Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
권호 표지

ROBUST TRANSMISSION OF VIDEO DATA STREAM OVER WIRELESS NETWORK BASED ON HIERARCHICAL SYNCHRONIZATION

  • Jung, Han-Seung (Inst. of New Media and Communications Seoul National University) ;
  • Kim, Rin-Chul (Inst. of New Media and Communications Seoul National University) ;
  • Lee, Sang-Uk (Inst. of New Media and Communications Seoul National University)
  • Published : 1998.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose an error-resilient transmission technique for the H.263 video data stream over wireless networks. The proposed algorithm employs bit rearrangement hierarchically, providing the robust and exact synchronization against the bit errors, without requiring extra redundant information. In addition, we propose the recovery algorithm for the lost or erroneous motion vectors. We implement the encoder and decoder, based on the H.263 standard, and evaluate the proposed algorithm through intensive computer simulation. The experimental results demonstrate that the proposed algorithm yields good image quality, in spite of the channel errors, and prevents the error propagation both in the spatial and the temporal domain efficiently.

Keywords