On Optimal Tiling of the Spectrum in Subband Image Compression
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چکیده
The performance of subband image coders depends on the proper choice of frequency partitioning in the sub-band domain. It is therefore desirable to have an adap-tive nonuniform lter bank to cope with the frequency characteristics of the image at hand. However, a good choice, if a nonadaptive structure is to be used, is combinations of uniform parallel and octave-band tree-structured lter banks. In this paper, uniform parallel (8-channel, 32-tap), and 3-stage and 6-stage octave-band tree-structured systems are compared using a xed rate coder for image coding purposes. Favorable results are obtained using the combination of a parallel lter bank and a tree-structured system. The coding results are comparable to the \best" results reported in the literature.
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تاریخ انتشار 1997