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KMID : 1151820110050060329
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Journal of the Korean Society of Radiology
2011 Volume.5 No. 6 p.329 ~ p.334
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A study on improvement of SPIHT algorithm using redundancy bit removing for medical image
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Park Jae-Hong
Yang Won-Seok
Park Chul-Woo
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Abstract
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This paper presents improvement of compression rate for SPIHT algorithm based on wavelet compression through redundancy bit removing. Proposed SPIHT algorithm uses a method to select of optimized threshold from feature of wavelet transform coefficients and removes sign bit only if coefficient is LL area. Finally Proposed SPIHT algorithm applies to Huffman coding. Experimental results show that the proposed algorithm achieves more improvement bit rate and more fast progressive transmission with low bit rate.
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KEYWORD
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SPIHT, Huffman coding, Wavelet transform
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