Research output: Contribution to journal › Article › peer-review
Interval estimation of color parameters from digital images. / Palchikova, Irina Georgievna; Smirnov, Evgenii Sergeevich.
In: Computer Optics, Vol. 41, No. 1, 01.01.2017, p. 95-102.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Interval estimation of color parameters from digital images
AU - Palchikova, Irina Georgievna
AU - Smirnov, Evgenii Sergeevich
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Influence of the analog-to-digital conversion of an input signal from a sample onto the color rendition of a colorimetric device is studied. It is shown that irrespective of the light source choice, a specific systematic quantization error is introduced to the color rendition. We analyze the quantization error for a color photomatrix with a resolution of 8 bits per channel. An algorithm for finding the interval of values of the dominant wavelength and the color saturation of the sample is developed. It is shown that the similarity of two colors in a sample can be estimated by means of the Jaccard similarity coefficient. The spectral dependence of the intervals of color parameters, calculated from digital images, is found by means of a computing experiment. It is found that lower-brightness colors have a larger interval and are calculated with a lower accuracy. A hypothesis explaining the emergence of MacAdam ellipses on thechromaticity diagramis offered, namely the coding process of the visual neural signals can include procedures similar to the analog-to-digital conversion.
AB - Influence of the analog-to-digital conversion of an input signal from a sample onto the color rendition of a colorimetric device is studied. It is shown that irrespective of the light source choice, a specific systematic quantization error is introduced to the color rendition. We analyze the quantization error for a color photomatrix with a resolution of 8 bits per channel. An algorithm for finding the interval of values of the dominant wavelength and the color saturation of the sample is developed. It is shown that the similarity of two colors in a sample can be estimated by means of the Jaccard similarity coefficient. The spectral dependence of the intervals of color parameters, calculated from digital images, is found by means of a computing experiment. It is found that lower-brightness colors have a larger interval and are calculated with a lower accuracy. A hypothesis explaining the emergence of MacAdam ellipses on thechromaticity diagramis offered, namely the coding process of the visual neural signals can include procedures similar to the analog-to-digital conversion.
KW - Analog-to-digital conversion
KW - Color
KW - Color measurement
KW - Color rendering
KW - Color vision
KW - Colorimetry
KW - Digital image
KW - Dominant wavelength
KW - RGB-space
KW - Saturation
KW - Signal quantization
UR - http://www.scopus.com/inward/record.url?scp=85014958257&partnerID=8YFLogxK
U2 - 10.18287/2412-6179-2017-41-1-95-102
DO - 10.18287/2412-6179-2017-41-1-95-102
M3 - Article
AN - SCOPUS:85014958257
VL - 41
SP - 95
EP - 102
JO - Computer Optics
JF - Computer Optics
SN - 0134-2452
IS - 1
ER -
ID: 10276151