This paper considers the applications of DCT-based image- and video-coding methods in the asynchronous transfer mode (ATM) environment. Coding and reconstruction mechanisms are jointly designed to achieve a good compromise among compression gain, system complexity, processing delay, error-concealment capability, and reconstruction quality. The Joint Photographic Experts Group (JPEG) and Motion Picture Experts Group (MPEG) algorithms for image and video compression are modified to incorporate block interleaving in the spatial domain and discrete cosine transform (DCT) coefficient segmentation in the frequency domain to conceal the errors due to packet loss. A new algorithm is developed that recovers the damaged regions by adaptive interpolation in the spatial, temporal, and frequency domains. The weights used for spatial and temporal interpolations are varied according to the motion content and loss patterns of the damaged regions. When combined with proper layered transmission, the proposed coding and reconstruction methods can handle very high packet-loss rates at only slight cost of compression gain, system complexity, and processing delay.
|Original language||English (US)|
|Number of pages||11|
|Journal||IEEE Transactions on Circuits and Systems for Video Technology|
|State||Published - Jun 1993|
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering