A Comparison Between ULP and MDC With Many Descriptions for Image Transmission

作者：Baccaglini, Enrico^*; Tillo, Tammam; Olmo, Gabriella

来源：IEEE Signal Processing Letters, 2010, 17(1): 75-78.

DOI：10.1109/LSP.2009.2032976

• Error resilience
• graceful degradation
• JPEG 2000
• multiple description coding (MDC)
• unequal loss protection (ULP)

In this letter, we present a performance comparison between multiple description coding (MDC) and unequal loss protection (ULP) for progressive image transmission over lossy packet networks. Two optimization criteria are considered, i.e., a multi-quality criterion, when distinct quality levels are guaranteed at the decoder side, and the optimization of the expected quality at the receiver. We resort to both a semi-analytical approach and simulation results. To enable numerical comparisons, we address a specific MDC algorithm suitable for progressive imaging, and a state-of-the-art ULP algorithm based on Reed Solomon codes. The results, although cannot be generalized to any MDC and ULP methods, are useful to put into evidence some general features that can drive the selection of the most proper technique for the application at hand. In fact, they allow to put into evidence the main advantages and drawbacks of either technique.

• 出版日期2010-1
• 单位西交利物浦大学