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

Enrico Baccaglini, Gabriella Olmo, Tammam Tillo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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 N 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.

Original languageEnglish
Pages (from-to)75-78
Number of pages4
JournalIEEE Signal Processing Letters
Issue number1
Publication statusPublished - Jan 2010


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


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