144 results about "Colorimeter" patented technology

The invention discloses a thermal-sensitive paper coating quality image recognition method, system and device and a medium, and relates to the technical field of thermal-sensitive paper coating quality recognized.The method comprises the following steps that an image obtaining scene is established, and a light-transmitting image of to-be-detected thermal-sensitive paper is obtained based on the image obtaining scene and marked as a thermal-sensitive paper light-transmitting image; judging whether the distribution range of the gray values of all the pixel points in the detection gray-scale map is abnormal or not, and if yes, marking the detection gray-scale map as an initial abnormal gray-scale map; judging whether the middle area of the to-be-detected thermo-sensitive paper corresponding to the initial abnormal grey-scale map is sunken or not, and if not, sending out a coating abnormal signal of the to-be-detected thermo-sensitive paper; the method is used for solving the problems that the identification efficiency is low and the obtained overall thermal-sensitive paper coating qualification rate is inaccurate due to the fact that a dynamic color development instrument and a thermal printer are used for detecting the coating quality in an existing thermal-sensitive paper coating quality identification technology.

The utility model discloses an imaging colorimeter and a detection device, the imaging colorimeter comprises a housing, a light filtering module, an image sensor, a photographing module and a control module, a support is arranged in the housing, the photographing module is arranged at the bottom of the housing in a penetrating manner, the light filtering module comprises a driving module and a light filtering disc connected with the output end of the driving module, and the image sensor is arranged in the housing. The driving module is arranged on the support, the filter disc is located between the photographing module and the support, the image sensor is arranged on the support, and the control module is electrically connected with the image sensor, the photographing module and the driving module. When a product is tested, the driving module drives the filter disc to rotate, light received by the photographing module penetrates through the filter disc to be filtered by physical light splitting and then is projected to the image sensor, and the image sensor converts an optical signal into an electric signal and transmits the electric signal to an upper computer. The light is filtered and split, so that the image sensor outputs a color signal which is more suitable for human eye observation, and the accuracy of product testing is improved.

The invention relates to the technical field of color difference correction, in particular to a method for correcting a color measurement result of a colorimeter, which comprises the following steps of: acquiring a sample Lab value, calculating a coordinate index correction matrix, acquiring an original coefficient, inputting segmented regression, extracting characteristics, calculating deviation weighting, and acquiring a regional offset; the method comprises the following steps: acquiring a neighborhood compensation channel offset, calling an offset to adaptively correct the neighborhood compensation channel offset to obtain a boundary front value, performing boundary verification limiting amplitude callback processing to obtain an output result, and updating a knowledge base to accumulate deviation incremental counting to optimize the color measurement precision, in the invention, through regionalization analysis and a piecewise linear regression model, the accuracy and flexibility of color difference correction are improved, and the color measurement accuracy is improved. Through the weighting processing and neighborhood compensation technology, correction inaccuracy caused by large errors is effectively reduced, it is ensured that the corrected measurement value does not exceed a reasonable range, an unstable correction result of a traditional method is avoided, adaptability is high, fault tolerance is high, measurement consistency and reliability of the colorimeter are improved, and the method is suitable for popularization and application. The method has obvious advantages especially in a complex chromatic aberration correction scene.

The invention discloses a colorimeter stimulus value calibration method, system and device and a readable storage medium. The colorimeter stimulus value calibration method, system and device are used for improving the color measurement accuracy of a colorimeter. The method comprises the following steps: establishing a standard stimulation value database; establishing a to-be-calibrated colorimeter database; dividing the to-be-calibrated colorimeter database into a plurality of hexahedrons in a space coordinate system; obtaining a test tristimulus value of the test color through the to-be-calibrated colorimeter; obtaining a target hexahedron to which the test tristimulus value belongs from the plurality of hexahedrons; calculating relative deviation stimulus values of the test tristimulus values in all axial directions of the space coordinate system based on the target hexahedron; obtaining a corresponding standard stimulation value from a standard stimulation value database according to each end point of the target hexahedron; performing preliminary calibration on the relative deviation stimulation value by using a trilinear interpolation method and a standard stimulation value to obtain an intermediate stimulation value; and performing brightness calibration on the intermediate stimulation value to obtain a target stimulation value.

The invention relates to the technical field of multi-spectral colorimeter inter-table difference reduction, and discloses a method and device for reducing multi-spectral colorimeter inter-table difference, electronic equipment and a medium, and the method comprises the steps: measuring a set number of color cards to obtain measurement matrixes of different colorimeters, and then selecting one colorimeter from the preset colorimeter group as a standard colorimeter, taking the rest colorimeters as to-be-calibrated colorimeters, and establishing a conversion relation between the standard measurement matrix and the to-be-calibrated matrix. The method has the beneficial effects that the consistency between the to-be-calibrated colorimeter and the standard colorimeter is greatly improved, the calibration procedure is simplified, the reliability and consistency of the calibrated colorimeter in practical application are also improved, the applicability of the multispectral sensor in the corresponding color measurement field is enhanced, and the method is suitable for popularization and application. The cost performance and application universality of the multispectral colorimeter are remarkably improved, and a more stable and accurate color measurement solution is provided for various industries.

1. The name of the design product: binocular automatic zoom colorimeter. 2. The use of the design product: for optical display system detection instrument. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

Provided in the embodiments of the present disclosure are a luminance and chrominance calibration method and device, and a storage medium. The method comprises: controlling a display screen to display a preset test image, and controlling a colorimeter to collect luminance and chrominance data of the display screen; on the basis of the luminance and chrominance data, generating a smooth gamma table, and iteratively calculating red, green and blue calibration coefficients for each grayscale, so as to obtain a grayscale expansion mapping table; and on the basis of the grayscale expansion mapping table, performing full-grayscale expansion mapping processing on an input image, and controlling the display screen to display an output image that has been subjected to mapping processing. The embodiments of the present disclosure improve the smoothness of grayscale gradients and the color accuracy across all grayscale levels of display, meet both luminance and chrominance calibration requirements and full‑grayscale smoothness requirements, and reduce the calibration time, thereby improving the production efficiency.

The invention provides an automatic detection system and method for an automobile projection lamp, and the system is provided with a testing machine table and an assembling machine table, and a feeding and discharging assembly, a tool carrier and airtightness detection assembly, a laser marking machine and a screw driving assembly are disposed around an annular assembling platform of the assembling machine table. The test platform comprises an imaging colorimeter detection assembly, an electrical performance test assembly and a mobile module, automatic assembly and functional test of the automobile projection lamp can be realized, and pattern detection and product traceability functions are effectively realized.

The invention provides a coffee particle color value detection method and a colorimeter. The method comprises the steps that n color cards are irradiated through a first spectrum light source; the light detector receives the reflected light of the n color cards on the first spectrum light source to form first-class images of the n color cards; respectively acquiring image brightness values of the n color cards according to the first type of images of the n color cards; obtaining color card values of n color cards and a preset function model; according to the image brightness values of the n color cards, the color card values and a preset function model, performing fitting to obtain parameter values of the preset function model; irradiating the coffee particles through a first spectrum light source; light reflected by the coffee particles to the first spectrum light source is received through a light detector to form first-class images of the coffee particles; acquiring an image brightness value of the coffee particles according to the first-class image of the coffee particles; and calculating the chromatic value of the coffee particles according to the image brightness value of the coffee particles, a preset function model and the parameter value. According to the invention, the measurement accuracy and consistency of the chromatic value can be improved.

A device, system, and method are provided for processing an output of a color camera, such that the color camera may be used to measure color uniformity and resolution of an optical system. The processing includes converting an output of the color camera into an XYZ color space using a conversion matrix. The conversion matrix is generated by capturing color images and colorimeter measurements of three different wavelength ranges of light. The processing also includes overcoming the deBayering effect of the color camera to measure a resolution of the optical system using an optical test target displayed by the optical system. The optical test target has a uniform appearance along a direction of homogeneity. The resolution is determined based on a one-dimension image generated by performing a mathematical operation along the direction of homogeneity.

The information processing apparatus obtains information relating to colorimetry from a colorimeter connected to the information processing apparatus; and controls, the colorimeter to execute calibration, based on the obtained information relating to colorimetry.

The invention discloses an imaging colorimeter and a light measurement method, and belongs to the technical field of colorimeters, the colorimeter comprises a colorimeter body, the outside of the colorimeter body is detachably connected with a detection lens, the outer wall of the colorimeter body is provided with a first shading cloth, the tail end of the first shading cloth is detachably connected with a mounting bracket, and the mounting bracket is provided with a light source; a tightening assembly is mounted between the colorimeter body and the mounting bracket, a light-free environment is created through first shading cloth, the shading effect is better through the design of an extension part, a closing plate and a second shading part, the first shading cloth can be pressed through a balancing weight made of a magnet material on the extension part, external ambient light is prevented from entering, and the colorimeter is convenient to use. The device can also be adsorbed on a metal table top or a floor, the wind resistance is improved, and chromaticity calibration can be carried out at any time through a calibration plate arranged on the sealing plate.

A colorimetry device includes a support base having a support surface for supporting a measurement target and a carriage to which a colorimeter is detachably attached and that is configured to move in a first direction, which is a direction along the support surface, and in a second direction, which is a direction along the support surface and which intersects the first direction, the colorimeter being configured to measure color of the measurement target, wherein the carriage includes, on an inner wall of an accommodation section that accommodates the colorimeter, a contact surface that is in contact with a side surface of the colorimeter when the colorimeter is attached or detached and a friction coefficient μ1 between the contact surface and the side surface of the colorimeter is smaller than a friction coefficient μ2 between the housing of the carriage and the side surface of the colorimeter.

The present application relates to an information processing device, an information processing system, an information processing method, a storage medium, and a computer device, and aims to implement color reproduction that prioritizes hue when hue is valued and that prioritizes metallic color sense when metallic color sense is valued. The information processing device of the present application includes: an acquisition unit configured to acquire a colorimetric measurement value obtained by colorimetric measurement of a color patch of a target color with metallic color sense by a colorimeter; a calculation unit configured to calculate at least two or more physical quantities including a metallic color value that indicates the magnitude of metallic color sense and a chroma value that indicates the magnitude of hue, based on the colorimetric measurement value acquired by the acquisition unit; a first determination unit configured to determine the priority order of each of the physical quantities of the target color; and a derivation unit configured to derive the color material amount of a metallic color material of an image forming device and the color material amount of a print color color material from the two or more physical quantities in the priority order.

A method for color control of a printing press using a computer is described, in which spectral data of a substrate are determined using a colorimeter, whereby the spectral data of the substrate are determined in both polarized and unpolarized spectral forms, and the computer performs the color control of the printing press based on the polarized and unpolarized spectral data.

The utility model relates to the technical field of display device measurement, and provides a self-calibration colorimeter device with an adjustable calibration position, which comprises a light splitting module, a calibration module and a detection module, and is characterized in that the light splitting module is used for transmitting a first light ray to the detection module and reflecting a second light ray to the calibration module; the calibration module comprises a point type detection head and a position adjusting mechanism, and the point type detection head is carried on the position adjusting mechanism; when the position adjusting mechanism operates, the position of the point type detection head relative to the light splitting module is changed. According to the device provided by the utility model, the point-type detection head can be driven to displace, multi-point calibration of a detected screen is realized by moving the point-type detection head, and the accuracy and the reliability of measurement of the self-calibration colorimeter are improved.

The invention relates to the technical field of material science and engineering, and discloses a calcium carbonate powder chromaticity detection method, which comprises the following steps of: collecting samples from vertical and horizontal directions by using a tool according to a layering and zoning principle, classifying, pretreating the samples, measuring the samples by using a colorimeter, averaging, and detecting the state of a monitoring instrument; the method comprises the following steps: detecting the chromaticity of the calcium carbonate powder by using a visual colorimetric method, re-detecting or replacing an instrument when the chromaticity is abnormal, switching the visual colorimetric method when the instrument detects the abnormity, operating by multiple persons, and finally comprehensively analyzing the two types of detection data, thereby ensuring that the calcium carbonate powder can obtain accurate chromaticity detection results under different conditions by combining the dual detection means of the instrument detection and the visual colorimetric method; in the instrument detection process, through a real-time monitoring and fault processing mechanism, the abnormal condition of the instrument can be effectively handled, the stability of detection data is ensured, meanwhile, the visual colorimetric method serves as an auxiliary means, reliable reference can be provided when the detection result of the instrument has questions, and the accuracy of the detection result is further verified.

The application discloses a kind of color measurement equipment and its support and control method, it is related to the technical field of color measurement equipment, support includes: support table, installation bracket, first drive unit, detection unit and control unit, support table has the sample placement part to be measured;Installation bracket is set on support table, and installation bracket can be close to or away from the sample placement part to be measured along the first direction;Installation bracket has the mounting structure for installing colorimeter probe;First drive unit is set in installation bracket;First drive unit is configured to drive mounting structure to move along the first direction;Detection unit is set in installation bracket;Detection unit is configured to detect the pressure that colorimeter probe receives;Control unit is electrically connected with detection unit;Control unit is configured to control the operating state of first drive unit based on the pressure that colorimeter receives.The application can prevent the sample to be measured from being deformed under pressure, improve the accuracy of color measurement data.

The invention discloses a nano-signal amplification paper-based sensor for fluorescence / colorimetric bimodal detection of Hg and a preparation method and application of the nano-signal amplification paper-based sensor for fluorescence / colorimetric bimodal detection of Hg. A composite nano-micelle HTPP-PAM-PCL is formed through modular self-assembly of a porphyrin micromolecular probe 4-((5Z, 9E, 10Z, 14Z, 16E, 19Z)-5, 15, 20-triphenyl-1H, 4H-porphyrin-10-yl) phenol HTPP and an amphiphilic polymer PAM-PCL, and the paper-based sensor is used for detecting Hg in a fluorescence / colorimetric bimodal manner. The fluorescence / colorimetric bimodal detection of Hg < 2 + > is realized. Meanwhile, the HTPP-PAM-PCL composite nano-micelle is fixed on filter paper through an impregnation method to prepare a portable paper-based sensor, and fluorescence quenching and color development change are synchronously output; and in combination with a color recognition color picker APP of a smart phone, the change of the RGB value of the test paper is captured to realize real-time quantitative analysis of the concentration of Hg < 2 + > in an actual water sample.

The invention discloses a multispectral calibration method and device of an imaging type colorimeter and a storage medium, which are used for improving the precision of optical detection of a display screen. Setting an integrating sphere light source in the calibration system, and controlling the integrating sphere light source to reach target brightness; adjusting the detection temperature of the calibration system to enable the detection temperature to reach the target temperature; performing waveband separation processing on the light source at the exit port of the integrating sphere light source to generate a plurality of discrete wavebands; acquiring waveband images corresponding to a plurality of discrete wavebands; acquiring spectral radiation data of the integrating sphere light source in different discrete wavebands; calculating a flat field correction coefficient matrix and a brightness calibration coefficient of each discrete wave band according to the wave band image and the spectral radiation data; generating brightness response data according to the wave band images collected at different temperatures; generating a temperature coefficient according to the brightness response data of the reference temperature and the brightness response data of the comparison temperature; and performing brightness response compensation on the band image according to the flat field correction coefficient matrix, the brightness calibration coefficient and the temperature coefficient.

1. The name of the design product: oral natural tooth color measurement colorimeter. 2. The use of the design product: for detecting tooth color. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A color measurement apparatus to which a colorimeter that measures a color of a color measurement target is to be attached in a state in which a color measurement portion is in contact with the color measurement target, includes a carriage that supports the colorimeter, and a scanning mechanism portion that causes the carriage to perform scanning, in which the carriage supports the colorimeter such that the color measurement portion protrudes from a bottom surface of the carriage in a protruding direction toward the color measurement target in a state in which the colorimeter is supported.

This application provides a method and system for measuring the performance of a light source, which improves the convenience of measuring optical performance. The method includes: acquiring a first image; the first image is an image of the brightness detection area when a first attenuator and a first filter are placed directly in front of the lens; performing brightness analysis based on the first image to obtain a brightness calculation result; acquiring a second image, a third image, and a fourth image; the second image is an image of the chromaticity detection area when the first filter and the second attenuator are placed directly in front of the lens; the third image is an image of the chromaticity detection area when the second filter and the second attenuator are placed directly in front of the lens; the fourth image is an image of the chromaticity detection area when the third filter and the second attenuator are placed directly in front of the lens; performing chromaticity analysis based on the second image, the third image, and the fourth image to obtain a chromaticity calculation result; and combining the brightness calculation result and the chromaticity calculation result to obtain a light source performance measurement result.

The application discloses a kind of chromaticity instrument measurement display product chromaticity coordinate area determination method, including (1) chromaticity coordinate stability determination;(2) chromaticity target area optimization;(3) chromaticity target area attribution determination optimization;Traditional stability determination mode is single dimension, CIE1931 original chromaticity coordinate is provided in the form of discrete data with 1nm as wavelength interval, sampling interval is larger, precision is limited, traditional attribution determination is large in amount of calculation for chromaticity diagram of data point dense, according to covariance matrix construction minimum chromaticity ellipse, the spatial distribution characteristics of point set is determined by analysis chromaticity coordinate stability;Original chromaticity point is fitted using piecewise polynomial interpolation, and the coordinate precision is optimized to 0.01nm, two-stage rapid determination strategy is used, first based on polar angle realizes candidate sector preliminary screening, then in the local candidate sector obtained by preliminary screening, accurate determination is carried out using local ray method, and target area positioning of chromaticity coordinate is completed.

The invention belongs to the technical field of ancient building color decoration repair, provides a color picking system for ancient building repair, and aims to solve the problems that traditional color picking is subjective, has no attenuation adaptation and is disjointed with an ancient process. The system comprises five modules: a hardware processing and current color acquisition module for calibrating a color photometer and an environment detector to obtain current color data and an environment attenuation factor; the original color acquisition module measures ores of the same material to obtain original color data; the color decay rule analysis module is used for analyzing a linear relation between time and color decay by using a CL-color grade measurement method; the color attenuation model building module integrates the environment factors into a comprehensive attenuation coefficient K, and a model is built after fitting; according to the method, accurate quantification of the color is realized, experience dependence is reduced, the color matching period is shortened, vulnerable cultural relics are protected, and standardized support is provided for repairing the old as the old.

The utility model relates to the technical field of chromatic aberration measurement, aims to solve the problem of how to improve the color measurement efficiency of dyed products, and provides a colorimeter auxiliary device and a chromatic aberration measurement device. The colorimeter auxiliary device comprises a cover body and a liquid discharge assembly. An opening is formed in the bottom surface of the cover body, the cover body is further provided with a liquid drainage cavity and a waterproof cavity, the liquid drainage cavity is communicated with the opening, the waterproof cavity is located on the side, away from the opening, of the liquid drainage cavity and used for installing a colorimeter, the cover body is provided with a transparent part, and the transparent part is arranged opposite to the opening and separates the liquid drainage cavity and the waterproof cavity. The liquid discharging assembly communicates with the liquid discharging cavity and is used for discharging liquid at the opening through the liquid discharging cavity. The colorimeter has the beneficial effects that the colorimeter can measure the color of a product below the liquid level, so that the product does not need to be taken out from the liquid when the color of the product is measured, and the color measurement efficiency of the dyed product is improved.

This invention relates to a method for color matching of architectural coatings based on particle swarm optimization (PSO) algorithm. The method includes the following steps: using a standard color swatch and a colorimeter, under the same light intensity, light angle, and sampling distance, calibrating the basic color of a display one by one; saving the architectural coating color designed using the calibrated display as a standard color and displaying the standard color on this display; adjusting to obtain multiple different standard colorant ratios; iteratively searching for the optimal standard colorant ratio using the PSO algorithm; and outputting the optimal standard colorant ratio. This invention eliminates the industry's reliance on manual experience in color matching, achieving controllable results for the final product without human intervention; making the experimental process highly directional, quickly obtaining satisfactory results with a small number of iterations and very few samples per iteration; achieving color matching results with much higher accuracy than manual color matching; and enabling large-scale application.

The invention belongs to the technical field of service performance of aero-engine titanium alloy parts, and provides a method and system for calculating the thickness of a titanium alloy ultrathin oxide film through high-temperature color, and the method comprises the steps: carrying out the applicability detection of a surface target region of a titanium alloy part after high-temperature service; for the titanium alloy which passes the applicability detection, the reflection spectrum of the high-temperature color on the surface of the titanium alloy is obtained through a colorimeter, and a warning signal is output for the titanium alloy which does not pass the applicability detection; extracting a wavelength corresponding to the lowest point of reflectivity from the reflection spectrum as a strong absorption wavelength; based on the optical interaction between the oxidation film and the titanium alloy substrate, the quantitative relation between the oxidation film thickness and the strong absorption wavelength is established, and the oxidation film thickness is calculated by adopting the quantitative relation through the strong absorption wavelength. The method realizes rapid and non-contact oxidation film thickness measurement, is suitable for on-site detection of key components on an aero-engine, and has the advantages of high precision, low cost and easy operation.

The utility model discloses a portable vertical support capable of being assembled with an imaging colorimeter, which comprises a base, corresponding vertical supports are arranged on the peripheral surface of the base, four L-shaped supporting frames are detachably connected with the joints of the vertical supports and the base in a staggered manner through SEMS screws, and the four L-shaped supporting frames are arranged on the base. The two colorimeter cross beams are installed between the two vertical supports in a spaced mode, the connecting positions of the colorimeter cross beams and the vertical supports are detachably connected through SEMS screws, and an imaging colorimeter is detachably connected to the middle positions of the two colorimeter cross beams through SEMS screws. The support is arranged to be of a vertical structure, the imaging colorimeter can conveniently and vertically detect the chromaticity and gloss of a product, and compared with a horizontal structure, the detection effect of the vertical structure is improved by 35%; the imaging colorimeter support is arranged to be of a vertical structure, so that a product can be flatly placed on a cushion tool during product detection, further fixation of a clamp is not needed, and the detection efficiency of the imaging colorimeter is improved.