Title :
Wavelets and image compression
Author :
Shahshahani, Mehrdad
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The notion of wavelet transforms and their application to image compression are discussed. It is noted that, at higher compression ratios, the performance of the Haar transform based algorithm is visually superior to that of the JPEG DCT-based one. The edges are as clearly defined as for the DCT-based algorithm and the blockiness is significantly less severe than for the latter method. The implementation of this transform and its inversion can be accomplished in integer arithmetic, which makes it desirable for many applications requiring real-time performance
Keywords :
data compression; image processing; wavelet transforms; Haar transform algorithm; JPEG DCT algorithm; compression ratios; image compression; integer arithmetic; inversion; real-time performance; wavelet transforms; Arithmetic; Fourier transforms; Image coding; Laboratories; Propulsion; Space technology; Transform coding; Wavelet analysis; Wavelet coefficients; Wavelet transforms;
Conference_Titel :
Signals, Systems and Computers, 1992. 1992 Conference Record of The Twenty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-3160-0
DOI :
10.1109/ACSSC.1992.269105
