预测编码的m文件，主要针对数字图像处理上机实验所编写的预测编码程序，利用的是简单的预测模板与图像进行卷积得到经预测编码后的图像。-M file of predictive coding, predictive coding procedures, written mainly for digital image processing, machine experiments use simple forecasting templates and image convolution to get the image predictive coding.