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Illumination Chromaticity Estimation Based on Dichromatic Reflection Model and Imperfect Segmentation

机译:基于双色反射模型和不完美分割的照明色度估计

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摘要

The illumination chromaticity estimation based on the dichromatic reflection model has not been made practicable, since the method needs image segmentation beforehand. However, its two-dimensional model is sufficiently robust, when it is combined with the least square method. The proposed algorithm executes the color space division instead of the segmentation. The original image is divided into small color regions, each of which corresponds to one of color sub-spaces. Though this division is imperfect image segmentation, the illumination chromaticity estimation based on the chromaticity distribution in the color regions is possible. Experimental result shows that this method is also applicable to images of apparently matt surfaces.
机译:由于该方法需要预先进行图像分割,因此基于双色反射模型的照明色度估计尚不可行。但是,当与最小二乘法结合使用时,其二维模型具有足够的鲁棒性。所提出的算法执行颜色空间划分而不是分割。原始图像被划分为较小的颜色区域,每个颜色区域对应一个颜色子空间。尽管该划分是不完美的图像分割,但是基于彩色区域中的色度分布的照明色度估计是可能的。实验结果表明,该方法也适用于表面无光泽的图像。

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