研究了基于整数小波变换和改进零树编码的图像压缩方法 :先进行整数小波变换 ,将图像变换到小波域 ,再用改进的零树编码对图像进行压缩。给出了试验结果以及与 EZW压缩方法的比较 ,结果表明 ,整数小波变换和改进零树编码相结合应用于图像压缩是有效的 ,在一定程度上能缩短计算时间 ,并提高峰值信噪比 The method of image compression based on integer wavelet transform and improved zerotree coding is studied. The integer wavelet transform is used to transform the image into the wavelet domain, and then the image is compressed by the improved zerotree coding. The experimental results and the comparison with EZW compression method are given. The results show that the combination of integer wavelet transform and improved zerotree coding is effective for image compression, which can shorten the computation time and improve the peak signal to noise ratio