利用“二值图像与原图像做点乘,得到子图像”的原理.，编写M程序，构造特殊的二值图像，最终得到需要的子图像。

编写M程序，实现图像的平移，要求两个平移量TX、TY可取正负值 。

-By using the principle of　multiplying the binary image and the original image to get the sub-image,　the M program is programmed to construct a special binary image to obtain the required sub-image.

The preparation of M procedures to achieve the translation of the image, requiring two translations TX, TY desirable positive and negative values.