A new standardization method is proposed to solve the problem of the distorted image recognition , which is that the image ' s centroid was gotten based on the pixels total value of the whole image , and then the largest apothem and the rotated angle were obtained by the distance of the centroid and the image brim , last the object and the reference image adjusted the entirely same images in the scale and the rotated angle according to the uniform standardization 由此，提出了基于图像质心和最长边的归一化图像处理新算法：根据图像像素总值求取图像质心，根据质心和图像边缘轮廓点之间的长度求出图像的最长边和旋转角度，然后根据统一标准将目标图像和参考图像调整至同一长度和旋转方向的完全相同的图像。
