基于HEVC框架的无损压缩编码算法研究  

Research on Lossless Intra Coding Based on HEVC Framework

作　　者：刘铁华[1] 

机构地区：[1]北京工业大学计算机学院,北京100124

出　　处：《软件》2013年第2期69-72,共4页Software

摘　　要：为了进一步提高无损压缩的效率,提出了一种基于高效率视频编码(High Efficiency Video Coding,简称HEVC)框架的无损压缩编码算法。此框架不只是对视频压缩有效,还对于全I帧视频序列和图像都有很好的压缩效果,我们便是利用这个框架来压缩图像。该算法通过采用自适应差分脉冲编码调制(Differential Pulse Code Modulation,简称DPCM)和误差补偿相结合的方法来提高预测精度,从而达到降低码率的目的。实验结果表明,该方法比HEVC原有无损压缩方法节省10%以上的码率,并且对于纹理复杂的图像也有较好的压缩效果。In order to improve the efficiency of the lossless compression, we proposed a lossless intra coding algorithm based on the framework of High Efficiency Video Coding, referred to as HEVC, which improved prediction accuracy by using adaptive differential pulse code modulation and error compensation method, so as to achieve the purpose of reducing bit rate. This framework was effective not only for video sequences compression, but also for the sequences of all I-frame and images compression, and we used the framework compress images. The experimental results show that the proposed algorithm can save more than 10% bit rate compared with the lossless algorithm in HEVC, and also had good compression effect in the images with complicated texture.

关 键 词：多媒体编码 高效率视频编码 无损压缩 差分编码 误差补偿 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]