Image analysis – Histogram processing – For setting a threshold
Patent
1984-06-14
1986-09-23
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
358284, 382 27, 382 31, G06K 940
Patent
active
046139869
ABSTRACT:
An apparatus and method for scanning a document image in an m.times.n matrix. The device includes a sensing array for sequentially sensing along a scan line, elements along one dimension of the matrix, registers for sequentially storing sensed elements for a selected number of scan lines, and a circuit for effecting a scan line delay between sequential scan lines. Registers are also provided for effecting an element delay in all of the stored scanned lines along the other dimension of the matrix wherein the element delay is responsive to a sequential sensing of a matrix element. Selected matrix elements are combined with selected weighting factors for enhancing the document image being scanned.
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Ataman Ergin
King J. Thomas
Boudreau Leo H.
Cavender J. T.
Dugas Edward
Gonzalez Floyd A.
Mancuso Joseph
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