Title :
Multibase/wavelet transform coding of still images without blocking artifacts
Author :
Akopian, David ; Helsingius, Mika ; Astola, Jaakko
Author_Institution :
Signal Process. Lab., Tampere Univ. of Technol., Finland
Abstract :
This paper suggests a method which utilizes the possibility to adjust locally the transform as it was done in the multibase transform coding method and remove blocking artifacts using the multiresolution decomposition by the wavelet transform. Through the combination of two transforms, multibase and wavelet, the advantages of both are utilized. Also a suboptimal technique has been presented to select transforms and entropy coders and the general coding gain expression for the multibase transform has been derived.
Keywords :
entropy codes; image coding; transform coding; wavelet transforms; blocking artifacts; coding gain; entropy coders; image coding; multibase transform coding; multiresolution decomposition; still images; suboptimal technique; wavelet transform coding; Bit rate; Entropy; Image coding; Image reconstruction; Laboratories; Quantization; Signal processing; Signal resolution; Transform coding; Wavelet transforms;
Conference_Titel :
Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-5148-7
DOI :
10.1109/ACSSC.1998.750845