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Using discrete wavelet transform and run length encoding to realize image compression and recovery
Pages: 155-160
Year: Issue:  2
Journal: Journal of Zhejiang Normal University(Natural Sciences)

Keyword:  离散小波变换游程长度编码图像压缩与恢复MATLAB;
Abstract: 为研究图像的压缩与恢复技术,提出了采用离散小波变换和游程长度编码实现图像的压缩与恢复.首先将原图进行3层离散小波分解,然后对分解后的子图分别采用游程长度编码实现图像压缩,最后进行游程长度解码和离散小波反变换实现图像恢复.通过对4张标准测试图像的MATLAB实验仿真,证明了该方法具有较高的压缩率和较小的压缩误差,尤其适合于邻度像素灰度值相关性高的图像.
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