Feature-based adaptive error concealment for image transmission over wireless channel

Shuiming Ye; Guijin Wang; Xinggang Lin

doi:10.1117/12.476365

7 May 2003 Feature-based adaptive error concealment for image transmission over wireless channel

Shuiming Ye, Guijin Wang, Xinggang Lin

Proceedings Volume 5022, Image and Video Communications and Processing 2003; (2003) https://doi.org/10.1117/12.476365
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

Error concealment is becoming increasingly important because of the growing interest in multimedia transmission over unreliable channels such as wireless channel. At present most concealment method has its own advantage as well as applicable limitation. In different case, it can achieve different concealment effect. In our paper, we present a novel feature-based image error detection and error concealment algorithm to improve the image quality which was degraded during its transmission over wireless channel. First a simulation channel based on Rayleigh mode is implemented to emulating the actual wireless fading channel characterized by fading, multipath and Doppler frequency shift. The damaged image blocks are detected by exploring the contextual information in images, such as their consistency and edge continuity. The statistical characteristics of missing blocks are then estimated based on the types of their surrounding blocks (e.g., smoothness, texture and edge). Finally different error concealment strategies are applied to different types of blocks in order to achieve better visual quality. Instead of assuming random errors in packets, we simulate the errors of wireless channel based on the Rayleigh model. The proposed algorithm is tested on a number of still images. Simulation results demonstrate that our proposed algorithm is effective in terms of visual quality assessment and PSNR.

Citation Download Citation

Shuiming Ye, Guijin Wang, and Xinggang Lin "Feature-based adaptive error concealment for image transmission over wireless channel", Proc. SPIE 5022, Image and Video Communications and Processing 2003, (7 May 2003); https://doi.org/10.1117/12.476365

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available