An Error Concealment Algorithm Using Discrete Wavelet Transform
IRAQI JOURNAL OF COMPUTERS, COMMUNICATIONS, CONTROL AND SYSTEMS ENGINEERING,
2005, Volume 5, Issue 1, Pages 75-87
A new algorithm for error concealment of a completely lost blocks using the 1-D
discrete wavelet transform is proposed in this paper. The transmission of block-coded
images, fading in wireless channels can cause errors in entire blocks and consequently
causes the loss of information of the block. Instead of using common retransmission
query protocols, the error block is substituted for pixel values of the neighborhood of
the lost block.
The proposed algorithm does not require a DC estimation method. While most of the
previously error concealment methods assume that the DC value is available or DC
estimation is required.
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