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Teresa Hinkle Phones & Addresses

  • Hawthorne, CA

Publications

Us Patents

Automatic Mask Threshold

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US Patent:
52610101, Nov 9, 1993
Filed:
Sep 27, 1991
Appl. No.:
7/766318
Inventors:
Thomas K. Lo - Temple City CA
Teresa A. Hinkle - Madison AL
Lop G. Ng - Encino CA
Assignee:
Hughes Aircraft Comany - Los Angeles CA
International Classification:
G06K 962
G06K 964
G06K 968
US Classification:
382 42
Abstract:
An improved method for finding the mask threshold for a maskable bilevel correlator operates on a series of frames of information. Beginning with an initial threshold, two rates are computed. The rate of change of the correlation peak magnitude P. sub. (T), a function of threshold T, with respect to the change in the value of the mask threshold T, or (dP. sub. (T) /dT), and the corresponding rate of change of correlation reference pixels with magnitude exceeding the mask threshold, U. sub. (T), a function of threshold T, with respect to the change in the value of the mask threshold T, or (dU. sub. (T) /dT), are measured. The correct, or best, value of the threshold occurs when. vertline. dP. sub. (T) /dT. vertline. gtoreq. 5*. vertline. dU. sub. (T) /dT. vertline.
Teresa A Hinkle from Hawthorne, CA, age ~60 Get Report