Title :
Spectral extrapolation in sub-band coding
Author :
Cafforio, Ciro ; Sciascio, Eugenio Di ; Guaragnella, Cataldo
Author_Institution :
Dipt. di Elettrotecnica ed Elettronica, Bari Univ., Italy
Abstract :
We examine how feasible it is to extrapolate high-pass terms from the low-pass sub-image obtained by sub-band decomposition. Only very simple techniques like morphological filtering and contours extraction have been considered at this first stage, attempting to synthesize from the low-pass sub-image the attenuated transitions. The results point out that there is room for further investigation and improvements
Keywords :
extrapolation; feature extraction; filtering theory; image coding; mathematical morphology; spectral analysis; transform coding; algorithm; attenuated transitions; contours extraction; high-pass terms; image synthesis; low-pass subimage; morphological filtering; spectral extrapolation; subband coding; subband decomposition; transform coding; Band pass filters; Bandwidth; Decoding; Digital images; Extrapolation; Filtering; Frequency; Image coding; Image storage; Low pass filters;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555448
