二维匹配跟踪自适应图像编码

被引:2
作者
廖斌
许刚
王裕国
机构
[1] 中国科学院软件研究所
[2] 中国科学院软件研究所 北京
[3] 北京
关键词
匹配跟踪; 冗余时频原子字典; 感兴趣区域(ROI); 图像编码;
D O I
暂无
中图分类号
TN919.81 [图像编码];
学科分类号
0810 ; 081001 ;
摘要
提出一种基于二维可分离Gabor函数时频原子字典的自适应图像编码方法 该方法能够产生嵌入式、渐进PSNR的位流 ,并具有对感兴趣区域ROI优先编码的能力 它将原始图像表示成若干时频原子函数的线性叠加 ,这些时频原子取自冗余的时频原子字典 ,可以最佳匹配图像中所包含的各种结构特征 实验结果表明 ,该算法能够有效地捕捉图像中所包含的纹理和边缘等具有高频窄带的信号特征 ,在极低位率下该算法的图像恢复质量要优于零树SPIHT编码算法
引用
收藏
页码:1084 / 1090
页数:7
相关论文
共 10 条
[1]  
A universal image quality index. Wang Zhou,Bovik Alan C. IEEE Signal Processing Letters . 2002
[2]  
Matching pursuits with time-frequency dictionaries. MallatS,ZhangZ. IEEE Transactions onSignalProcessing . 1993
[3]  
Efficient context-based entropy coding for lossy wavelet image coding. Chrysafis C,Ortega A. In: Proceedings of Data Compression Conference Snowbird, Utah . 1997
[4]  
Efficient pre-coding techniques for wavelet-based image compression. Marpe D,Cycon H L. In: Proceedings of Picture Coding Symposium, Berlin . 1997
[5]  
High-order context modeling and embedded conditional entropy coding of wavelet coefficients for image compression. Wu X. In: Proceedings of the 31st Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA . 1997
[6]  
A new fast and efficient image codec based on set partitioning in hierarchical trees. Said A,Pearlman W A. IEEE Transactions on Circuits and Systems for Video Technology . 1996
[7]  
Quantization of over complete expansions. Goyal V K,Vetterli M. In: Proceedings of Data Compression Conference,Snowbird, Utah . 1995
[8]  
A rheory for multiresolution signal decomposition:The wavelet representation. Mallat S G. IEEE Transactions on Pattern Analysis and Machine Intelligence . 1989
[9]  
Efficient methods for encoding regions of interest in the upcoming JPEG2000 still image coding standard. Charilaos Christopoulos,et al. IEEE Signal Processing Letters . 2000
[10]  
Entropy-based algorithms for best-basis selection. Coifman R R,Wickerhauser M V. IEEE Transactions on Information Theory . 1992