In so doing the original image is decomposed into lots of integral sub-blocks, and the position, size and gray value of each integral sub-block can be stored with an efficient way, so as to achieve the aim of compression.

• 该方法把原始图像分解为若干个整体子块，并采用有效的方式存储每个整体子块的位里、大小和灰度，从而达到压缩的目的。