Homogeneous Polynomial Model for Colorimetric Characterization of Camera with Variable Settings

Jingyu, 方竞宇 Fang; Haisong, 徐海松 Xu; Zhehong, 汪哲弘 Wang; Xiaomin, 吴晓玟 Wu

doi:10.3788/aos201636.0833002

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2023

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“…Contactless color measurement has always been the focus of color scientists. Digital photography with a high-precision digital camera can accurately capture color and appearance of a target object under a stable lighting condition [1] and can be used in measuring the color of an object. The digital photography method can accurately measure the colors of objects such as corrosive, high-temperature which cannot be measured by a traditional color measuring instrument, and distinguish the slight color change of the object by pixel basis.…”

Section: Introductionmentioning

confidence: 99%

Color measurement system based on convergent binocular stereo vision

Cui

Zhao

et al. 2023

Third International Symposium on Computer Engineering and Intelligent Communications (ISCEIC 2022)

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Aiming at the problems of single camera color measuring system, a method of 3D object color measurement based on convergent binocular stereo vision is proposed. By taking a pair of 2D images, an 3D image is reconstructed in a 3D point cloud model, in which color of each point is restored by fusing colors of corresponding point of 2D images. Based on color charts with 240 and 24 colors, a distinctive 11-term polynomial is trained to convert colors from image RGB to CIELAB. An experiment was conducted to test the proposed method. The results show that the color prediction accuracy for the proposed model was good enough.

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Section: Introductionmentioning

confidence: 99%