A no-reference blockiness metric for videoconference

Author

Lin, Xiangyu ; Ma, Hanjie ; Jiang, Wei ; Chen, Yaowu

Author_Institution

Inst. of Adv. Digital Technol. & Instrum., Zhejiang Univ., Hangzhou, China

fYear

2011

fDate

26-28 July 2011

Firstpage

2861

Lastpage

2864

Abstract

A no-reference blockiness metric which is used to measure blocking artifacts of H.264/AVC coding videoconference, is presented in this paper. The encode information extracted from bit stream in the decoding process and the human face information are used to construct a region-of-interest (ROI) map. Based on the ROI map, the Sobel operator is adopted to make the fast estimation of blocking artifacts for H.264 videos. Experimental results show that the proposed method can measure blocking artifacts consistent with the real quality and show high sensitivity to the bit rate.

Keywords

data compression; decoding; feature extraction; teleconferencing; video coding; H.264/AVC coding videoconference; ROI map; Sobel operator; bit stream; blocking artifact fast estimation; blocking artifact measurement; decoding process; human face information; no-reference blockiness metric; region-of-interest map; Distortion measurement; Humans; Image coding; Quantization; Videoconference; Videos; H.264; ROI; blocking artifacts; human face; sobel;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6001654

Filename

6001654