这是修改之后的系统，主要用支持向量机SVM和水平方向梯度HOG特征进行特征目标识别分类-This is a system modifications, mainly with support vector machines SVM and horizontal direction gradient the HOG feature characteristic target recognition classification

印章识别：使用支持向量机（SVM）进行分类，把印章和背景区分，以分离印章。-using the SVM to recognizing a stamp from its background