Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1986-03-24
1988-05-17
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 75, 358280, 358284, 355 38, G03F 308, H04N 146, G03B 2780
Patent
active
047454652
ABSTRACT:
A digital color image processing method includes generating color reproduction functions by normalizing samples of color values from the image, and processing the color components of the color digital image by applying the color reproduction functions to the respective color components of the digital image. The samples of color values are selected from the digital image by operating on a luminance component of the digital color image with an image detail detection operator to detect regions of the image representing luminance detail, and operating on the color components of the digital image in the luminance detail regions with a contrast detection filter to detect the contrast of the color components of the image in the luminance detail regions. The color values in the luminance detail regions are separated into contrast intervals and histograms in the contrast intervals are formed. One of the contrast intervals is selected based on the similarity in shape of the color value histograms in the contrast interval. The color reproduction functions are formed by normalizing the histograms in the selected contrast interval.
REFERENCES:
patent: 2972012 (1961-02-01), Farber
patent: 4090243 (1978-05-01), Kotera et al.
patent: 4213150 (1980-07-01), Robinson et al.
patent: 4410909 (1983-10-01), Ueda et al.
patent: 4467364 (1984-08-01), Konagaya
patent: 4472736 (1984-09-01), Ushio et al.
patent: 4553260 (1985-11-01), Belt et al.
patent: 4654722 (1987-03-01), Alkofer
patent: 4667228 (1987-05-01), Kawamura et al.
patent: 4677465 (1987-06-01), Alkofer
patent: 4685143 (1987-08-01), Choate
"Tone Correction of Color Picture by Histogram Modification", by Yoichi Miyake, Nippon Shashin Sakkaishi, V. 48(2), pp. 94-101, 1980.
"A Statistical Method for Image Classification and Tone Reproduction Determination", by R. Chung, Journal of Applied Photographic Engineering, vol. 3, No. 2, Spring, 1977, pp. 74-81.
"A New Approach to Programming in Photomechanical Reproduction", by Yu. Ovchinnikov et al., the 12th IARIGAI Conference Proceedings, Versailles, France, pp. 160-163, 1974.
Close Thomas H.
Eastman Kodak Company
Groody James J.
Svihla Randall S.
LandOfFree
Digital color image processing method employing histogram normal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital color image processing method employing histogram normal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital color image processing method employing histogram normal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1884756