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SPIHT Image Compression Algorithm is modified for Application to Large Images with Limited Processor Memory

S.M. Ramesh, Dr.A. Shanmugam, B. Gomathy

Abstract


The SPIHT image compression algorithm is modified for application to large images with limited processor memory. The subband decomposition coefficients are partitioned into small tree-preserving spatial blocks which are each independently coded using the SPIHT algorithm. The bit streams for each spatial block are assembled into a single final bit stream through one of two packetization schemes. The final bit stream can be embedded in fidelity with a small expense in rate. SPIHT encoding and decoding of the spatial blocks can be done in parallel for real-time video compression.

Keywords


Decomposition, SPIHT Algorithm, Packetization, Sub-Bitstream

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References


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