Object inspection method employing selection of discerning featu

Details Object inspection method employing selection of discerning featu Object inspection method employing selection of discerning featu

1992-05-20

1995-02-21

Razavi, Michael T.

Image analysis

Histogram processing

For setting a threshold

382 34, G06K 946, G06K 968

Patent

active

053923642

ABSTRACT:
A method for discerning whether an object to be inspected is acceptable or not is based on feature values with respect to a binary-coded image of the object. The method includes the steps of coding image data of the object into binary digits to obtain the binary-coded image, calculating at least three feature values based on a predetermined sample group of acceptable objects and a predetermined sample group of unacceptable objects, obtaining a Mahalanobis' generalized distance between the sample groups of the acceptable objects and the unacceptable objects with respect to each of the calculated feature values, comparing each of the distances with a first predetermined value and then selecting as a first representative feature value the distance which is not smaller than the first predetermined value, obtaining a Mahalanobis' generalized distance between groups of acceptable objects and unacceptable objects with respect to the feature values except for the feature value selected as the first representative feature value and the first representative feature value, and comparing each of the distances with a second predetermined value and then selecting as a second representative feature value the distance which is not smaller than the second predetermined value, so that it is discerned whether the object is acceptable or not based on the first and/or first and second feature values with respect to the binary-coded image of the object.

REFERENCES:
patent: 4066999 (1978-01-01), Spanjersberg
patent: 4441205 (1984-04-01), Berkin et al.
patent: 4658429 (1987-04-01), Orita et al.
patent: 5042073 (1991-08-01), Collot et al.
patent: 5046111 (1991-09-01), Cox et al.
patent: 5161204 (1992-11-01), Hutcheson et al.

Affiliated with

Also associated with

Rating

Object inspection method employing selection of discerning featu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Object inspection method employing selection of discerning featu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Object inspection method employing selection of discerning featu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1940716