【摘要】 子波变换由于在时频域内具有良好的局部化性能，被广泛地应用于图象压缩编码中。本文对正交和双正交子波基在图象编码中的性能进行了比较，指出选择合适的子波基可以提高压缩比，改善图象质量，提高运算速度。更多还原

【Abstract】 With excellent local performance in time-frequency domain, wavelet transformhas been widely applied in image compression coding.By comparing the performancesof orthogonal and biorthogonal wavelet bases used in image coding, the paper posesthat the appropriate selection of wavelet bases can increase compression rate, improveimage quality and raise compressing speed.更多还原