Abstract
In last decade the transmission of image over wireless network has become challenging. Compressed bit stream of image/video need less storage and bandwidth but highly sensitive to propagation of errors. So error control is an important technique in image/video transmission. This paper proposed multilayered bit stream of JPEG coded image transmission through wireless channel (SUI) using Unequal Error Protection (UEP). The Protection level will be decided based on the importance of layer in retrieval of image. The JPEG image data stream is partitioned into three layers: 1) DC coefficients 2) High informative AC coefficients 3) Low informative AC coefficients. Even with strong error protection applied, in higher noisy environment undetected block error still exists in transmission stream which degrades the image quality. So it requires repairing of block errors. For repairing of block errors first the damaged blocks are detected then repaired using linear interpolation. The simulation results shows quality of recovered image can be improved using different error controlling techniques like UEP and error concealment.
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