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Analysis and modeling of optimal error protection for embedded codestreams

[+] Author Affiliations
Muhammad Imran Iqbal

Blekinge Institute of Technology, SE-371 79 Karlskrona, Sweden

Hans-Jürgen Zepernick

Blekinge Institute of Technology, SE-371 79 Karlskrona, Sweden

J. Electron. Imaging. 21(2), 023022 (Jun 22, 2012). doi:10.1117/1.JEI.21.2.023022
History: Received November 14, 2011; Revised April 19, 2012; Accepted May 11, 2012
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Abstract.  Efficient utilization of bandwidth is key to providing mobile multimedia services such as wireless imaging. As such, efficient allocation of the available parity budget for error protection of the associated codestreams is essential for ensuring quality of service. Computing the optimal parity allocation to the codestream packets may not be possible in real-time due to the huge number of ways the parity can be assigned to the codestream packets. This is particularly true for systems having limited resources, such as mobile handheld devices. As a result, it is important to provide an error-protection scheme that gives good error-protection performance while imposing low computational and memory demands on the system. We therefore analyze how different parameters such as signal-to-noise ratio and source distortion-rate function affect the optimal unequal error protection (UEP) scheme for embedded codestreams. We also propose to approximate the optimal UEP using suitable mathematical models in order to reduce the complexity that otherwise would occur with computing the optimal UEP. We investigate several models for their fitness in approximating the optimal UEP using different performance metrics. The simulation results show that most of these models provide an excellent trade-off between performance and complexity.

© 2012 SPIE and IS&T

Citation

Muhammad Imran Iqbal and Hans-Jürgen Zepernick
"Analysis and modeling of optimal error protection for embedded codestreams", J. Electron. Imaging. 21(2), 023022 (Jun 22, 2012). ; http://dx.doi.org/10.1117/1.JEI.21.2.023022


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