run length encoding meaning in English

行程编码图像行以行程序列表示的图像压缩技术，每一行程以一个给定的行程长度和灰度值定义
游程长度编码

Run length encoding , rle
长度压缩限制编码
Secondly , on the basis of the research on the characteristics of the wavelet coefficients , the combination of the ezw ( embedded zerotree wavelet ) and advanced rle ( run length encode ) is presented to realize the efficient codes of the wavelet coefficients . finally , the improved periodic extension algorithm is used to solve the boundary problem appeared in wavelet transform . the algorithm is realized by software and the good processing results are obtained
论文选取cdf ( 2 , 2 )小波基，取得了较好图像压缩效果；二、通过对小波系数的特点的研究，提出了将嵌入式零树编码和改进的游程编码相结合的方法，实现了小波系数的有效编码；三、采用改进的周期延拓法解决图像进行小波分解时出现的边界问题，并通过软件实现，取得较好的处理效果。