说明：  其余混沌的数字图像处理，应用msb的置乱方法，由于msb 对图像的贡献最大，所以对msb 的置乱会产生很好的置乱效果。
(Chaos remaining digital image processing, application msb Scrambling method, due to the contribution of the image msb largest, so msb Scrambling will have a very good scrambling effect.)