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一种率失真最优的JPEG2000码率自适应控制算法
李其虎; 任国强; 吴钦章; 韩文俊; 田园
Source Publication测绘学报
Volume40Issue:2Pages:204-208
2011
Language中文
Subtype期刊论文
Abstract为解决高分辨率航测图像数据量庞大问题,在研究JPEG2000码率控制算法的基础上,提出一种新的码率预分配自适应控制算法。对图像进行小波分解后,将去除最低频的子带小波系数建模为高斯分布。基于率失真理论推导出每个码块在总码率一定的情况下编码中实际应当贡献的码率,在熵编码时实时截止,而对最低频子带进行完整无失真编码。该算法实现码流的实时截断,减少编码器的计算量和存储空间,提高编码效率。试验结果表明,在图像压缩码率不是很高的情况下(>0.5bpp),采用码率预分配自适应控制算法模型,图像压缩效果要明显好于对整个频带...
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/4364
Collection光电测控技术研究室(三室)
Corresponding Author李其虎
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
李其虎,任国强,吴钦章,等. 一种率失真最优的JPEG2000码率自适应控制算法[J]. 测绘学报,2011,40(2):204-208.
APA 李其虎,任国强,吴钦章,韩文俊,&田园.(2011).一种率失真最优的JPEG2000码率自适应控制算法.测绘学报,40(2),204-208.
MLA 李其虎,et al."一种率失真最优的JPEG2000码率自适应控制算法".测绘学报 40.2(2011):204-208.
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