Boots – shoes – and leggings
Patent
1986-01-29
1988-07-26
Harkcom, Gary V.
Boots, shoes, and leggings
382 53, 382 54, G06F 738, G06K 938
Patent
active
047605413
ABSTRACT:
A point source spatial filter determines the quality of a central point source or pixel under test to thereby detect point sources and minimize the signals from all sources other than the desired point source. The spatial filter incorporates a buffer apparatus for receiving pixel signals, memory apparatus for storing pixel data for the test pixel and surrounding pixels, comparator apparatus for comparing test pixel values against a given number of surrounding pixel values to determine if the test pixel is a local maximum or minimum value, subtraction apparatus for subtracting the value of the nearest-valued surrounding pixel from the test pixel value when the test pixel is determined to be a local maximum or minimum, and apparatus for indicating the difference between the value of the test pixel and that of the surrounding pixel of closest value. This difference value becomes the filter output, and serves to establish a value for the point source signal intensity which is then compared to a threshold to provide a detection flag.
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Kies Richard L.
Pultorak Daniel C.
Weygandt James P.
Baker Carl W.
General Electric Company
Harkcom Gary V.
Lang Richard V.
Mai Tan V.
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