Color is an important vision character of video image. In order to describe and process image color, the first thing is to select an appropriate color model and abstract its main character.
颜色是视频图像的一个重要视觉特征，描述和处理图像颜色首先要选用合适的颜色模型，并提取颜色的主要颜色特征。
A normal sphere hue model based on reflect character and average radius of image was introduced.
提出以待测图象的反射特性、平均半径为参数的标准球体灰度模型。
According to the vision character of cone and rod in human's retina, a new model called vision adaptability model is proposed in this paper, the model aims at enhancing color image.
根据人眼视网膜上的锥细胞和柱细胞的视觉特性，提出了用于彩色图像增强的视觉适应性模型。
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