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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Edge; Christopher J.
Address:
St. Paul, MN
No. of patents:
32
Patents:












Patent Number Title Of Patent Date Issued
RE39161 Arrangement for mapping colors between imaging systems and method therefor July 11, 2006
A color mapping method is used in transforming colors between color imaging systems. The method includes using forward transformation profiles that characterize the color imaging systems to generate respective sets of device-independent color values for the color imaging systems. Col
RE38180 Recalibrating a multi-color imaging system July 15, 2003
An apparatus and method for calibrating a multi-color imaging system are provided. The multi-color imaging system is capable of applying different colorants to a substrate based on a plurality of input color values. The input color values control amounts of the colorants to be applied to
8570599 Method of characterizing an imaging system October 29, 2013
A method of characterizing an imaging system is described includes printing a color chart having a plurality of predetermined color patches; measuring the color patches to obtain colorimetric data; initializing a Neugebauer model with the Neugebauer solids of said colorimetric data;
8223336 Method for converting digital color images July 17, 2012
A method for characterizing a color in terms of tristimulus values, the method includes providing a source of a color; measuring a set of spectral values for color stimulus associated with the color using a spectral measurement device controlled by a digital processing system; calcul
8203756 Method for characterizing the color response of an imaging device June 19, 2012
A method for characterizing the color response of an imaging device, the method includes reproducing a color on the imaging device based on a set of device color coordinates; measuring spectral values for the reproduced color with a spectral measurement device controlled by a digital
8203712 Method and apparatus for measuring colors June 19, 2012
A color measurement device includes an aperture for obtaining light from a color sample to be measured; a plurality of sets of color filters associated with human observer functions at different regions of color space; at least one detector for measuring the intensity of filtered lig
8031938 Method and apparatus for providing improved human observer XYZ functions and calculations for CI October 4, 2011
A method for determining color-matching functions includes obtaining spectral data originating from metameric pairs and generating new color matching functions by modifying original color matching functions. The new color matching functions are constrained to be similar to the origin
7900144 Modification of color values in page description files March 1, 2011
Modification of color values in a page description file can be carried out by converting implicit color commands within the page description file to explicit color commands. The color values specified by the explicit color commands within the page description file then are adjusted to ca
7773256 Estimating color of colorants mixed on a substrate August 10, 2010
Systems and methods are provided that accurately estimate a post-printing appearance of a color on a substrate. In addition, systems and methods are provided that accurately estimate a post-mixing appearance of several colors mixed on a substrate.
7738148 Techniques for predicting colorimetric measurements of mixed subtractive colors June 15, 2010
This invention provides methods for predicting calorimetric measurements of subtractive colors, in particular, when there is a measurable colorimetric change in one or more individual colorant relative to a set of baseline measurements. The invention is useful for, among other things
7738142 Estimating color of a colorant deposited on a substrate June 15, 2010
Systems and methods are provided that accurately estimate a post-printing appearance of a color on a substrate. In addition, systems and methods are provided that accurately estimate a post-mixing appearance of several colors mixed on a substrate.
7733353 System and method for profiling digital-image input devices June 8, 2010
In a system and a method for profiling a digital-image input device, profiling of the digital-image input device is performed based at least on an image of a color chart and an estimated illumination of the color chart generated by comparing illumination of device-dependent coordinate
7710597 Modified Neugebauer model for halftone imaging systems May 4, 2010
A technique for profiling a color printing device employs a modified Neugebauer color mixing model. The modeling technique makes use of a variable dot gain value and "n factor." The variable dot gain adjustment value may vary according to the particular tristimulus channel under eval
7710432 Color correction techniques for correcting color profiles or a device-independent color space May 4, 2010
According to an embodiment of the present invention, selective tristimulus corrections to device-independent coordinates are applied using a piecewise linear correction function. The piecewise linear correction function is defined such that a maximum of the piecewise linear correctio
7705857 Method and apparatus for characterizing and correcting for hue shifts in saturated colors April 27, 2010
A method for correcting for hue shifts includes parameterizing the conversion of long-medium-short (LMS) spectral sensitivities of the human eye to a human observer function, and applying a non-linear transformation between the LMS and human observer function in order to correct for
7697176 Method and apparatus for chromatic adaptation April 13, 2010
A method for performing chromatic adaptation includes performing chromatic adaptation wherein corrections to tristimulous values XYZ are maximized in the regions of white and neutral and are minimized in the vicinity of non-neutral regions of colors space via piecewise linear corrections
7554705 Color gamut mapping with black point compensation June 30, 2009
The disclosure is directed to techniques for gamut mapping with modified black point compensation (BPC). The gamut mapping techniques promote well-distributed tone compression so that substantial loss of detail in highlight and shadow regions can be avoided. The gamut mapping techniques
7509222 Calibration techniques for imaging devices March 24, 2009
The invention is directed to various calibration techniques for calibrating an imagining device such as a display device, a printer, or a scanner. The techniques may involve characterizing the imaging device with a device model such that an average error between expected outputs dete
7433103 Selective flattening of page description files to support color correction October 7, 2008
An imaging technique permits selective flattening of objects within page description files. The selective aspect of the flattening may pertain to the selection of particular objects to be flattened, selection of the degree of flattening to be applied to objects, or both. In some embo
7382379 Arrangement for mapping colors between imaging systems and method thereof June 3, 2008
A color mapping method is used in transforming colors between color imaging systems. The method includes using forward transformation profiles that characterize the color imaging systems to generate respective sets of device-independent color values for the color imaging systems. Col
7215343 Color correction using a device-dependent display profile May 8, 2007
A method includes obtaining a chromatic correction for a display device based on a device-dependent display profile. The method may ensure that images that appear on a display device in a soft proofing environment will be visually equivalent to images that appear on print media.
7084993 Customer charge accounting in a soft color proofing system August 1, 2006
Techniques for customer charge accounting in a soft proofing system take into account one or more factors associated with a hard copy proofing job simulated by the soft proofing system. The charge for the soft proofing job can be correlated, at least in part, to the overall cost of the h
7016042 Color profiling using gray backing material March 21, 2006
Techniques for producing a color profile that characterize the color response of a color imaging device involve the use of a gray backing material. The gray backing material is placed behind a sheet of output media during measurement of color elements in a reference image formed on t
6775633 Calibration techniques for imaging devices August 10, 2004
The invention is directed to various calibration techniques for calibrating an imagining device such as a display device, a printer, or a scanner. The techniques may involve characterizing the imaging device with a device model such that an average error between expected outputs determin
6362808 Arrangement for mapping colors between imaging systems and method therefor March 26, 2002
A color mapping method is used in transforming colors between color imaging systems. The method includes using forward transformation profiles that characterize the color imaging systems to generate respective sets of device-independent color values for the color imaging systems. Color
6108442 Characterization of color imaging systems August 22, 2000
Characterizing a color imaging system involves generating color values representing colors of output samples of the color imaging system. The color values are converted into a device-independent color coordinate system using an adjustable white reference vector and a black reference
6088038 Arrangement for mapping colors between imaging systems and method therefor July 11, 2000
A color mapping method is used in transforming colors between color imaging systems. The method includes using forward transformation profiles that characterize the color imaging systems to generate respective sets of device-independent color values for the color imaging systems. Color
6027201 Recalibrating a multi-color imaging system February 22, 2000
An apparatus and method for recalibrating a multi-color imaging system are provided. The multi-color imaging system is capable of applying different colorants to a substrate based on a plurality of input color values. The input color values control amounts of the colorants to be applied
5877787 Apparatus for recalibrating a multi-color imaging system March 2, 1999
An apparatus and method for recalibrating a multi-color imaging system are provided. The multi-color imaging system is capable of applying different colorants to a substrate based on a plurality of input color values. The input color values control amounts of the colorants to be applied
5781206 Apparatus and method for recalibrating a multi-color imaging system July 14, 1998
An apparatus and method for recalibrating a multi-color imaging system are provided. The multi-color imaging system is capable of applying different colorants to a substrate based on a plurality of input color values. The input color values control amounts of the colorants to be applied
5754448 System and method for color characterization and transformation May 19, 1998
A system and method for color characterization and transformation obtain color data representing output of a color imaging system, and convert the color data using a color space having a white reference vector that is adjusted during the conversion. The white reference vector can be adju
5303342 Method and apparatus for assembling a composite image from a plurality of data types April 12, 1994
A method and apparatus for combining multiple image data files of differing sizes, resolutions, and formats in real time into a single data stream for conversion into halftone pixel data for printing by either single or multiple beam recording devices. The data of varying formats is rece










 
 
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