Apparatus with reduction/magnification image size processing for

Details Apparatus with reduction/magnification image size processing for Apparatus with reduction/magnification image size processing for

1993-10-08

1994-11-15

Powell, Mark R.

Television

Image signal processing circuitry specific to television

348438, H04N 514

Patent

active

053652770

ABSTRACT:
A circuit for filtering an input digital image comprising: first storage apparatus for storing the input digital image; apparatus for retrieving the input digital image from the first storage apparatus and generating a first resized digital image of reduced spatial frequency relative to the input digital image and being of smaller size than the input digital image; second storage apparatus for storing the first resized digital image; apparatus for retrieving the first resized digital image from the second storage apparatus and generating a second resized digital image of equal size to the input digital image, wherein the second resized digital image is a lowpass filtered version of the input digital image due to the reduced spatial frequency of the first resized digital image; and third storage apparatus for storing the second resized digital image.

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patent: 4063060 (1977-12-01), Litch, III
patent: 4163249 (1979-07-01), Michael et al.
patent: 5047857 (1991-09-01), Duffield et al.
patent: 5081450 (1992-01-01), Lucas et al.
patent: 5138452 (1992-08-01), Soloff
patent: 5142616 (1992-08-01), Kellas et al.
patent: 5153936 (1992-10-01), Morris et al.
patent: 5170369 (1992-12-01), Rossum
patent: 5253043 (1993-10-01), Gibson

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