Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1985-05-06
1987-03-17
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 75, 355 38, G03F 308, H04N 146, G03B 2780
Patent
active
046511997
ABSTRACT:
In automatic photographic printers, it is a problem to accurately detect and skip blank (unexposed or completely exposed) film frames automatically. The problem is solved by scanning a film frame in three colors to generate color value samples, compiling histograms of the color value samples, computing the standard deviations of the color histograms, comparing the standard deviations with predetermined constant values, and generating a signal indicating the presence of a blank frame when all the standard deviations are less than their respective predetermined constants. The method is particularly useful in a scanning-type color photographic printer employing histogram modification to effect tone-scale and color balance adjustments.
REFERENCES:
patent: 4239384 (1980-12-01), Treiber
patent: 4410909 (1983-10-01), Ueda et al.
patent: 4467364 (1984-08-01), Konagaya
patent: 4472736 (1984-09-01), Ushio et al.
Close Thomas H.
Eastman Kodak Company
Groody James J.
Svihla Randall S.
LandOfFree
Method for detecting blank frames in a photographic color printe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting blank frames in a photographic color printe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting blank frames in a photographic color printe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1791434