Apparatus for detecting registration error using the image signa

Details Apparatus for detecting registration error using the image signa Apparatus for detecting registration error using the image signa

1991-03-12

1992-12-08

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382 44, 358153, 06K 932, G06K 932

Patent

active

051704412

ABSTRACT:
A registration error detection apparatus which includes a circuit that sums up, for a plurality of adjacent pixels, absolute values of differences between a plurality of image component signals which form a same frame of picture, a circuit which detects the registration error based on the minimum value of the output signals provided by the summing circuit, a first evaluating circuit which evaluates the reliability of the detection result of registration error based on the differential signal between an input test signal and an input reference signal, a second evaluating circuit which evaluates the reliability based on differences between the average value of registration error and individual detection results, a third evaluating circuit which calculates the statistic deviation value of the BPF-processed test signal and the reference signal and evaluating the reliability based on the calculation result, and a circuit which makes a final judgement as to whether the detection result is to be accepted or rejected, based on the results of reliability judgement made by the first through third evaluating circuits.

REFERENCES:
patent: 4685146 (1987-08-01), Fenster et al.
patent: 4858128 (1989-08-01), Nowak
patent: 5046179 (1991-09-01), Uomori et al.

Affiliated with

Also associated with

Rating

Apparatus for detecting registration error using the image signa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for detecting registration error using the image signa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting registration error using the image signa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-965737