Method for determining binary coding threshold value

Details Method for determining binary coding threshold value Method for determining binary coding threshold value

1987-11-25

1990-09-25

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 50, G06K 938

Patent

active

049598694

ABSTRACT:
A method for determining a binary coding threshold value for a target object comprises determining reference binarization characteristic values for each reference object, storing the reference values in a memory, selecting the reference value associated with a reference object corresponding to the target object, generating in a learning procedure a histogram corresponding to the selected reference value, extracting feature data, i.e., binarization characteristic values, in a threshold control step from the histogram, and setting the binary coding threshold value to a predetermined weight mean value calculated from the binarization characteristics. 7257

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"Boundary Extraction Method and Algorithm", IBM Tech. Disclosure, Chow et al., pp. 1301-1304, Sep. 1971.

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