A Robust Resolution-Enhancement Scheme for Video Transmission over Mobile Ad-Hoc Networks

Liang Zhou (1) , Baoyu Zheng (2) , Anne Wei (3) , Benoit Geller (1) , Jingwu Cui (4)

1 IS - Ingénierie Systèmes
2 Nanjing University of Posts and Telecommunications, Nanjing, China
3 CEDRIC - Centre d'études et de recherche en informatique et communications
4 Department of Neurobiology & Department of Neurosurgery

Historically, Error-Resilient (ER) video transmission and Super-Resolution (SR) image reconstruction techniques have evolved separately. In this paper, we propose a coordinated application of ER and SR to enhance the resolution of image transmitted over mobile ad-hoc networks. In order to combat error propagation, a flexible multiple description coding method based on shifted 3-D SPIHT (3-D Set Partitioning In Hierarchical Trees) algorithm is presented to generate variable independent descriptions (substreams) according to the network condition. And then, a novel unequal error protection strategy based on the priority level is provided to assign a higher level of error protection to more important parts of bitstream. Moreover, a robust SR algorithm is proposed in the presence of different kinds of packet loss rate to enhance the image resolution. Experimental results indicate that the proposed robust resolution-enhancement scheme outperforms the competing methods from the aspects of PSNR (Peak-Signal-to-Noise Ratio) and visual quality under different packet loss rates.

Keywords: resolution-enhancement; super-resolution; mobile ad-hoc networks; error-resilient

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]

Liang Zhou, Baoyu Zheng, Anne Wei, Benoit Geller, Jingwu Cui. A Robust Resolution-Enhancement Scheme for Video Transmission over Mobile Ad-Hoc Networks. IEEE Transactions on Broadcasting, 2008, 54, pp.312 ? 321. ⟨10.1109/TBC.2008.917746⟩. ⟨hal-01225610⟩