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7616314 |
Methods and apparatuses for determining a color calibration for different spectral light inputs in an imaging apparatus measurement
Methods and apparatuses for determining a color calibration for different spectral light inputs in an imaging apparatus measurement are disclosed herein. In one embodiment, for example, a method...
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7502112 |
Colorimetric device and colour determination process
A hand-held colorimetric device ( 101 ) suitable for use by blind or color-blind individuals to determine the color of a surface-under-test (SUT), for example of a fabric, has an aperture ( 110 )...
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7499163 |
System and method for applying correction factors related to ambient conditions
A method and system for effecting an appearance model correction for a display unit, e.g., a CRT, using a polynomial-based algorithm is described. The correction may be effected in real time and is...
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7477391 |
Miniaturized system and method for measuring optical characteristics
A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer...
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7474402 |
Reflectance sensor for integral illuminant-weighted CIE color matching filters
A tristimulus colorimeter for measuring reflective or transmissive materials is provided. The colorimeter measures a sample under a calibrated light source, receives inputs to detectors, and...
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7420680 |
Method for designing a colorimeter having integral CIE color-matching filters
A method for determining the optimal colorant thicknesses for integral CIE color-matching filters is provided. According to a computational study, a four band filter of the present invention...
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7417735 |
Systems and methods for measuring color and contrast in specular reflective devices
Disclosed herein are systems and methods for measuring color and contrast in specular reflective devices such as interferometric modulators. To make color and contrast determinations, light...
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7394540 |
Methods and apparatuses for applying different color calibrations at different locations in an imaging photometer measurement
Systems and methods for applying different color calibrations at different locations in an imaging photometer measurement are disclosed herein. In one embodiment, a method for measuring a light...
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7391514 |
Colorimeter
A calorimeter for measuring a color of light includes a color sensing device, a suspension means and a counterweight. The suspension means suspends the color sensing device in an operative...
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7369239 |
Light measuring apparatus and method for measuring monochromatic light
A color luminance meter 1 is provided with a polychrometer 4 as a spectral optical system including a light receiving sensor array 43 , a signal processing circuit 5 and an operation control...
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7327458 |
Spectral sensitivity composing system
An output current from each pixel sensor can be extracted at an arbitrary ratio by a current divider. An arithmetic control unit sets the dividing ratio in correspondence to a color matching...
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7312874 |
Apparatus and a method for determining the color stimulus specification of translucent objects
The Apparatus for determining the color stimulus specification of a translucent object, for example of a tooth, comprises an illumination device as well as an image capture device. For illuminating...
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7304740 |
Methods for detecting compression wood in lumber
Methods are provided for detecting compression wood, blue stain, or pitch in lumber. A light beam is projected towards the wood sample. Line or area cameras acquire images of light that is...
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7292949 |
Method and apparatus for estimating surface moisture content of wood chips
Method and apparatus for estimating surface moisture content of wood chips employing a surface moisture measurement obtained from a non-contact surface moisture sensor, which measurement is...
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7283239 |
Method for generating a formula for calculating mottling of a paint film, and a quantification method of the mottling
A method for generating a calculation formula to obtain an accurate mottling value is disclosed. Two-dimensional data and color values of a target paint film are considered. The calculation formula...
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7283238 |
Method and apparatus for matching colours
A portable color sampling device ( 10 ) facilitates comparison of a color sampled from an object using an optical sensor ( 11 ) with a database ( 30,42,43,44 ) of stored colors. The database (...
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7262854 |
Multi-angle colorimeter
In a multi-angle colorimeter having an illumination system that illuminates a sample surface and a plurality of light receiving systems that receive reflected light therefrom, an illumination...
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7218656 |
Control of spectral content of a laser diode light source
In one exemplary embodiment, apparatus is provided with a plurality of laser diodes, sensing means and control means. During normal operation, the laser diodes produce a mixed light. The sensing...
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7212287 |
Providing optical feedback on light color
Optical feedback for controlling color of light from a light source is provided. Incident optical energy of the light is detected as a function of discrete steps of wavelength. For each discrete...
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7177032 |
Device and method for determining the properties of surfaces
A method for determining the properties of surfaces wherein a first process step specified radiation emits from at least one radiation source to a measuring surface, in further process steps the...
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7116408 |
Methods for determining optical properties with measurements having different average optical depths or thickness sensitivities
Optical properties of an object are determined via light provided to the object via a probe tip including a plurality of light source/light receiver pairs. Light is received from a first light...
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7064831 |
Colorimeter with single cable low impact mounting system
A colorimeter that uses its flexible power/electronic cable as a mounting mechanism is disclosed. The colorimeter can be placed against a target screen, suspended by the cable, where the cable in...
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7064830 |
Dental color imaging system
A method for determining visual calorimetric values for an object having particular spectral reflectance characteristics comprises the steps of: (a) photographing an object with an electronic image...
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7030987 |
Colorimeter with high SNR
A colorimeter device and fabrication techniques are disclosed. The assembly and configuration of the device operates to maximize signal-to-noise ratio, as well as to provide an optimal field of...
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7030986 |
Optical measurement device and related process
An instrument and related process for measuring color, shade, gloss, shape and/or translucence of a tooth. First, the instrument uses searchlight illumination to illuminate a tooth with constant...
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7027140 |
Monitor calibrator
A symmetric monitor calibrator for mounting on a cathode ray tube or monitor with a surface. The calibrator has a case that holds electronic and optic components. Suction cups hold the calibrator...
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7016036 |
Method for performing a spectroscopic analysis on a polymer sample, and related articles
A sampling system for performing a spectroscopic analysis on a polymer during its production is described. The system includes a transfer tube capable of transporting the polymer from a production...
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6987567 |
Color evaluation apparatus and method
A spectral distribution error evaluation apparatus is used to evaluate precision of color matching between evaluation and target colors. A first weighting function generator generates a first...
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6947130 |
Method of evaluating whiteness, method of evaluating comparative whiteness, light source and luminaire
In evaluating whiteness of light from a light source or a luminaire, whiteness W is given by the following equation,
W =−5.3 C...
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6940597 |
Method for obtaining an approximate standard color definition for a sample color
A method for obtaining an approximate standard color definition for a sample color ( 2 ) without the need for standard conditions of illumination or observation. The method comprises using color...
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6917429 |
Colorimeter
A colorimeter or color measuring device measures color of a sample or an object, and displays measurement value or values according to user defined index or indices, calculated by a user-defined...
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6806957 |
Method for plain dyeing a textile web of fabric
The invention relates to a method for plain dyeing a textile web of fabric by means of a padding mangle. The squeezing force distribution between the rollers of the padding mangles is controlled...
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6788413 |
METHOD FOR CHARACTERIZING THE APPEARANCE OF A PARTICULAR OBJECT, FOR PREDICTING THE APPEARANCE OF AN OBJECT, AND FOR MANUFACTURING AN OBJECT HAVING A PREDETERMINED APPEARANCE WHICH HAS OPTIONALLY BEEN DETERMINED ON THE BASIS OF A REFERENCE OBJECT
The surface contribution to appearance of an object is characterized using a plurality of viewing and illumination angles. The color determining and surface contribution are determined to aid in...
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6760108 |
Image processing using media white point and black point
An object of the present invention is to realize to excellently perform a color matching process among media having different white points. To achieve the above object, a colorimetry value of a...
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6744513 |
Computer color matching method of paint and preparing method of paint using the same method
A computer color matching method of paint for measuring a proper formulation of colorants for obtaining a target color or color and luster, or a proper formulation of colorants and luster color...
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6687003 |
Method for recording and viewing stereoscopic images in color using multichrome filters
The aim of the invention is to create techniques for the encoding, production and viewing of stereograms, supplemented by methods for selecting certain optical filters needed in these novel...
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6671050 |
Color measuring method and device for printed matter
The indication of correct color evaluation standards of a printed matter including a paper containing a fluorescent whitening agent, is enabled even in the case where the printed matter is observed...
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6661915 |
Illumination variable colorimetric method and colorimeter
A method and apparatus allows mutual comparison of a mode of appearance of a color by the visual sense with a mode of appearance of the color from a calorimetric value from a calorimeters, and...
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6628393 |
Method for determining the shade stability of lacquers
In a method of determining the shade stability of paints, the total color difference ΔE(FT) between the color at the film thickness FT and the color at a predetermined film thickness FT 0 is...
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6614530 |
Method and device for the colorimetric measurement of a colored surface
The present invention relates to a method for the colorimetric measurement of a defined region on an image representing a surface, characterized in that the said image of the said surface is taken...
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6600562 |
Method of extended color sense and estimation for RGB LED illuminants
The invention provides a method of determining tristimulus values for light emitting diode illuminants. A localized transformation matrix is determined based on a set of spectral responsivity data...
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6577395 |
Method for measuring a lighting condition and an apparatus thereof
A method, apparatus and computer-readable medium allows users to measure a lighting condition of an object. In one embodiment, at least one user visually compares colored materials against a...
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6576881 |
Method and system for controlling a light source
A light output control system for implementing a method for sensing the tri-stimulus values for controlling a light output illuminated from an LED based luminary is disclosed. The system comprises...
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6538742 |
Color reproducing system
A color reproduction system includes a color conversion unit for displaying a color image on a multi-primary-color display. The color conversion unit includes a maximum brightness signal...
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6538741 |
Method to evaluate the quality of grapes and relative device
Method and device to evaluate the quality of grapes, comprising a step to evaluate the presence and percentage of coloring substances in the juice by means of emitting an optical signal through the...
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6496597 |
Generating image data
Image data is generated by a process of radiosity, wherein a plurality of elements are defined in three dimensional space. Selected elements are set as being non-occluding and light emission values...
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6441903 |
Optical sensor for illumination mixtures and method for the design thereof
An optical sensor system is provided which provides portions of the intensity spectrum of various types of natural and artificial light and combinations thereof. The illumination passes through a...
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6163377 |
Colorimeter
A colorimeter capable of calibrating color monitors, whether having cathode ray tube or liquid crystal (LCD) displays, is provided by a photometric array of photodetector and optical filter pairs....
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6052194 |
Method and apparatus for controlling the spectral reflectance of a material
A method and apparatus for controlling the color of an article such as a paper web includes performing a comparison between target and measured reflectance values in numerous wavelength bands...
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6028311 |
Rapid non-invasive optical analysis using broad bandpass spectral processing
The present invention provides a generally applicable apparatus and method for achieving measurements of a constituent in a sample. This is achieved by employing a detection means having a...
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