Image processing device using high frequency component suppressi

Details Image processing device using high frequency component suppressi Image processing device using high frequency component suppressi

1996-12-11

1999-02-02

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

348415, H04N 730

Patent

active

058672192

ABSTRACT:
An image processing device which receives digital image data compressed in a form of frequency components and applies signal processing to the digital image data is disclosed. The image processing device includes a frequency-component extracting unit extracting the frequency components from the digital image data compressed in a form of the frequency components, a high-frequency suppressing unit suppressing the frequency components if the frequency components are higher than a predetermined frequency, a transformation unit transforming the digital image data from a frequency domain into a spatial domain to produce spatial-domain images, and a decimating unit decimating pixels of the spatial-domain images at a predetermined decimation rate to generate size-reduced images.

REFERENCES:
patent: 4630110 (1986-12-01), Cotton
patent: 5371549 (1994-12-01), Park
patent: 5382972 (1995-01-01), Kannes
patent: 5452103 (1995-09-01), Brusewitz

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