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7626728 |
Method and apparatus for calcuating color differences on measured evaluation charts to evaluate color reproducibility considering image homogeneity
Color reproducibility needs to be evaluated in consideration of the influence of homogeneity in page image. Hence, a first chart is formed from an image of a uniform density of a region to be...
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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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7599559 |
Method for collecting data for color measurements from a digital electronic image capturing device or system
A method for providing an intensity or brightness measurement using a digital image-capturing device comprising: selecting a target area within a field of view of the image-capturing device, the...
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7557925 |
Optical instrument and parts thereof for optimally defining light pathways
An optical assembly is disclosed that includes an illumination source, a detection sensor, a monitor sensor, and an optical piece having a first side adapted to face a sample. The optical piece...
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7557924 |
Apparatus and methods for facilitating calibration of an optical instrument
An optical system comprising an optical instrument and a processing unit. The optical instrument may comprise an illumination source and a sensor. The processing unit may comprise a data storage...
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7548316 |
System and method for lead edge and trail edge sheet constraint and curl sensing
A lead edge and/or trail edge sheet curl sensing and constraint method and system. First and second light emitters and detector pairs are aligned such that the light beams from the first light...
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7528361 |
Semiconductor opto device having optodiode with adapted spectral sensitivity
A semiconductor opto device is disclosed. One embodiment provides an optodiode. The optodiode has a relative spectral sensitivity that is adapted to the relative spectral sensitivity of an eye,...
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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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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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7443508 |
Spectrophotometric scanner
A spectrophotometric scanner suitable for producing spectral reflectance images of surfaces of samples for a plurality of wavelength bands is disclosed. The spectrophotometric scanner comprises a...
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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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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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7341450 |
Tooth shade scan system and method
A tooth shade scan system is provided that identifies tooth shades for a patient's tooth. An electronic database of tooth shade information for a shade guide may be stored. The database may include...
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7339673 |
Miniature optical readhead for optical diagnostic device
A miniature readhead for a photometric diagnostic instrument includes a housing of hand-held form factor, configured for receiving reagent sample media therein. The sample media has a plurality of...
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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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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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7271910 |
Systems and methods for compensating for temperature induced spectral emission variations in LED based color parameter measuring devices
Systems and method provide compensation for temperature induced peak wavelength shift of LEDs is color parameter measuring systems that use a model to reconstruct target color parameter values from...
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7251031 |
Colorstick
A device comprising an illumination means and a light sensing means, that can examine and memorize a discrete color of an object based on the magnitude of the reflected light bouncing off of the...
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7227640 |
Photoelectric sensor
A photoelectric sensor includes a light-emitting element and a light-receiving element and detects a mark on an object. Prior to the detection of the mark, a reference received light quantity level...
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7206072 |
Light source type discriminating method, image forming method, method and apparatus for estimating light source energy distribution, and exposure amount determining method
The discriminating method utilizes first to third sensors respectively having spectral sensitivities corresponding to three primary colors and a fourth sensor having a spectral sensitivity that...
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7193716 |
Arrangement of color filters for characterizing the color of an aggregate light
In one embodiment, a plurality of color filters arranged in an N×N array. The color filters comprise equal numbers of color filters for each of three or more different colors. The color filters...
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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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7132644 |
Photo sensor for standardized color measurement
The invention is directed to a photosensor for color measurement based on three spectral components, particularly for highly accurate color measurement for testing and guaranteeing color constancy...
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7130050 |
Device of verifying and reading color, and a process of verifying and reading color in liquids
A device for verifying and reading color, particularly used in reading the color of a liquid, the device comprising: a) a guide tube ( 10 ); and (b) at least one pair of liquid detection sensors (...
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7113283 |
Apparatus and method for measuring color
Color measuring systems and methods are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object...
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7113280 |
Dye detection method and apparatus
Method and apparatus for detecting the presence of a color dye in a water sample are described. Light is generated and passed through a water sample. A color sensor is utilized to measure the light...
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7064832 |
Color and intensity measuring module for test of light emitting components by automated test equipment
A test module used to verify the correct placement of light-emitting devices on electronic assemblies, by performing color and luminous intensity tests on these devices. The module includes one or...
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6983060 |
Method to measure degree and homogeneity of alumina calcination
A method for measuring degree and homogeneity of calcination of alumina utilizing an image analysis device equipped with a sensitive camera in a spectral analysis window corresponding to a...
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6900471 |
Method for defining the color group of an LED and LED module
Method for defining the color group of an LED which emits mixed-color, in particular white, light. The CIE color space is divided by means of a network with two sets of intersecting network lines,...
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6868371 |
System and method to quantify appearance defects in molded plastic parts
A spatially-resolved spectrometer is used to measure streaking in molded sample plastic parts produced using a molding tool with various mold inserts which produce certain desired topological...
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6844931 |
Spectrophotometer and its use
A spectrophotometer including an optical measurement head, a spectrometer and a control electronic. The measurement head is equipped with a multi-channel illumination arrangement having exclusively...
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6798517 |
Handheld, portable color measuring device with display
A handheld, portable color measuring device for measuring the primary colors of red, green and blue in a color target to be analyzed and connected to a built-in LCD display or connected to a...
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6784996 |
Color sorting apparatus for granular object with optical detection device consisting of CCD linear sensor
An optical detection device for use in a color sorting apparatus for granular objects includes a CCD linear sensor. The CCD linear sensor comprises a plurality of light receiving elements arranged...
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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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6744514 |
Process and arrangement for detecting or recognizing an object
The invention relates to a process and a device for detecting or recognizing an object by means of color recognition or brightness evaluation, whereby radiation emitted by a radiation source on the...
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6741351 |
LED luminaire with light sensor configurations for optical feedback
White light emitting LED luminaire incorporates an array of red, green and blue emitting LEDs and a feedback arrangement to maintain a desired color balance. The feedback arrangement includes...
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6740154 |
Paint colorant product and method
A neutral paint colorant has a composition comprising approximately 7.0% Color Index Pigment Yellow 42, 2.4% Color Index Pigment Red 101, and 4.0% Color Index Pigment Black 7. A pre-blended mixture...
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6732917 |
Apparatus for automatic measurement of measuring fields
A device (strip reader) for an automatic photoelectric measurement of measuring fields contained on a sheet or strip-shaped, opaque or transparent original comprising a housing, transport members...
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6704108 |
3D grating optical sensor comprising a diffusion plate for conducting chromatometry with color constancy performance
A grating optical sensor includes: a lens imaging an object space; a diffractive hexagonal 3D grating optical modulator in the image plane of the lens to form at least one trichromatic RGB...
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6674530 |
Portable colorimeter
A handheld, pen-like colorimeter for measuring the color of an object is provided. The invention includes three light sensors, each of which detects a separate primary color. A microprocessor in...
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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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6594014 |
Color detecting sensor and method for ink ribbon
A color detecting sensor includes a light emitting element for emitting red light, a light emitting element for emitting green light, a light emitting element for emitting blue light, a light...
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6590659 |
Cable identifier apparatus and method
The invention is a cable identifier apparatus and a method for fast identification of multi-wire or multi fiber cable. The method is based on illumination of colored buffer of the wire or fiber,...
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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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6567170 |
Simultaneous plural colors analysis spectrophotometer
A low cost yet higher speed color spectrophotometer, especially suitable for on-line color printer color control systems, wherein multiple test patches of different colors may be simultaneously...
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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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6535287 |
Color identifying device
Difficulty recognizing colors which a sight-impaired person has is solved by a color identifying device of the invention comprising a means for identifying a color by comparing data measured by...
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6525819 |
Colorimeter for dental applications
The invention is a colorimeter for dental applications comprising a hand-held probe, similar in size to a dental drill, attached by an electrical cable to a small self-contained display module. The...
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