International Journal of Telemedicine and Applications / 2009 / Article / Fig 13

Research Article

An Adaptive Source-Channel Coding with Feedback for Progressive Transmission of Medical Images

Figure 13

A decoded image with variable length of parity codes over noisy channel: (a) several error subblocks are detected in stage 1, (b) several error subblocks still are found in stage 2 indicating that the feedback message is incorrect or the channel condition becomes noisier. However, RoI is still error-free based on the UEP. (c) No error subblock is detected in stage 3 because the length of parity is adjusted again according to previous channel state, although there can still be some error. (d) The complete transmitted image with no error subblocks.

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