Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1983-04-08
1986-07-22
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358 77, 340731, 340728, 364723, 364724, 382 44, 382 47, H04N 514, G09G 106, G06F 738
Patent
active
046022856
ABSTRACT:
A video transformation and filtering system generates for each source image data point a plurality of target image addresses indicating a displacement between a point at which the source image data point maps into the target image and each data point of the target image which is affected by the source image data point. By providing either sequentially or in parallel a separate processing for each target image data point that is affected by a current source image data point values for all of the target image data points can be generated from a single pass of the source image data points. By effectively providing the filtering in the domain of the target image instead of the source image a single filter function with a fixed number of points in the target image domain can be used to attain low pass filtering of the resulting target image irrespective of the degree of size compression of the video image.
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Gabriel et al, U.S. patent application Ser. No. 310,907, filed Sep. 28, 1981 for "System for Spatially Transforming Images".
Beaulier Daniel A.
Marsh Theodore A.
Ampex Corporation
Chin Tommy P.
Marett Rodney L.
Parker Michael D.
Perkins Bradley A.
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