181 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 present invention relates to an AR diffractive optical waveguide rainbow pattern testing device, which includes a Z-axis hollow rotary table, an A-axis rotary displacement table, a hollow waveguide carrier stage, an imaging brightness and chromaticity meter, and an optical generation module. By simulating the usage scenario of the diffractive optical waveguide in a hemispherical space, the present invention acquires and analyzes multi-dimensional information such as the brightness and chromaticity, azimuth angle, solid angle, and position of the rainbow pattern, and has the ability of calibration, achieving the effects of multi-dimensional and high-precision detection and analysis of the rainbow pattern and improving the repeated measurement accuracy.

An image forming apparatus includes an image former that prints a color chart on a sheet, an in-line colorimeter that performs color measurement of color patches formed on the color chart, and an image processor that performs color adjustment based on colorimetric values of the color patches formed on the color chart. The image processor combines multiple divided colorimetric data obtained by performing color measurement of color patterns into which a chart is divided, the chart in which color patches are arrayed to be common to the color chart, and obtains colorimetric values of the color patches formed on the color chart from the multiple divided colorimetric data combined.

The invention discloses a high-precision electronic tooth colorimeter. The high-precision electronic tooth colorimeter comprises a standard light source, an optical fiber probe, a color sensor, an intelligent programmable chip and a liquid crystal display screen, a standard light source and optical fiber color picking technology is adopted, the stability and consistency of the light source are ensured, and ambient light interference is avoided. The color sensor collects RGB original data of tooth reflected light and converts the RGB original data into data of an HSL color space, and the intelligent programmable chip automatically matches the closest color number through an Euclidean distance algorithm of the HSL color space. The system supports an intraoral mode and an extraoral mode, adapts to different colorimetric requirements, supports input functions of different tooth color plate systems, and is more flexible to use. The colorimetric precision and efficiency can be remarkably improved, the rework rate is reduced, the cost is saved, and the satisfaction degree of a patient 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 discloses a colorimeter calibration-based finished product film quality detection method, which comprises the following steps of: S1, acquiring image data of a plurality of positions of a standard finished product film and a to-be-detected finished product film in a target imaging mode, and dividing the image data into a plurality of areas; s2, detecting the image surface colors of the standard finished product film and the to-be-detected finished product film by using a colorimeter; s3, performing digital image processing on the image surface color; and S4, carrying out chromatic aberration calculation on the colors of all the areas of the standard finished film and the finished film to be detected to obtain a chromatic aberration value # imgabs0 # between the finished film to be detected and the standard finished film, and further judging whether the finished film to be detected has a chromatic aberration problem or not. The method can quickly solve the problem of influence on color difference, and improves the standard rate of the finished film.

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.

To determine whether a color material of printed matter has been stabilized in a short time without being affected by a difference in content of the printed matter or a printing condition.SOLUTION: A printing system 10 includes: a printer 100 that prints any printed matter on a printing medium; and a colorimeter 200 that measures a color of the printed matter. The printer includes: a printing part 103; and a print control unit 110 that causes the printing part to print, based on information on the printed matter, a measurement patch to be used for measurement of stabilization of a color material of the printed matter and the printed matter, on the printing medium. The colorimeter includes: a colorimetry part 203; and a colorimetry control unit 211 that causes the colorimetry part to measure the measurement patch and determines, based on an amount of change in color of the measurement patch, whether the color material of the printed matter has been stabilized.SELECTED DRAWING: Figure 2

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 present invention is provided with: a plurality of color sensing units (51)-(54) that comprise a plurality of color filters (511)-(541) and a plurality of light-receiving sensors (512)-(542) for receiving light which has passed through the color filters (511)-(541); a plurality of signal processing circuits (61)-(64) that respectively correspond to the plurality of color sensing units (51)-(54) and have a function for integrating signals input thereto from the color sensing units (51)-(54); and a computation unit (7) that computes outputs from the signal processing circuits (61)-(64). Among the plurality of color sensing units (51)-(54), color sensing units that have spectral sensitivities corresponding to the X component, the Y component, and the Z component of a color-matching function are included, and there are a plurality of second color sensing units (52), (53) that have a spectral sensitivity corresponding to the Y component. Signals from the second color sensing units (52), (53) are processed by the corresponding signal processing circuits (62), (63) and added by the computation unit (7).

The invention relates to an AR diffraction optical waveguide rainbow pattern testing device which comprises a Z-axis hollow rotating table, an A-axis rotating displacement table, a hollow waveguide carrying table, an imaging type brightness and chrominance meter and a light generation module. According to the invention, by simulating the use scene of the diffractive optical waveguide in the hemispherical space, the multi-dimensional information such as the brightness, the azimuth angle, the solid angle and the position of the rainbow pattern is acquired and analyzed, the calibration capability is provided, the multi-dimensional and high-precision detection and analysis of the rainbow pattern are realized, and the effect of improving the repeated measurement precision is achieved.

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.

An apparatus, system, and method are provided for processing an output of a color camera device such that the color camera device can be used to measure color consistency and resolution of an optical system. The processing includes converting an output of the color camera to an XYZ color space using a conversion matrix. A conversion matrix is generated by capturing color images of light of three different wavelength ranges and colorimeter measurements. The processing further includes overcoming the demosaicing effect of the color camera to measure the resolution of the optical system using the optical test target displayed by the optical system. The optical test target has a consistent appearance in the direction of uniformity. A resolution is determined based on a one-dimensional image generated by performing a mathematical operation in a direction of uniformity.

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.

The invention discloses a colorimeter for TFT module production, comprising a light input device, wherein the light input device comprises a lens barrel, a first lens, a light collecting plate, a second lens, a mounting tube and a lamp bead, and is used for collecting light emitted by the TFT module; a first detection device comprises a motor, a polygonal wheel, a first gear, a filter, a mounting column, a first sensor, a slide plate and a spring, and can detect light by a filtering method; a second detection device comprises a prism, a second gear, a first slide rail, a second slide rail, a second sensor, a crank and a connecting rod, and can detect light by an astigmatism method.

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.

An embodiment provides a method for measuring an analyte of a sample using a colorimeter, including: introducing the sample into a measurement chamber of the colorimeter, wherein the measurement chamber comprises an optical path from a light source to an optical sensor; identifying and waiting a sample settling period, wherein the sample settling period comprises a dynamic length of time, wherein the identifying comprises: measuring, using the optical sensor, a light throughput of the sample; and determining, based upon the measuring, the light throughput has reached a stable baseline; and obtaining a reference measurement of the sample when the stable baseline is reached. Other aspects are described and claimed.

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.