digit_classifier.py 文件源码

def _feature(image):
        """
        It's faster but still accurate enough with DSIZE = 14.
        ~0.9983 precision and recall
        :param image:
        :return: raw pixels as feature vector
        """
        image = cv2.resize(image, None, fx=DSIZE/28, fy=DSIZE/28,
                           interpolation=cv2.INTER_LINEAR)
        ret = image.astype(np.float32) / 255
        return ret.ravel()