Title :
Hierarchical image coding with pyramid DPCM
Author :
De Queiroz, Ricardo L. ; Yabu-uti, Jopo B T
Author_Institution :
Dept. de Communicacoes, Univ. Estadual de Campinas, Brazil
Abstract :
The authors apply DPCM (differential pulse code modulation) to pyramid coding strategy, and show that, for practical quantizers, lower bit rates than regular DPCM are required for high-quality resulting images. The pyramid DPCM is relatively simple, feasible, and allows a processing interval between samples that is longer than the sampling interval. A blockwise scheme for multiresolution which could largely decrease the coding bit rate is also discussed
Keywords :
data compression; encoding; picture processing; pulse-code modulation; DPCM; bit rate reduction; blockwise scheme; data compression; differential pulse code modulation; hierarchical image coding; pyramid coding; quantizers; Bit rate; Concurrent computing; Entropy; Frequency; Image coding; Image resolution; Image sampling; Signal resolution; TV; Video compression;
Conference_Titel :
Telecommunications Symposium, 1990. ITS '90 Symposium Record., SBT/IEEE International
Conference_Location :
Rio de Janeiro
DOI :
10.1109/ITS.1990.175666
