When processing an image, you will often need to mark up an area to which an effect or a correction should be applied.
当处理图像，你会经常需要的一个领域，其中影响或更正，应适用。
The first stage should be the selection of an appropriate color space and extracting the major color characteristics when describing and processing an image with computer.
用计算机描述和处理图象颜色首先要选择合适的颜色空间（模型），并提取图象的主要颜色特征。
The first stage should be the selection of an appropriate color space and extracting the major color characteristics when describing and processing an image with computer.
用计算机描述和处理图象颜色首先要选择合适的颜色空间（模型），并提取图象的主要颜色特征。
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