Low Bit-rate Image Coding Based on Adaptive Lifting Scheme
基于自适应提升方案的低比特率图像压缩编码

This paper introduces adaptive lifting wavelet transform algorithm firstly.Prediction and update operator have been adjusted adaptively according to information partial characteristic and accurate match to the process information.The algorithm can decrease the amount of calculation and computational complexity in the image wavelet analysis,can carry out the same address operation,and is advantageous to recur to the DSP hardware realization.Secondly,this paper proposes to adopt adaptive depth first search strategy through definition floating threshold,and improved image coding efficiency.The experiment results show that the new image compression scheme has been improved and it is better than traditional algorithm in the aspects of image quality,reduced the image bit number,compression effect and compression coding efficiency.