Method to convert image resolution using M-band-extended QMF banks

Masahisa Kawashima; Hideyoshi Tominaga

doi:10.1117/12.50251

1 November 1991 Method to convert image resolution using M-band-extended QMF banks

Masahisa Kawashima, Hideyoshi Tominaga

Proceedings Volume 1605, Visual Communications and Image Processing '91: Visual Communication; (1991) https://doi.org/10.1117/12.50251
Event: Visual Communications, '91, 1991, Boston, MA, United States

Abstract

A new method to convert image resolution using M-band extended QMF is proposed. Due to the parallel structure ofthe filter banks, the conversion ratio of the proposed method is not constrained to be a power of 2. Moreover, since theproposed method performs the filtering of signals by convolution operations, the resolution converted image by theproposed scheme is free from the aliasing which occurs in that by the DCT method. Judging from the experimentalresults, it is concluded that the resolution converted image by the proposed scheme is superior to that by the DCTmethod.

Citation Download Citation

Masahisa Kawashima and Hideyoshi Tominaga "Method to convert image resolution using M-band-extended QMF banks", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); https://doi.org/10.1117/12.50251

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