When the compression ratio is high, there is uncontinuous on the image sub-block edges, such discontinuities effects on the performance of the block in the visual.
当压缩比较高时，图像子块边缘出现不连续的现象，这种不连续在视觉上表现为块效应。
Nevertheless, the smaller size of sub image also results to clearer block effect, and the fusion results achieved by ridgelet will also approximate to wavelet transform.
但是，分割尺寸越小，重构图像的块状效应越明显，而且分割越小图像所表示的方向也越少，效果也近似于小波变换。
Secondly, the use of fractal dimension as an index to divide the image to sub-block, can receive high similarity sub-blocks.
其次，采用分形维数为指标来划分图像的相似块，能够得到具有较高相似度的块。
First, according to the scale-down proportion the sub-block of every pixel at small image is obtained from original image, and then scans the block in corner-points image of the original image.
首先，求出原始图片的角点信息，再根据缩小比例，求出缩小图像中的对应子块。
First, according to the scale-down proportion the sub-block of every pixel at small image is obtained from original image, and then scans the block in corner-points image of the original image.
首先，求出原始图片的角点信息，再根据缩小比例，求出缩小图像中的对应子块。
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