摘要
通过研究SPIHT和EBCOT(JPEG2000核心算法)编码算法,分析它们所用的小波系数的不同性质,本文提出了把SPIHT算法用到的小波系数父子关系特性也用在EBCOT编码中的思想,并提出一种上下文关系的改进方法。在JPEG2000框架下对改进算法进行了仿真实验。理论分析和实验结果显示,改进的上下文关系优于JPEG2000中采用的上下文关系。
By reseaching SPIHT and EBCOT（the core of JPEG2000）, analyzing the different wavelet coefficients features they used, it is proposed in this paper that the relationship between father and children which is better used in SPIHT can be used into EBCOT, and an improved method of the context in JPEG2000 is given. Experimental simulation is implemented by modifying JPEG2000 programme. The simulation results and theoretical analysis show that the improved context is better than that used in JPEG2000.
出处
《计算机应用与软件》
CSCD
北大核心
2005年第12期110-111,144,共3页
Computer Applications and Software
作者简介
孙亚明，硕士生，主研领域：图像压缩。
