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This paper presents two error concealment (EC) techniques for embedded wavelet codec based on set portioning in hierarchal trees (SPIHT), one for the lowest frequency wavelet coefficients (the low-frequency EC) and the other for high frequency coefficients (the high-frequency EC). The low frequency EC algorithm uses data hiding technique. The lowest frequency coefficients, which are taken as the hidden...
This paper presents an error protection method for embedded wavelet codec by combining data hiding with error concealment. For the lowest frequency coefficients, a protection scheme based data hiding is performed. The lowest frequency coefficients, which are taken as the hidden data, are extracted from the compressed bitstream, and embedded back into the same bitstream. The restored hidden data is...
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