Image analysis – Histogram processing – For setting a threshold
Patent
1993-09-21
1994-05-17
Couso, Yon J.
Image analysis
Histogram processing
For setting a threshold
382 53, 382 62, 358465, 358466, G06K 938
Patent
active
053135334
ABSTRACT:
A bidirectional adaptive thresholding technique for use in an image processing system. An array of pixel sensors scans a grayscale image and generates a set of grayscale image data. A buffer storage connected to the sensors stores the grayscale image data. A forward tracker reads the image data from the buffer storage in a forward direction and provides background and peak forward tracked values. A reverse tracker reads the image data in a reverse direction and provides background and peak reverse tracked values. A threshold level generating circuit generates a threshold level that is a proportional function of either the forward or reverse tracked values based on validity criteria. Thereafter, a thresholding circuit thresholds the grayscale image data using the threshold level to provide binary image data.
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Close Thomas H.
Couso Yon J.
Eastman Kodak Company
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