这个程序将图像变为二值化图像，然后对图像进行形状的特征提取，算法很全，包含多种图像形状提取方式。-image of this procedure into two binary images, and then to shape the image feature extraction algorithm is very full, Shape mixture of images extraction methods. -This process the image into a binary

feature-extraction in a binary image Features are assumed to be made up of ones, against a background of zeros.