Analysis of discrete wavelet based image compression technique: A review

摘要

In this paper, wavelet based coding algorithm, Set Partitioning in Hierarchical Trees (SPIHT), is considered for encoding and decoding image data. SPIHT uses recursive set partitioning procedure to sort subsets of wavelet coefficient by maximum magnitude with respect to threshold. SPIHT is simple, less complex and has very fast encoding and decoding, making it very efficient in multimedia communication. Numerical results obtained using MATLAB shows that output image has high value of peak signal to noise ratio with good compression ratio for low bit rate.