MDVQM: A novel multidimensional no-reference video quality metric for video transcoding

作     者：Zhang, Fan Steinbach, Eckehard Zhang, Peng 

作者机构：Tech Univ Munich Inst Media Technol D-80333 Munich Germany Huawei Technol Co Ltd Beijing Peoples R China 

出 版 物：《JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION》 (可视通信与图像显示杂志)

年 卷 期：2014年第25卷第3期

页      面：542-554页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0835[工学-软件工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Video quality assessment Video transcoding Perceived video quality metric No-reference Frame dropping Spatial down-sampling Quality of experience Subjective video quality 

摘      要：In this paper, we study the impact of quantization, frame dropping and spatial down-sampling on the perceived quality of compressed video streams. Based on the analysis of quality ratings obtained from extensive subjective tests, we propose a no-reference metric (named MDVQM) for video quality estimation in the presence of both spatial and temporal quality impairments. The proposed metric is based on the per-pixel bitrate of the encoded stream and selected spatial and temporal activity measures extracted from the video content. All the values required to compute the proposed video quality metric can be obtained without using the original reference video which makes the metric for instance useful for making transcoding decisions in a wireless video transmission scenario. Different from comparable metrics in the literature, we have also considered the case when both frame rate and frame size are changed simultaneously. The validation results show that the proposed metric provides more accurate estimation of the video quality than the state of the art metrics. (C) 2013 Elsevier Inc. All rights reserved.