Video signal processing

Details Video signal processing Video signal processing

1986-03-04

1988-09-27

Harkcom, Gary V.

Boots, shoes, and leggings

358 11, 382 45, G09G 106

Patent

active

047746785

ABSTRACT:
Digital video sample values from a first sample domain are mapped to a second sample domain using a mapping function which involves a change in image size, for example, for a digital video effects unit. The apparatus comprises an address generator and a processor for computing, for each sample position in the second sample domain, the position of a point in the first sample domain which, using the mapping function, would map onto that sample position in the second sample domain, and an interpolator for obtaining from available input sample values an interpolated sample value for that point in the first sample domain, the interpolated sample value being used as the sample value for the sample position in that second sample domain.

REFERENCES:
patent: 3882304 (1975-05-01), Walters
patent: 4580134 (1986-04-01), Campbell et al.
patent: 4602285 (1986-07-01), Beaulier et al.
patent: 4618858 (1986-10-01), Belch

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