Abstract: An apparatus for assisting in measuring a color of a target includes an enclosed housing having a first aperture formed in a first end and a second aperture formed in an opposite second end and aligned concentrically with the first aperture, an array of light emitting diodes positioned inside the housing, between the first aperture and the second aperture, and an array of reference colors having known reflectance spectra, the array of reference colors being removably positioned inside the housing, between the array of light emitting diodes and the second aperture.

Abstract: Aligning measurements of fluorescent spectral radiance factors taken by a first instrument with measurements of fluorescent spectral radiance factors taken by a second instrument, without knowledge of the matrix of bispectral luminescent radiance factor of any sample, includes obtaining a fluorescent spectral radiance factor of a reference sample, measured by the first instrument, obtaining the fluorescent spectral radiance factor of the reference sample, measured by the second instrument, obtaining a fluorescent spectral radiance factor of a test sample, measured by the first instrument, and estimating the fluorescent spectral radiance factor of the test sample that would be measured by the second instrument, based on the fluorescent spectral radiance factor of a reference sample, measured by the first instrument, on the fluorescent spectral radiance factor of the reference sample, measured by the second instrument, and on the fluorescent spectral radiance factor of the test sample, measured by the first ins

Abstract: One embodiment of a method for aligning measurements taken by a plurality of color measurement instruments with measurements taken by an industry standard color measurement instrument includes receiving a first set of spectral data from the plurality of instruments, receiving a second set of spectral data from the industry standard instrument, generating initial profiles for the plurality of instruments (by producing, for each given instrument, a first correction that aligns the spectral data taken by the given instrument with the second set of spectral data), mathematically correcting the first set of spectral data using the initial profiles to produce a third set of spectral data, and generating new profiles for the plurality of instruments (by calculating a mean of the third set of spectral data, and producing, for each given instrument, a second correction that aligns the spectral data taken by the given instrument with the mean.

Abstract: A method for evaluating a color of a sample includes acquiring a color calibrated swatch of the sample, the color calibrated swatch comprising a plurality of pixels, and comparing all pixels that are of a first color in a swatch of a standard to all of the plurality of pixels that are of a second color, wherein the second color is a color in the swatch of the sample that is most similar to the first color in the swatch of the standard.

Abstract: The present invention is a microscope slide apparatus and method of use thereof, wherein the slide has an integrated color calibration array of filter elements, each element having a given dimension, each element also having a known transmission spectrum. The complete filter array is observable in the field of view of a microscope under at least one magnification setting of a microscope. The invention further characterized with a secondary integrated filter array that is completely observable at a second magnification setting.

Abstract: The present invention concerns a system and method for calibration and adjustment of the pixel color values represented within a digital image of a sample by a transmission microscope. Furthermore the present invention is directed to providing sufficient color information in order to generate a color mapping matrix that allows for the creation of a synthetic image to depict the sample under a desired illumination. The system and method provides a solution that generates a destination-device independent image that is configurable to any calibrated display device.

Abstract: Aligning measurements taken by a second color measurement instrument with measurements taken by first color measurement instrument, wherein the first instrument has access to a first set of standards but not a second set of standards, and the second instrument has access to the second set of standards but not the first set of standards, includes using a third color measurement instrument to generate a profile that mathematically transforms a value measured on the second set of standards to a value measured on the first set of standards, wherein the third instrument has access to the first and second sets of standards, mathematically transforming measurements of the second set of standards taken by the second instrument into virtual measurements of the first set of standards, using the profile, and aligning the measurements taken by the second instrument to the measurements taken by the first instrument, using the virtual measurements.

Abstract: Adjusting a spatial and/or temporal attribute of an image display device includes measuring a visual change on a display of the image display device, wherein the visual change is caused by an image processing artifact that is introduced or removed, inferring a correlated effect of the attribute on the display, based on the measuring, and generating an adjustment that adjusts the attribute to a setting that is selected based on the effect. Another method for adjusting an attribute of an image display device includes measuring a light volume emitted by a display of the image display device at a plurality of settings of the attribute, identifying one of the plurality of settings at which a greatest change in the light volume is produced with a smallest change in the attribute, and outputting an instruction to set the attribute to the one of the plurality of settings.

Abstract: One embodiment of a method for calibrating a test color measurement device in conjunction with an emissive display includes measuring spectral sensitivities of at least four channels of a more-than-three-channel sensor in the test color measurement device, linearly regressing the spectral sensitivities to a least-square best fit to Commission International de l'Éclairage (CIE) color matching functions, wherein the linearly regressing is performed using a weighting function that is based on a square root of a spectral power distribution characteristic of the emissive display or of a type of the emissive display, and computing a set of initial fitting coefficient values from the linearly regressing.

Abstract: An apparatus and system for providing a solution that enables technicians or other technical professionals obtain both an accurate color value for a sample as well as an accurate gloss value while using a spectrophotometer and an integrated gloss meter device. The present invention allows for accurate color and gloss value analysis of samples using improved compensation values by using a reference sensor to correct the variations in intensity of a light source.

Abstract: A method for evaluating a color of a sample includes acquiring a color calibrated swatch of the sample, the color calibrated swatch comprising a plurality of pixels, and comparing all pixels that are of a first color in a swatch of a standard to all of the plurality of pixels that are of a second color, wherein the second color is a color in the swatch of the sample that is most similar to the first color in the swatch of the standard.

Abstract: In one embodiment, the present invention is a method and apparatus for measuring the focus performance of a camera and lens combination. One embodiment of a test target for measuring a focus performance of a camera and lens combination includes a target body, the target body displaying a pattern including: a primary pattern covering a portion of the target body and a secondary pattern superimposed over a portion of the primary pattern, the secondary pattern being aligned along an edge of the target body. The test target also includes a ruler positioned adjacent to the edge of the target body, a ruler positioned adjacent to the edge of the target body, such that the secondary pattern directly abuts a zero line of the ruler.

Abstract: A method for evaluating a color of a sample includes acquiring an image having a plurality of pixels from a sample and a plurality of pixels from known color calibration patches. The image is color calibrated using the known color patches to endow the pixels from the sample with the tristimulus values they would have under one or more known illuminants. The calibrated image is transmitted, together with metadata, to a remote location where further computations and an approval process are performed. The further computations include comparing all of the pixels in the image of a standard that are of a first color to all pixels of a second color in the similarly calibrated image of the sample, where the second color is a color in the image of the sample that is most similar to the first color from the image of the standard.

Abstract: One embodiment of a method for calibrating a test color measurement device in conjunction with an emissive display includes measuring initial spectral sensitivities of at least four channels of the test color measurement device, linearly regressing the spectral sensitivities to a least-square best fit to CIE color matching functions, measuring CIE tristimulus values of test colors on the display using a reference color measurement device, measuring the CIE tristimulus values on the display using the test color measurement device, transforming the CIE tristimulus values measured by the test color measurement device to CIE tristimulus values that would have been measured by the reference color measurement device, using a nonlinear function with variable fitting coefficients, and storing initial fitting coefficient values that provide a least-square best fit of the CIE tristimulus values measured by the test color measurement device and the CIE tristimulus values measured by the reference color measurement devic

Abstract: In one embodiment, the invention is a spectrophotometer with a modular 45/0 head. One embodiment of an apparatus for measuring a reflectance of a sample includes a plurality of light emitting diodes for emitting light, a reflective housing positioned above the plurality of light emitting diodes, where the reflective housing is a dome having a plurality of apertures formed around its perimeter, a sample channel for capturing a first portion of the light, where the first portion of the light interacts with the sample, and a reference channel for capturing a second portion of the light, where the second portion of the light is independent of the sample.

Abstract: In one embodiment, the present invention is a method and apparatus for matching translucent coatings of absorbent substrates. In one embodiment, a method for matching a color of a sample includes generating a plurality of recipes, each of the recipes representing a mixture of one colorant and a clear vehicle and defining a concentration of the one colorant and a concentration of the clear vehicle, applying each of the recipes to one or more absorbent substrates, determining an absorption value and a scattering value for each of the recipes as applied to the absorbent substrates, storing the recipes in a database, where each of the recipes is stored with an associated absorption value and an associated scattering value, selecting a first recipe from among the recipes stored in the database, and evaluating a quality of the first recipe as a match to the color of the sample.

Abstract: In one embodiment, the present invention is a beaker type dyeing machine. One embodiment of an apparatus for dyeing a material in a beaker includes a cylinder body having a first end and a second end, the first end being configured for coupling to the lid of the beaker, a check valve incorporated into the first end of the cylinder body, and a plug incorporated into the second end of the cylinder body, the plug being operable to control opening and closing of the check valve.

Abstract: A tristimulus colorimeter on a single semiconductor chip having at least three detectors, each detector being coated by colorant filters, each filter having at least one layer and at least one filter having a double layer is provided. The colorimeter determines CIE tristimulus values of an incident light from inputs to the filters and detectors. Colorimeters having integral dye filters may be constructed on a single silicon chip embodying all the detectors and electronics, coated over each detector by a deposited filter layer. Colorants may be directly deposited on the detectors, rather than using a plastic substrate for a filter.

Abstract: A method for determining the optimal colorant thicknesses and linear combinations for integral illuminant-weighted CIE color-matching filters is provided. A reflectance colorimeter for configuring printers may be designed using this method.

Abstract: A method and system for calibrating color rendering devices includes determining a model-specific Digital Target for a first reference color rendering device and a non-CIE color measuring device combination, and implementing the determined model-specific Digital Target for calibrating color rendering devices having substantially similar rendering characteristics as the first reference color rendering device.