Sensor sharpening for computational color constancy
نویسندگان
چکیده
منابع مشابه
Sensor sharpening for computational color constancy.
Sensor sharpening [J. Opt. Soc. Am. A 11, 1553 (1994)] has been proposed as a method for improving computational color constancy, but it has not been thoroughly tested in practice with existing color constancy algorithms. In this paper we study sensor sharpening in the context of viable color constancy processing, both theoretically and empirically, and on four different cameras. Our experiment...
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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 ...
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We develop sensor transformations, collectively called spectral sharpening, that convert a given set of sensor sensitivity functions into a new set that will improve the performance of any color-constancy algorithm that is based on an independent adjustment of the sensor response channels. Independent adjustment of multiplicative coefficients corresponds to the application of a diagonal-matrix ...
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It has now been 20 years since the seminal work by Finlayson et al. on the use of spectral sharpening of sensors to achieve diagonal color constancy. Spectral sharpening is still used today by numerous researchers for different goals unrelated to the original goal of diagonal color constancy e.g., multispectral processing, shadow removal, location of unique hues. This paper reviews the idea of ...
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Computational color constancy aims to estimate the actual color in an acquired scene disregarding its illuminant. Several strategies have been proposed in the last few years. In general these require some information about the camera being used, or exploit the statistical properties of the expected illuminants and surface reflectances. From a computational perspective, once the illuminant has b...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 2001
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.18.002728