Cart (Loading....) | Create Account
Close category search window
 

Techniques to improve decoded video quality for erroneous H.264 bit streams in an asynchronous multiprocessor architecture

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Rajendran, R. ; Video Signal Process., Texas Instrum. India Pvt. Ltd., Bangalore, India ; Shastry, P.

A conventional synchronous single processor decoder system can no longer cater to the demands of the market in terms of processing speed. A modern asynchronous multiprocessor architecture partitions the decoding functions into different processing cores so that real time decoding of high mega pixel streams is achieved by parallel execution. The number of processor cores is a balance between chip area, processing Mhz requirements and the latency incurred in the pipeline. Error handling on a modern asynchronous multiprocessor architecture is far more involved compared to its synchronous counterparts. This paper presents a software design and methodology in order to achieve better error resilience and concealment quality in a High Profile H.264 Universal Decoder on an asynchronous multiprocessor architecture. It involves robust error handling and error recovery, detection and handling of possible start code overrun, overcoming limitations due to the extremely efficient software design, improved error detection logic, and improvements in End of Picture Detection. Average PSNR improvement of 0.35 dB and maximum 4 dB has been obtained by these techniques, when tested on an error stream test suite of more than 100 randomly corrupted streams.

Published in:

Signal Processing and Communications (SPCOM), 2012 International Conference on

Date of Conference:

22-25 July 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.