Methods and apparatus for dynamically scaling images
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United States of America Patent
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May 28, 1991
Grant Date -
N/A
app pub date -
Jul 10, 1989
filing date -
Jul 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An image processing system is disclosed in which the various image processing circuits are arranged in a pipeline such that the output of each circuit is passed on to the next circuit in the pipeline without storing the data between circuits of the pipeline. The individual processing circuits are program-controlled by a common controller in order to properly synchronize various operations such as scanning, compressing, expanding, rescaling, windowing and rotating. The rescaling operation is carried out by executing a sequence of program instructions applying to single pixels, or to single lines of the image. These instructions include deletion, duplication and passing through of the image element. Windowing is provided by inserting start-of-window and end-of-window instructions in the appropriate places in the sequence of rescaling instructions.
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