219 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 invention discloses a pork quality grade lossless evaluation method based on hyperspectral imaging, and relates to the technical field of pork detection.The pork quality grade lossless evaluation method comprises the following steps that pork samples of different qualities are prepared, and standardization processing is conducted on the pork samples; performing chromatic aberration analysis on the pork samples with different qualities by using a colorimeter, and performing quality grade division on the pork samples with different qualities based on the analysis results of the muscle color, the fat color and the gloss of the pork. According to the pork quality grade lossless evaluation method based on hyperspectral imaging, reflection or transmission information of a pork sample in a plurality of continuous spectral wavebands is captured by using a hyperspectral imaging technology, accurate evaluation of the pork quality grade is realized by analyzing spectral data, higher-dimension data is provided, and the evaluation accuracy of the pork quality grade is improved. Meanwhile, rapid scanning can be achieved, the detection time is greatly shortened, the overall detection efficiency is improved, and pork quality monitoring is more efficient and timely.

The invention discloses a method for laser-induced color texture pattern on titanium surface, comprising: step 1: grinding, polishing and cleaning the titanium alloy surface, drawing a pattern on the titanium alloy surface by using a laser, and continuously adjusting the parameters of the laser until a processing database in which the parameters of the laser and the color of the titanium alloy surface pattern are mutually correlated is obtained; step 2: using a colorimeter to measure and calibrate the color of the pre-drawn pattern with Lab values, calculating the color difference between the color of the pre-drawn pattern and each color in the processing database, and when the color difference is less than or equal to a predetermined value, selecting the parameters of the laser corresponding to the corresponding color for processing; the invention induces the generation of oxide film layers of different thicknesses and types on the titanium surface by a laser heat source with adjustable pulse width, makes the film layer present different colors through the interference, reflection and absorption of light, adjusts the spot size, controls the scanning speed, and is equipped with a high-speed galvanometer scanning system to realize the preparation of various fine patterns.

The invention discloses a spectrum correction type imaging colorimeter and a chromaticity coordinate measuring method. The spectrum correction type imaging colorimeter is used for reducing the rotating angle of a wheel rotating disc when chromaticity coordinates are measured. The colorimeter comprises a colorimeter main body, a wheel rotating disc and a conduction assembly, the wheel rotating disc and the conduction assembly are respectively arranged on the colorimeter main body; a shooting lens and a measuring plate which are adjacent to each other are arranged on the wheel rotating disc, the measuring plate is divided into a first part and a second part, the measuring plate is circular, the circle center of the measuring plate is located in the second part, a reflecting prism is arranged in the first part, and the distance from the geometric center to the rotating center of the reflecting prism is equal to that of the reflecting prism; the distance from the circle center of the shooting lens to the rotation center is equal; the wheel turntable has a shooting position and a measuring position, and at the shooting position, the shooting lens and the incident light path are coaxial; at the measuring position, the wheel rotating disc is controlled to rotate, so that the reflecting prism is coaxial with the incident light path, the reflecting direction of the reflecting prism is coaxial with the arrangement direction of the conduction assembly, and the conduction assembly is used for being connected with a spectrograph.

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 belongs to the technical field of non-setting adhesive label color difference detection, and particularly relates to a non-setting adhesive label color difference detection device which comprises a detection box, a detection table is arranged in the detection box, and a colorimeter is arranged at the top in the detection box and used for measuring the color of a non-setting adhesive label continuously moving on the detection table; two cylindrical cavities are formed in the box bottom below the detection table, and a moving cavity is formed in the top of each cylindrical cavity in an inclined and upward manner; a winding mechanism is arranged in each cylindrical cavity, and the winding mechanisms are used for unwinding and winding the roll-shaped self-adhesive labels; according to the color difference detection device, the rolled self-adhesive label does not need to be cut firstly and then subjected to color difference detection, so that the color difference detection accuracy of the self-adhesive label can be improved, meanwhile, the detected self-adhesive label can be normally used conveniently, and unnecessary waste is avoided.

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 relates to the technical field of material detection, and particularly discloses a rubber composite material color difference evaluation method, which is used for solving the problem of inconvenient detection in the prior art. Comprising the following steps: 1, sample preparation: selecting two or more different rubber composite materials, and preparing a sample with a flat and smooth cross section; step 2, chromaticity testing: using a precision colorimeter, using the test data of the standard plate as a reference, performing chromaticity testing on the cross sections of different rubber composite material samples, and recording the measured data values of the samples; and step 3, analyzing data: analyzing the chromaticity data of the test samples to obtain a color difference value E. According to the method, subjective factors of people are eliminated to a certain extent, and a judgment basis is provided by selecting a low-color-difference formula in the tire tread. In addition, the chromatic aberration of the same sample in different periods can be represented by using a precise colorimeter, and the influence of the precipitation process of small molecular substances in the rubber on the appearance of the rubber material can be observed.

The invention relates to a color grading method for sea sapphire, and belongs to the technical field of gem detection. The method comprises the following steps: dividing color category classification standards of sea sapphire according to colorimetric parameters such as lightness V, saturation S and hue angle H; measuring colorimetric parameters such as lightness V, saturation S and hue angle H of the to-be-classified sea sapphire through a colorimeter; and judging the color level of the to-be-classified sea sapphire according to the colorimetric parameters of the brightness V, the saturation S and the hue angle H of the to-be-classified sea sapphire. According to the method, H, S and V are used for carrying out color category classification on the sea sapphire, and the problem that no uniform standard for quantification exists when color division is carried out on the sea sapphire by naked eyes is solved.

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.