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介绍了子波变换的基本理论及特点，并用它对图象进行三层分解。矢量量化优于标量量化。它已成功地应用于图象的数据压缩。文中应用失显量化法量化图象于波域数据，取得较满意的压缩效果。
The basic theory and characteristics of wavelet transform are introduced, and the image is decomposed by three layers. Vector quantization is better than scalar quantization. It has been successfully applied to image data compression. In this paper, the quantification of the image in the wave-field data is quantified using the loss-of-quantification method to obtain a more satisfactory compression effect.