Image coding using adaptive-blocksize Princen-Bradley transform

Takashi Mochizuki; Mitsuharu Yano; Takao Nishitani

doi:10.1117/12.50270

1 November 1991 Image coding using adaptive-blocksize Princen-Bradley transform

Takashi Mochizuki, Mitsuharu Yano, Takao Nishitani

Proceedings Volume 1605, Visual Communications and Image Processing '91: Visual Communication; (1991) https://doi.org/10.1117/12.50270
Event: Visual Communications, '91, 1991, Boston, MA, United States

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.

Citation Download Citation

Takashi Mochizuki, Mitsuharu Yano, and Takao Nishitani "Image coding using adaptive-blocksize Princen-Bradley transform", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); https://doi.org/10.1117/12.50270

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