中文说明：将图像转换为灰度，进行压缩，图像恢复原来的颜色
English Description：
Converting the image to grayscale and performing compression, the image is restored the original color
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中文说明：将图像转换为灰度，进行压缩，图像恢复原来的颜色
English Description：
Converting the image to grayscale and performing compression, the image is restored the original color