Impact of region-of-interest video coding on perceived quality in mobile video
Himawan, Ivan, Song, Wei, & Tjondronegoro, Dian W. (2012) Impact of region-of-interest video coding on perceived quality in mobile video. In Zhang, Jian, Schonfeld, Dan, & Feng, David Dagan (Eds.) Proceedings of the 2012 IEEE International Conference on Multimedia and Expo, IEEE, Melbourne Convention and Exhibition Centre, Melbourne, VIC, pp. 79-84.
Effective streaming of video can be achieved by providing more bits to the most important region in the frame at the cost of reduced bits in the less important regions. This strategy can be beneficial for delivering high quality videos in mobile devices, especially when the availability of bandwidth is usually low and limited. While the state-of-the-art video codecs such as H.264 may have been optimised for perceived quality, it is hypothesised that users will give more attention to interesting region/object when watching videos. Therefore, giving a higher quality to region of interest (ROI)while reducing quality of other areas may result in improving the overall perceived quality without necessarily increasing the bitrate. In this paper, the impact of ROI-based encoded video on perceived quality is investigated by conducting a user study for varous target bitrates. The results from the user study demonstrate that ROI-based video coding has superior perceived quality compared to normal encoded video at the same bitrate in the lower bitrate range.
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|Item Type:||Conference Paper|
|Keywords:||Subjective quality, User Study, Video analysis, Region of Interest|
|Subjects:||Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DISTRIBUTED COMPUTING (080500) > Mobile Technologies (080502)|
Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > INFORMATION SYSTEMS (080600) > Computer-Human Interaction (080602)
|Divisions:||Current > Schools > School of Information Systems|
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2012 IEEE|
|Deposited On:||25 Jul 2012 09:11|
|Last Modified:||31 Jul 2012 06:08|
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