Image analysis – Histogram processing – For setting a threshold
Patent
1991-07-18
1994-03-15
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
382 62, 358479, 358518, 358527, 348223, G06K 900, H04N 104
Patent
active
052952045
ABSTRACT:
A scanner useful as an input device for a computer is operable in two scanning modes: a prescanning mode in which subsampled images are composed and rapidly output to the computer for substantially real-time display, and an input scanning mode in which three successive high resolution color separations are obtained and displayed on a computer screen for color balance. A fixed color image is supported on a movable, hand-manipulated stage that interactively controls the conjugate distances of the optical system so that zooming and cropping is obtained in the prescanning mode without losing focus. The input scanning mode provides color separations useful in evaluating color balance. By defining a window overlying a selected area of the displayed color image containing neutral colors, color balance correction factors are automatically obtained for scanning values within the defined area. The exposure times of each of the color separations are then modified by the correction factors in order to preserve dynamic range in the color balanced image.
REFERENCES:
patent: 3848856 (1974-11-01), Reeber et al.
patent: 3993865 (1976-11-01), Browne et al.
patent: 4249197 (1981-02-01), van Spaandock et al.
patent: 4396940 (1983-08-01), Tanaka et al.
patent: 4581761 (1986-04-01), Schinokawa et al.
patent: 4591904 (1986-05-01), Urabe et al.
patent: 4679067 (1987-07-01), Belmares-Sarabia et al.
patent: 4689669 (1987-08-01), Hoshino et al.
patent: 4694329 (1987-09-01), Belmares-Sarabia et al.
patent: 4700218 (1987-10-01), Thomsen et al.
patent: 4706108 (1987-11-01), Kumagai et al.
patent: 4710800 (1987-12-01), Fearing et al.
patent: 4782384 (1988-11-01), Tucker et al.
patent: 4907071 (1990-03-01), Belmares-Sarabia et al.
patent: 4931864 (1990-06-01), Kawamura et al.
patent: 4987485 (1991-01-01), Hirota
patent: 5144419 (1992-09-01), Nakatsuka et al.
Eastman Kodak Company
Johns Andrew W.
Moore David K.
Woods David M.
LandOfFree
Method for color balancing a computer input scanner incorporatin 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 color balancing a computer input scanner incorporatin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for color balancing a computer input scanner incorporatin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1541443