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提出了一种基于子波变换的灰度图像数据压缩编码方案，其基本思路是对子波分解后的最低分辨率亮度子图像采用ＪＰＥＧ编码，对各级边缘子图像进行阈值量化后采用行程编码．对５１２×５１２的Ｌｅｎａ灰度图像进行编码，在压缩比为５２时，峰值信噪比（Ｓ／Ｎ）Ｐ为２９．２４５ｄＢ．并获得有较好视觉效果的重构图像．
A wavelet coding based gray-scale image data compression and coding scheme is proposed. The basic idea of this method is to use JPEG coding for the sub-wavelet decomposition of the lowest resolution luminance sub-image. Threshold quantization of edge sub- . The Lena grayscale image of 512 × 512 is encoded. When the compression ratio is 52, the peak signal-to-noise ratio (S / N) P is 29.245 dB. And obtain a better visual effect of the reconstructed image.