基于分组测试的小波变换图像编码

Wavelet transform image coding based on group testing

将分组测试与基于块结构的小波图像编码相结合,构造了一种具有多种可伸缩能力的编码结构,在保证分辨率和保真度可伸缩性的同时提供了对压缩图像的随机访问能力。结合上述编码结构,提出了一种低复杂度,具有分辨率、保真度可伸缩和随机访问能力的图像无损压缩算法。实验结果表明:该算法的无损编码码率与JPEG2000接近。

Combined the grouping testing with the coding being based on blocking and bit-plane,a coding structure with multiple scalabilities was constructed.The coding structure can ensure the sca-lability of resolution and fidelity.Meanwhile it also allows ＂random access＂ to compressed image.Based on above mentioned coding structure,a low complexity entropy coding algorithm,which leads to a brand-new solution for integer wavelet transform image coding,was presented.Results of experiments show that the lossless coding rate of this algorithm is close to that of JPEG2000.