Document Type : Research Paper
Authors
1 collage of Eng., University of Baghdad.
2 Electrical and Electronic Eng. Dept., University of Technology,
Abstract
bstract A fast scheme for multi - wavelet domain interpolation of lost image blocks in wireless image transmission is proposed in this paper . Instead of using common retransmission query protocols , the lost block is reconstructed in the multi - wavelet domain using the correlation between the lost block and its neighbors . The algorithm suggests that each tile is decomposed using a single level 2 - D DMWT ( 2 - Dimension Discrete Multi - Wavelet Transform ) instead of decomposing the tile into three level 2 - D DWT ( 2 - Dimension Discrete Wavelet Transform ) , as stated in the JPEG2000 standard . It can be easily seen that the reconstruction procedure is very simple because it only requires knowing the 2 - D DMWT of the surrounding tiles . Finally , it requires only to average the corresponding decomposed tiles .
Keywords
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