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。

youdao

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。

youdao