色彩转调通常是由某种色相所呈现的冷暖、明暗变化体现的。

Color is usually transferred from a certain hue presented by the well-being, reflected in changes in brightness.

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平面色彩之上的光缺少层次、冷暖、明暗变化，因此是平面光。

Light plane on the lack of color levels, and well-being, the brightness changes, it is light plane.

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选取HSV模型中与亮度无关的S通道作为棉花图像的特征，排除了图像明暗变化对分割效果的影响。

S channel of the HSV model is chosen as the feature of cotton images, which may get rid of the effect of light.

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