Causes and subjective evaluation of blurriness in video frames

作     者：Dardi, Francesca Abate, Leonardo Stessen, Jeroen Ramponi, Giovanni 

作者机构：Univ Trieste Dept Engn & Architecture I-34127 Trieste Italy TP Vision Netherlands Innovat Site Eindhoven NL-5616 LZ Eindhoven Netherlands 

出 版 物：《SIGNAL PROCESSING-IMAGE COMMUNICATION》 (信号处理：图像通信)

年 卷 期：2013年第28卷第3期

页      面：209-221页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：University of Trieste 

主　　题：Blurriness Coding artifacts Visual attention Video quality estimation 

摘      要：A method to automatically assess the seriousness of the blurriness artifact in video frames displayed on a state-of-the-art TV monitor is presented. Different types of the artifact are identified, depending on the stage of the video chain where they are originated, namely, blur produced during acquisition, post-processing and encoding. Every type is observed to produce slightly different effects on the frame and, more importantly, to affect image quality differently, so that distinguishing among types is necessary to perform an appropriate restoration. Two main metrics are therefore introduced for classifying the type of blurriness and, when useful, measuring its strength. Particular care was taken in distinguishing the intentional background blur, which does not cause an actual degradation in the frame quality. The appropriateness of the method in classifying the artifact and predicting the subjective frame quality was verified in the experiments. (C) 2012 Elsevier B.V. All rights reserved.