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Proceedings Paper

Image coding using adaptive-blocksize Princen-Bradley transform
Author(s): Takashi Mochizuki; Mitsuharu Yano; Takao Nishitani
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Paper Abstract

This paper describes the extension of Princen-Bradley transform,1,2 or MDCT, to a variable blocksize case and its application to image coding. An adaptive window scheme is also introduced and window shape selection mechanism is carefully considered. By introducing an adaptive blocksize and adaptive window scheme into MDCT image coding, the coding efficiency has been improved while maintaining the same high subjective image quality of MDCT coding. General conditions for perfect signal reconstruction of adaptive blocksize MDCT are mathematically derived in the appendix.

Paper Details

Date Published: 1 November 1991
PDF: 11 pages
Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); doi: 10.1117/12.50270
Show Author Affiliations
Takashi Mochizuki, NEC Corp. (Japan)
Mitsuharu Yano, NEC Corp. (Japan)
Takao Nishitani, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 1605:
Visual Communications and Image Processing '91: Visual Communication
Kou-Hu Tzou; Toshio Koga, Editor(s)

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