中文说明：功能：输入图像，该图像可以检测关键点，这些点通常对应于图像可用于物体识别的一个重要目的，也可以作为设有对图像分类。运行程序Ldx_GoSalScale.m之一，就可以知道这个程序（调试环境MATLAB7.0）的使用。
English Description：
Function: input image, this image can detect critical points, these points usually correspond to an important object of the image can be used for object recognition, can also be used as features for image classification. Run one of routine Ldx_GoSalScale.m, you can know the usage of this program (debugging environment matlab7.0).