Title :
A burst error concealment technique for visual communications in a mobile environment
Author :
Lee, June-Sok ; Lee, Young-A ; Park, Woo-Seok ; Ko, Sung-Jea
Author_Institution :
Dept. of Electron. Eng., Korea Univ., Seoul, South Korea
Abstract :
A burst error concealment technique is proposed for visual communications in a mobile environment. The proposed method is applicable to wireless visual communications due to its low computational cost and acceptable image quality. In the transmission of real-time video over wireless, due to the limited bandwidth available, a frame is divided into just 2 or 3 packets. Therefore, the loss of a packet introduces burst errors which are the loss of the several rows of macroblocks (MBs) in the frame. The proposed error concealment technique estimates the lost motion vector (MV) by using the neighboring MVs of the damaged MB.
Keywords :
error correction; image motion analysis; image sequences; mobile radio; parameter estimation; video signal processing; visual communication; 144 pixel; 176 pixel; burst error concealment; image quality; low computational cost; mobile environment; motion vector; packet loss; video sequences; visual communications; Bandwidth; Communication networks; Costs; Decoding; Degradation; Image quality; Mobile communication; Video sequences; Visual communication; Wireless communication;
Conference_Titel :
Consumer Electronics, 2003. ICCE. 2003 IEEE International Conference on
Print_ISBN :
0-7803-7721-4
DOI :
10.1109/ICCE.2003.1218785
