1. 二炮工程学院,陕西,西安,710025
2. 西安电子科技大学,陕西,西安,710071
3. 国防科技大学,湖南,长沙,410073
4. 二炮工程学院陕西西安,710025
5. 西安电子科技大学陕西西安,710071
6. 国防科技大学湖南长沙,410073
纸质出版:2004
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罗 强, 任庆利, 罗 莉. 基于重要图中止符的变树结构的零树嵌入式编码算法[J]. 电子学报, 2004,32(10):1730-1733.
LUO Qiang, REN Qing-li, LUO Li. A Kind of High Speed and High Quality Embedded Zerotree Coding Algorithm for Hardware Implementation[J]. Acta Electronica Sinica, 2004, 32(10): 1730-1733.
本文提出了一种易于硬件实现的高速优质的零树嵌入式编码算法.通过精简重要图结构
消除结构中的一些冗余、减小一些无用的零树、消除一些不必保留的孤立零点
来提高编重要图的效率
同时也提高了压缩效果、加快了编解码速度.采用提升方案构造双正交9/7小波
不仅进一步提高了小波变换速度
而且为硬件实现提供了保障.经模拟实验表明:此方法加快小波变换速度
缩短了编、解码时间
提高了图像压缩比和恢复图像质量.
In this paper
a kind of high speed and high quality embedded zerotree coding algorithm for hardware implementation was presented
significance map structure was simplified
and some redundance structure was reduced.Some useless zerotrees were minished and some isolation zeros not to be kept were cleared up so that efficiency of significance map coding rose.It improved image compression performance
reduced coding and decoding execution time.We designed the biorthogonal 9/7 wavelet basis based on lifting scheme so that it not only raised wavelet transform speed
but also ensured hardware implementation.The simulation experimentation showed that this method improved speed of wavelet transform and shortened time of coding and decoding.It raised image compression rate and improved quality of restructure image.
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