Neighborhood image processing stage for implementing filtering operations
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United States of America Patent
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-
Sep 10, 1985
Grant Date -
N/A
app pub date -
Feb 27, 1984
filing date -
Feb 27, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A neighborhood transformation stage is designed to perform filtering operations on an image matrix. A group of pixel values in the image matrix are accessed. A series of comparators are used to compare the values of neighboring pixels with the value of a given pixel in the group. The outputs of the comparators are combined to form a vector to address a programmable look-up table. The addressed output of the look-up table is used as a control signal for a selector which either maintains the value of the given pixel or transforms it into another value associated with a neighboring pixel whose value has been ranked in a predetermined order by a rank sorter device used to compare the values of the neighboring pixels with each other.
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