Effective moving cast shadow detection for monocular color image sequences

George S.K. Fung, Nelson H.C. Yung, Grantham K.H. Pang, Andrew H.S. Lai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For an accurate scene analysis in monocular image sequences, a robust segmentation of a moving object from the static background is generally required. However, the existence of moving cast shadow may lead to an inaccurate object segmentation, and as a result, lead to further erroneous scene analysis. An effective detection of moving cast shadow in monocular color image sequences is developed. Firstly, by realizing the various characteristics of shadow in luminance, chrominance, and gradient density, an indicator, called shadow confidence score, of the probability of the region classified as cast shadow is calculated. Secondly the canny edge detector is employed to detect edge pixels in the detected region. These pixels are then bounded by their convex hull, which estimates the position of the object. Lastly, by analyzing the shadow confidence score and the bounding hull, the cast shadow is identified as those regions outside the bounding hull and with high shadow confidence score. A number of typical outdoor scenes are evaluated and it is shown that our method can effectively detect the associated cast shadow from the object of interest.

Original languageEnglish (US)
Title of host publicationProceedings - 11th International Conference on Image Analysis and Processing, ICIAP 2001
PublisherIEEE Computer Society
Pages404-409
Number of pages6
ISBN (Print)076951183X, 9780769511832
DOIs
StatePublished - Jan 1 2001
Event11th International Conference on Image Analysis and Processing, ICIAP 2001 - Palermo, Italy
Duration: Sep 26 2001Sep 28 2001

Publication series

NameProceedings - 11th International Conference on Image Analysis and Processing, ICIAP 2001

Other

Other11th International Conference on Image Analysis and Processing, ICIAP 2001
CountryItaly
CityPalermo
Period9/26/019/28/01

    Fingerprint

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition

Cite this

Fung, G. S. K., Yung, N. H. C., Pang, G. K. H., & Lai, A. H. S. (2001). Effective moving cast shadow detection for monocular color image sequences. In Proceedings - 11th International Conference on Image Analysis and Processing, ICIAP 2001 (pp. 404-409). [957043] (Proceedings - 11th International Conference on Image Analysis and Processing, ICIAP 2001). IEEE Computer Society. https://doi.org/10.1109/ICIAP.2001.957043