基于数字水印的无参考视频质量评估方法

提出了一种无参考视频质量评估的新方法，该方法在解码端无需原始参考视频序列，通过提取事先嵌入到压缩视频中的水印与收端本地存储的原始水印拷贝比较，从而实现对视频质量的评估．该方法不需要传送独立的测试视频序列，提高了信道的利用率，又保证视频质量评估的实时性．实验表明，评估的恢复视频的PSNR与实测的结果基本一致，可应用于无线和IP等视频业务的质量评估．

A no-reference video quality assessment method based on digital watermark

This paper proposes a novel no-reference video quality assessment method. By comparison of the extracted watermark embedded in transmitted video with the copy of original watermark in the destination, we can assess all restored video quality without any original reference video sequences. This method does not require any information about the test video sequence to be transmitted, so it can improve the utilization efficiency of the channel as well as keep the assessment in real time. Experiment shows that the assessed PSNR of reconstructed video quality is approximately equal to its true measured value, so this technique can be applied to the video quality assessment of wireless and IP video services.