一种低码率彩色人脸图像编码方法  

Color facial image coding for low bit rate transmission

作　　者：李倩[1] 朱玉文[1] 刘万春[1] 

机构地区：[1]北京理工大学计算机科学与工程系,北京100081

出　　处：《计算机应用》2005年第3期589-591,共3页journal of Computer Applications

摘　　要：提出了一种适合低码率信道传输的嵌入式彩色人脸图像编码方法,不仅把握了人脸图像的特点,而且充分利用了彩色图像小波变换后的多种相关性。该方法将联合色彩分量矢量量化和零块、零树编码方法巧妙结合,把彩色图像的三个色彩分量单独扫描,单独编码的过程简化为联合扫描和联合编码的过程。实验结果表明该算法在低码率下,相比JPEG,获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。An embedded color facial image coding,based on the characteristics of facial image and multi-correlations of color image with wavelet decomposition, was proposed for low bit rate transmission. This algorithm combined joint-component vector quantization respectively with zero block and zero tree coding,scanned three component of color image separately and simplified separate coding into joint scanning and joint encoding. Experiment results show that in low bit rate environment, the new image compression scheme performs better than JPEG in the aspects of perception and PSNR(Peak Signal Noise Ratio).

关 键 词：彩色人脸图像编码 联合色彩分量矢量量化 零树 零块 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]