在HSV颜色空间，定义了一种新的矢量排序方法。
In the HSV color space, a new vector sorting method is defined.
然后将特征矢量进行字典排序，并结合图像块的位移矢量，检测且定位出篡改区域。
Secondly, we sorted the feature vector by dictionary, and located the tampered region by utilizing the displacement vectors of image blocks.
同时指出可以通过判断矢量多边形面积的正负值将多边形的顶点按照顺时针或逆时针方向排序。
At the same time the author points out that the polygon vertexes can be sorted clockwise or anticlockwise by judging the sign of the vector polygon area.
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