Shadow identification using colour ratios

Kobus Barnard, Graham Finlayson

Research output: Contribution to conferencePaper

48 Scopus citations

Abstract

In this paper we present a comprehensive method for identifying probable shadow regions in an image. Doing so is relevant to computer vision, colour constancy, and image reproduction, specifically dynamic range compression. Our method begins with a segmentation of the image into regions of the same colour. Then the edges between the regions are analyzed with respect to the possibility that each is due to an illumination change as opposed to a material boundary. We then integrate the edge information to produce an estimate of the illumination field.

Original languageEnglish (US)
Pages97-101
Number of pages5
StatePublished - Dec 1 2000
Externally publishedYes
EventFinal Program and Proceedings of the 8th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications - Scottsdale, AZ, United States
Duration: Nov 7 2000Nov 10 2000

Other

OtherFinal Program and Proceedings of the 8th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications
CountryUnited States
CityScottsdale, AZ
Period11/7/0011/10/00

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition

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  • Cite this

    Barnard, K., & Finlayson, G. (2000). Shadow identification using colour ratios. 97-101. Paper presented at Final Program and Proceedings of the 8th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications, Scottsdale, AZ, United States.