Programmable video transformation rendering method and apparatus

Details Programmable video transformation rendering method and apparatus Programmable video transformation rendering method and apparatus

1994-05-25

1995-09-05

Groody, James J.

Television

Image signal processing circuitry specific to television

Special effects

348580, 382293, 345133, 345135, H04N 974, H04N 1700, H04N 1702

Patent

active

054483018

ABSTRACT:
A programmable video transformation rendering method and apparatus regenerates an arbitrary reverse address map according to a transformation function representing a desired video effect by using a set of parameters that are run length encoded. Each scan line in target space for an output image is divided into one or more continuous line segments in source space for the input image using a continuous function for each line segment. The parameters for each line segment are determined, encoded, and stored for execution of the transformation function. For each line segment the parameters are updated, with only those parameters needing updated being stored together with the prior parameters that do not need to be updated. The continuous function is in the form of a polynomial equation and is a compromise between the amount of data generated and the calculations required.

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