The predictive encoding is one of the basic techniques realizing image lossless compression. 预测编码方法是实现图像无损压缩的最基本的方法。
In this paper we propose a new method for lossless compression of grayscale images based on predictive coding,in which qantized error is processed by quadtree coding. 本文提出了一种基于预测编码并对量化误差进行四叉树编码从而实现对灰度图像无损压缩的方法。