The main information of image that all consists in the edge is a sharper place of the gray scale change in the image, and shows the discontinuity of local characters in the image.
图像的主要信息都存在于图像的边缘中，表现为图像局部特征的不连续性，是图像中灰度变化比较剧烈的地方。
The main information of image that all consists in the edge is a sharper place of the gray scale change in the image, and shows the discontinuity of local characters in the image.
图像的主要信息都存在于图像的边缘中，表现为图像局部特征的不连续性，是图像中灰度变化比较剧烈的地方。
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