Title :
Entropy-coded hybrid differential pulse-code modulation
Author :
Nasrabadi, Nasser M. ; Pal, Sankar K. ; King, Robert A.R.
Author_Institution :
Imperial College of Science & Technology, Electrical Engineering Department, London, UK
Abstract :
A hybrid differential pulse-code-modulation (DPCM) system is presented to demonstrate the application of fuzzy set theory in data compression. The system involves entropy coding, Laplacian quantiser and fuzzy enhancement operations as applied on the DPCM signal. Saving of about 0.5 bit is found to be obtained when a DPCM signal is quantised to 32-level, and then Huffman-coded.
Keywords :
data compression; fuzzy set theory; picture processing; pulse-code modulation; Laplacian quantiser; data compression; entropy-coded hybrid differential PCM; fuzzy set theory;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830047
