Video scaling method and device

A linear interpolator and decimating FIR filter with constant coefficients in various configurations to scale a still or moving color video image horizontally or vertically. For downscaling, the input pixel stream is initially upscaled with an interpolator by an upscaling factor of between one and t...

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Bibliographic Details
Main Authors MALINOWSKI, CHRISTOPHER W, ZEPP, STANLEY R
Format Patent
LanguageEnglish
French
German
Published 01.05.1996
Edition6
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A linear interpolator and decimating FIR filter with constant coefficients in various configurations to scale a still or moving color video image horizontally or vertically. For downscaling, the input pixel stream is initially upscaled with an interpolator by an upscaling factor of between one and two chosen so that the result can be subsequently downscaled with a decimation-by-power-of-two finite impulse response (FIR) filter. Upscaling is accomplished by means of linear interpolation. Vertical and horizontal scaling may be performed with different, independent scaling factors.
Bibliography:Application Number: EP19950113128