The principle and theory of SLCCA (Significance Linked Connected Component Analysis) coding technology has been further studied in this paper. To enhance SLCCA, we introduce distance-first significance-linked connecte...
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(纸本)9780780397514
The principle and theory of SLCCA (Significance Linked Connected Component Analysis) coding technology has been further studied in this paper. To enhance SLCCA, we introduce distance-first significance-linked connected component analysis and a combined extension and arithmetic code for symbol sequence. An enhanced SLCCA coding system is constructed. Its PSNR performance is compared with both SLCCA and JPEG2000 on numerous 512x512 gray-scale natural images at three different bit rates, i.e., 0.3, 0.6 and 0.9 bits per pixel. On average, SLCCA+ is superior to SLCCA by 0.45 dB and significantly outperforms JPEG2000 by 3.69 dB. Detailed algorithm and further improvement will be given in a separate paper.
Conventionally,in the measurement of the entropy value of a digital signal,only coding redundancy is extensively *** this paper an extensive Markov process,which considers both the coding redundancy and the inter samp...
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Conventionally,in the measurement of the entropy value of a digital signal,only coding redundancy is extensively *** this paper an extensive Markov process,which considers both the coding redundancy and the inter sample redundancy,is presented to measure the entropy value of a digital signal more *** of the extensive Markov process and conventional n repeated applications of m-th order Markov process are studied first in this paper. After that,an extensive Markov system for speech signals is given,where m = n = 3 is *** show that an average of compression ratio Cr being greater than or equal to 3.409 can be *** corresponds to an average of 2.3469 bits/sample or less for each speech signal.
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