3725563 is referenced by 81 patents and cites 3 patents.

A general method of providing perspective transformations in a visual display system having an image generated by a scanned raster device such as a CRT or television projector is shown. The television display is a window out of which an observer views a simulated picture of terrain. The line of sight from the observer passing through the instantaneous spot position on the window is used to find a ground intersection point, the location of this point on an image source, such as film, is found and a video signal representing that image is generated by positioning the scan of an image pick up device to that point on the image source.

Method of perspective transformation in scanned raster visual display
Application Number
Publication Number
Application Date
December 23, 1971
Publication Date
April 3, 1973
Woycechowsky Brian J
The Singer Company
G01s 07/20
H04n 03/30
G09b 09/08
G09B 09/30
G09B 09/02
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