotics and Computer Vision Lab

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International Journal
2009.09.16 19:39

Perceived Illumination Measured

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저 자 Changyeong Kim, S. Petrov, Seo Yang-Seok, In So Kweon
학 회 Color Research and Application
논문일시(Year) 1998
논문일시(Month) 01
Vol. 23, No. 3, pp. 159-168

We consider a method of measurement of apparent illumination using the perceptual phenomenon of fluorescence to which we give a psychophysical explanation based on the hypothesis of direct relation of perception of self-luminosity to the apparent illumination of the scene observed by the viewer. We report results of three experimental studies: (1) measurements of apparent illumination when a flat mondrian in the darkness is observed; (2) measurements of apparent illumination in a ‘‘rich’’ 3D scene; (3) testing linearity of the subjective illumination space. Based on the obtained data, we confirm the basic hypothesis of a relation between the self luminosity phenomenon and the perceived illumination, and show that the suggested method of measurement of apparent illumination gives reliable and accurate (errors were in the range 4–10%) values of its chromatic components. Apparent illumination in the case of a mondrian observed in the darkness is found unstable, which can be expected given that the context of such a scene is insufficient for obtaining a unique solution for all the components of the photometric problem. In the second experiment, we show that the measurement results remain constant when the context of a ‘‘rich’’ 3D scene is changed and that they follow the changes in illumination conditions.
In the third experiment, we study the composition of different illuminations and show that the simple relation f = f1 + f2 holds for the measurement of the illumination ( f ) when two other illuminations ( f1 , f2 ) are applied simultaneously.

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
» Perceived Illumination Measured
Changyeong Kim, S. Petrov, Seo Yang-Seok, In So Kweon
Color Research and Application 1998 / 01
11. 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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