Shadow detection using a physical basis

P.J. Withagen, F.C.A. Groen, K. Schutte
2008 2008 IEEE Instrumentation and Measurement Technology Conference  
Shadow detection is an important aspect of foreground/background classification. Many techniques exist, most of them assuming that only the intensity changes under shadow. In this paper we show that in most practical indoor and outdoor situations there will also be a color shift. We propose an algorithm for estimating this color shift from the images, and using it to remove shadow pixels. The proposed algorithm is compared experimentally to an existing algorithm using real image sequences. Results show a significant improvement of performance.
doi:10.1109/imtc.2008.4547015 fatcat:cx5xq5aozbehpcn3maf2p3savq