Television – Format conversion
Patent
1996-08-07
1999-06-29
Kostak, Victor R.
Television
Format conversion
348584, 348578, 348445, H04N 701, H04N 974
Patent
active
059175494
ABSTRACT:
A method for compositing first and second digital images having different pixel aspect ratios to reduce distortion of image content. The method includes determining a scaling factor from first and second pixel aspect ratios; scaling a first image by the scaling factor; and compositing the first and second images into a composite image. The scaling step may be limited to stretching or squashing the first image in only a horizontal direction. The scaling step may include resampling the first image. In another aspect, the invention features a method for controlling motion along a motion path in a composition having nonsquare pixels. The method includes determining a scaling factor based on the composition pixel aspect ratio; applying the scaling factor to a copy of the motion path; reparameterizing the copy of the motion path to generate a scaled motion mapping; and using the scaled motion mapping to control motion along the motion path. The motion path may define the motion of a layer in the composition.
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Simons David P.
Snibbe Scott S.
Wilk Daniel M.
Adobe Systems Incorporated
Kostak Victor R.
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