Separable subsampling of digital image data with general periodi

Facsimile and static presentation processing – Static presentation processing – Attribute control

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358 21R, H04N 1106

Patent

active

052803430

ABSTRACT:
General periodic, non-rectangular subsampling of color image data is accomplished with separable filters by convolving a periodically upsampled version of the color image with rotated one-dimensional filters and subsampling in a raster format.

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