A Novel Content-Based Video Coding Scheme for Robust Video Transmission over Ad Hoc Networks

Author

Gong, Shengrong ; Yang, Jun ; Zhang, Shukui

Author_Institution

Coll. of Comput. Sci. & Technol., Soochow Univ., Suzhou, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

Current video encoding schemes used for ad hoc networks do not consider the characteristics of human visual system and the importance of image content when designing the encoder, so their encoding methods need to be improved. By analyzing motion information as well as the texture feature of video images, we propose a novel content-based video coding scheme C-FRMDC for robust video transmission over ad hoc networks. First determine the region of interest (ROI) of the video image before actual coding. Then divide the video sequence into ROI slice group and regular slice group using dynamic flexible macro block ordering (FMO) technology. After that, carry out multiple description coding scheme and redundant slices (RSs) technology to protect ROI slices. Finally transmit the bit-stream using multi-path transmission. The simulation results based on H.264/AVC show that our method improves the objective and subjective quality of the reconstructed video sequence obviously and ensure a robust video transmission over ad hoc networks.

Keywords

ad hoc networks; image motion analysis; image reconstruction; image sequences; image texture; mobile radio; video coding; C-FRMDC content-based video coding scheme; FMO; ROI slice group; RS; ad hoc network; dynamic flexible macro block ordering technology; encoding method; human visual system; image content; mobile communication network; motion information; multipath transmission; reconstructed video sequence; redundant slices technology; region-of-interest; regular slice group; robust video transmission; texture feature; Ad hoc networks; Humans; Image analysis; Image coding; Image motion analysis; Image texture analysis; Robustness; Video coding; Video sequences; Visual system;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302389

Filename

5302389