中文说明:压缩上N×使用的无损压缩算法(RLE,霍夫曼,LZW,算术)1的灰度级图像的N挡,并计算相应的压缩比
English Description:
Compression n × uses the lossless compression algorithm (RLE, Hoffman, LZW, arithmetic) 1 of the grayscale image n block, and calculates the corresponding compression ratio