用经验模式分解分解出固有模式函数，从而得出瞬时频率和包络，适合进行特征提取-using empirical mode decomposition decomposition patterns inherent function, thereby reaching and instantaneous frequency envelope, suitable for feature extraction

用visual C++实现的一个模式识别算法。可以识别信封上的邮政编码。具有较高的准确率-Using visual C++ implementation of a pattern recognition algorithm. Zip code on the envelope can be identified. With high accuracy