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SPIHT Image Compression Algorithm is Modified for Application to Large Images with Limited Processor Memory
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The SPIHT image compression algorithm is modified for application to large images with limited processor memory. The sub band 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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