Auto white balance method using a pigmentation separation technique for human skin color

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• 作者：Satomi Tanaka ; Akihiro Kakinuma ; Naohiro Kamijo ; Hiroshi Takahashi…
• 关键词：Illuminant color estimation ; Color collection ; Auto white balance ; Human skin color model
• 刊名：Optical Review
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：24
• 期：1
• 页码：17-26
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Optics, Lasers, Photonics, Optical Devices; Atomic, Molecular, Optical and Plasma Physics; Quantum Optics; Microwaves, RF and Optical Engineering;
• 出版者：Springer Japan
• ISSN：1349-9432
• 卷排序：24

文摘

The human visual system maintains the perception of colors of an object across various light sources. Similarly, current digital cameras feature an auto white balance function, which estimates the illuminant color and corrects the color of a photograph as if the photograph was taken under a certain light source. The main subject in a photograph is often a person’s face, which could be used to estimate the illuminant color. However, such estimation is adversely affected by differences in facial colors among individuals. The present paper proposes an auto white balance algorithm based on a pigmentation separation method that separates the human skin color image into the components of melanin, hemoglobin and shading. Pigment densities have a uniform property within the same race that can be calculated from the components of melanin and hemoglobin in the face. We, thus, propose a method that uses the subject’s facial color in an image and is unaffected by individual differences in facial color among Japanese people.