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Real-time implementation of an object-based codec

Connor, Fergal (1997) Real-time implementation of an object-based codec. Master of Engineering thesis, Dublin City University.

Abstract
Modern video coding algorithms are becoming increasingly complex with the result that single general purpose processors are incapable of meeting the computational power required for real time implementation. The coding algorithms are continuously evolving therefore, any multiprocessor solution must not only possess the necessary computational power but must also be flexible enough to adapt to any modifications in the algorithms. This report presents a possible multiprocessor solution with specific reference to the DCU object-based analysis-synthesis coder. Firstly, an abstract model of the multiprocessor system is defined. The model is based on the dual requirements of computational power and flexibility. An analysis of the DCU coding algorithm is performed in order to refine the basic model by identifying potential realisation options that optimise coder performance. A reciprocal relationship exists whereby hardware constraints require modification of the algorithm. Any modifications are outlined and their effect on overall coder performance is investigated. Computational power costs are given for an implementation based on TMS320C30 DSPs. From experimental results it is shown that, despite the complexity of the coding algorithm, real time operation is possible. A decoder based on a single TMS320C30 has been developed that is capable of operating at up to 8 Hz.
Metadata
Item Type:Thesis (Master of Engineering)
Date of Award:1997
Refereed:No
Supervisor(s):Curran, Thomas
Uncontrolled Keywords:Coding theory; Multiprocessors; Real-time data processing
Subjects:Engineering > Electronic engineering
Computer Science > Algorithms
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
ID Code:19494
Deposited On:14 Oct 2013 13:34 by Celine Campbell . Last Modified 14 Oct 2013 13:34
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