Experiments in sensor sharpening for color constancy

Kobus Barnard, Brian Funt

Research output: Contribution to conferencePaper

14 Scopus citations

Abstract

Sensor sharpening has been proposed as a method for improving color constancy algorithms but it has not been tested in the context of real color constancy algorithms. In this paper we test sensor sharpening as a method for improving color constancy algorithms in the case of three different cameras, the human cone sensitivity estimates, and the XYZ response curves. We find that when the sensors are already relatively sharp, sensor sharpening does not offer much improvement and can have a detrimental effect However, when the sensors are less sharp, sharpening can have a substantive positive effect. The degree of improvement is heavily dependent on the particular color constancy algorithm. Thus we conclude that using sensor sharpening for improving color constancy can offer a significant benefit, but its use needs to be evaluated with respect to both the sensors and the algorithm.

Original languageEnglish (US)
Pages43-46
Number of pages4
StatePublished - Dec 1 1998
Externally publishedYes
EventFinal Program and Proceedings of the 6th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications - Scottsdale, AZ, United States
Duration: Nov 17 1998Nov 20 1998

Other

OtherFinal Program and Proceedings of the 6th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications
CountryUnited States
CityScottsdale, AZ
Period11/17/9811/20/98

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ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition

Cite this

Barnard, K., & Funt, B. (1998). Experiments in sensor sharpening for color constancy. 43-46. Paper presented at Final Program and Proceedings of the 6th IS and T/SID Color Imaging Conference: Color Science, Systems and Applications, Scottsdale, AZ, United States.