The fractures in different direction, scale and formation era in the zone across the block divide this area into several active blocks with different size and shape.
区内不同方向、规模和形成时代有别的断裂纵横交叉，将川滇地区划分为大小不同、形状各异的活动地块。
If the adjacent cell curvature difference, clarify in this range, the surface distortion is very serious, if cut and sew in here is cut off again, then divide membrane block has a great arc here will.
假如相邻单元曲率相差很大，阐明在这个方位，曲面歪曲的很严重，假如裁剪缝在此处不切断重新开始，那么裁剪膜块的鸿沟在此处就会有很大的弧形。
Divide the composite image into overlapped blocks and calculate the measure of each block. The forged area can be effectively exposed by checking inconsistencies of blocking artifact.
然后将待检测图像重叠分块并计算其相应块效应测度，利用块效应不一致性检测篡改区域。
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