Estimating Reflectance Spectra from Tristimulus Values under Different Illuminations
نویسندگان
چکیده
منابع مشابه
Estimating Surface Reflectance Functions from Tristimulus Values
Information about the spectral reflectance of a color surface is useful in many applications. Assuming that reflectance functions can be adequately approximated by a linear combination of a small number of basis functions, we address here the recovery of a surface reflectance function, given the tristimulus values under one or more illuminants.
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Information about the spectral reflectance of a color surface is useful in many applications. Assuming that reflectance functions can be adequately approximated by a linear combination of a small number of basis functions and exploiting genetic algorithms, we address here the problem of synthesizing a spectral reflectance function, given the standard CIE 1931 tristimulus values. Different sets ...
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This article presents methods for estimating Munsell reflectance spectra, measured physically with a spectrophotometer, from psychophysically derived color-matching functions. The method is general and may also be used to estimate the reflectance spectra from human cone photoreceptor sensitivities. The color-matching functions and the cone sensitivities were found to contain almost identical in...
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Relative diffuse reflection measurements from the original and ground surfaces using a He-Ne laser are reported. The intensity measurements for the metallic, transparent dielectric, matte plastic surfaces and colored papers are presented. Our results indicate that among metallic surfaces tested, aluminum has the highest diffuse reflectance; while the original stainless steel surface shows the l...
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Physical surfaces such as metal, plastic, and paper possess different optical qualities that lead to different characteristics in images. We have found that humans can effectively estimate certain surface reflectance properties from a single image without knowledge of illumination. We develop a machine vision system to perform similar reflectance estimation tasks automatically. The problem of e...
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ژورنال
عنوان ژورنال: The Journal of The Institute of Image Information and Television Engineers
سال: 2018
ISSN: 1342-6907,1881-6908
DOI: 10.3169/itej.72.j86