... eocnomic statistics 经济统计（学） equal clusters 大小相等的群体 equal frequency 等频数 ...
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The image histogram is divided into two equal-area clusters. By means of determining the distance between the clusters, the edges of the image are detected.
该方法从图象的灰度概率域入手，将概率谱分为两个等面积的集群，通过判定群间距离检测图象的边缘。
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