SPIHT Coding Proposed by Said and Pearlman in 1996 Regard tree as the unit Idea of zerotree A. Said and W. A. Pearlman, “A new, fast, and efficient image codec based on set partitioning in hierarchical trees, ” IEEE Trans. Circuits Syst. Video Technol., vol. 6, no. 3, pp , June 1996.
Two Type Zerotree TYPE A TYPE B
SPIHT Coding Initial threshold = T T=T/2 LIP: List of Insignificant Pixel LIS: List of Insignificant Set LSP: List of Significant Pixel
Compression Performance with Various Filters bppD2D4D6D89-tap9/710/185/39/7M5/11A5/11C13/7C13/7T Lena