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Property of Circular Convolution for Subband Image Coding
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E75-A No.7 pp.852-860
Publication Date: 1992/07/20
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Multidimensional Signal Processing)
Category: Image Coding and Compression
subband image coding,
high quality image coding,
Full Text: PDF(780.8KB)
One of the problems with subband image coding is the increase in image sizes caused by filtering. To solve this, it has been proposed to process the filtering by transforming input sequence into a periodic one. Then filtering is implemented by circular convolution. Although this technique solves the problem, there are very strong restrictions, i.e., limitation on the filter type and on the filter bank structure. In this paper, development of this technique is presented. Consequently, any type of linear phase FIR filter and any structure of filter bank can be used.