Quality measurement of audiovisual signals based on digital watermarking

基于数字水印的视听信号质量测量

• 批准号: 227781-2007
• 负责人: Zhao, Jiying
• 金额: $ 1.09万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=478610
• 关键词: Quality; measurement; audiovisual; signals; based

The quality measurement of image, video, speech and audio is of critical importance in today's video broadcasting, telephony networks, transmission control, and e-commerce, mainly because quality is a key determinant of customer satisfaction and a key indicator of transmission condition. Subjective quality evaluation is highly unsuitable for online monitoring and broadcasting applications and is also very expensive and time consuming. The existing objective quality measurement metrics need the original signal for comparison. This requirement makes these metrics less than optimal for those applications that require audiovisual signals to be broadcasted or transmitted through the data network such as for television video, mobile video, or internet telephony. We propose to measure the quality of audiovisual signals based on digital watermarking. Our recent research achievements have demonstrated the feasibility and promise. We believe that we will be able to propose methods that can measure the quality of not only image and speech, but also video and audio; that can measure the effects of not only JPEG compression and MP3 compression, but also all kinds of common distortions to image, video, speech and audio; and that can measure the effects of not only individual distortion, but also combined multiple distortions. The envisaged quality measurement methods will significantly contribute to the video and audio broadcasting and telephony industries, and other areas such as forensic analysis and content authentication.

图像、视频、语音和音频的质量测量在当今的视频广播、电话网络、传输控制和电子商务中至关重要，主要是因为质量是客户满意度的关键决定因素，也是传输条件的关键指标。主观质量评价不适合在线监测和广播应用，而且成本高、耗时长。现有的客观质量测量指标需要原始信号进行比较。这一要求使得这些指标对于那些需要通过数据网络广播或传输视听信号的应用（如电视视频、移动视频或互联网电话）来说不是最佳的。提出了一种基于数字水印的音视频信号质量测量方法。我们最近的研究成果已经证明了这种方法的可行性和前景。我们相信，我们将能够提出方法，不仅可以测量图像和语音的质量，还可以测量视频和音频的质量；不仅可以测量JPEG压缩和MP3压缩的效果，还可以测量对图像、视频、语音和音频的各种常见失真；它不仅可以测量单个失真的影响，还可以测量多重失真的影响。设想的质量测量方法将大大有助于视频和音频广播和电话行业，以及其他领域，如法医分析和内容认证。