Title :
A study of key-frame reference picture selection method for error resilient multiple video objects distribution
Author :
Kimata, Hideaki ; Yashima, Yoshiyuki ; Kobayashi, Naoki
Author_Institution :
NTT Cyber Space Labs., Kanagawa, Japan
Abstract :
With an object based video coding method, e.g. MPEG-4, a visual scene can be presented by composition of multiple video objects, and in distribution via network, multiple video object bitstreams are transmitted simultaneously. In transmission via erroneous network such as the Internet, error resilience without delay is necessary for composition of these objects keeping synchronization. This paper presents a novel error resilience method, KRPS (Keyframe Reference Picture Selection) for multiple video objects distribution. In this method, the distribution sever receives ACK signals from multiple clients, and dynamically controls reference picture. In order to recover from error state at all clients, the server selects a particular frame, keyframe, which has the capability of changing reference picture. From computer simulation, it is proved that KRPS can achieve high error resilience with keeping high coding efficiency
Keywords :
client-server systems; computer network reliability; fault tolerant computing; multimedia communication; synchronisation; video coding; ACK signals; Internet; KRPS; MPEG-4; coding efficiency; distribution sever; error resilience method; error resilient multiple video objects distribution; key-frame reference picture selection method; multiple clients; multiple video objects; multiple video objects distribution; object based video coding method; synchronization; visual scene; Computer errors; Computer simulation; Decoding; IP networks; Laboratories; Layout; MPEG 4 Standard; Network servers; Resilience; Video coding;
Conference_Titel :
Multimedia and Expo, 2000. ICME 2000. 2000 IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-6536-4
DOI :
10.1109/ICME.2000.871047