In transmitting compressed video bit-stream over Internet, packet loss causes error propagation in both spatial and temporal domain, which in turn leads to severe degradation in image quality. In this paper, a new error concealment algorithm, called EBMA (Edge Detection based Boundary Matching Algorithm), is proposed to repair damaged portions of the video frames in the receiver. Conventional BMA (Boundary Matching Algorithm) assumes that the pixels on the boundary of the missing block and its neighboring blocks are very similar, but has no consideration of edges across the boundary. In our approach, the edges are detected across the boundary of the lost or erroneous block. Once the orientation of each edge is found, only the pixel difference along the expected edges across the boundary is measured instead of the calculation of differences between all adjacent pixels on the boundary. Therefore, the proposed approach needs very few computations and the experiment shows an improvement of the performance over the conventional BMA in terms of both subjective and objective quality of video sequences.

Unable to display preview. Download preview PDF.

Authors and Affiliations

1. Department of Computer Science and the Information & Telecommunication Research Institute, 300 Youngbong-dong, Buk-gu, Kwangju, 500-757, Korea

   NamRye Son, YoJin Yang & GueeSang Lee

2. Department of Computer Science and Engineering, Hanyang University, 1271 Sa-1 dong, Ansan, Kyunggi-do, 425-791, Korea

   SungJu Park

Editors and Affiliations

1. Faculty of Mathematics and Computer Science Computer Science Department, Shahid Bahonar University, 22 Bahman Bulvard, Kerman, Iran

   Hassan Shafazand

2. Fraunhofer IPSI, Dolivostr. 15, 64293, Darmstadt, Germany

   Hassan Shafazand

3. Institute of Software Technology, Vienna University of Technology, Favoritenstr. 9/188, 1040, Vienna, Austria

   A. Min Tjoa

Reprints and permissions

© 2002 Springer-Verlag Berlin Heidelberg

Policies and ethics