  This paper presents the Discrete Wavelet based fusion techniques for
combining perceptually important image features. SPIHT (Set Partitioning in
Hierarchical Trees) algorithm is an efficient method for lossy and lossless
coding of fused image. This paper presents some modifications on the SPIHT
algorithm. It is based on the idea of insignificant correlation of wavelet
coefficient among the medium and high frequency sub bands. In RE-MSPIHT
algorithm, wavelet coefficients are scaled prior to SPIHT coding based on the
sub band importance, with the goal of minimizing the MSE.
