For very narrow military battlefield communication channels, the implementation of transmission problem of computer images is necessary. This paper proposed a coding method for computer monitor screen image transmission system based on narrow bandwidth, combined with the adaptive block-based image method, conducted high compression of digital images, achieving the efficient transmission under the narrow channel conditions.%针对军队战场无线通信信道极窄情况下，计算机图像需要实施传输的问题，提出了一种基于窄带宽传输系统的计算机屏幕监控图像的编码方法，结合图像自适应分块的方法，对获得的数字图像进行高倍压缩，实现了图像的高效传输。
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