328results about "Color measuring devices" patented technology

The invention provides a printing color consistency automatic calibration and management system and method, and the method comprises the steps: collecting a current environment temperature and humidity ink matching parameter density curve data dot increase compensation parameter in real time through a state detection device, and forming a current state data set; performing similarity analysis on the reference data set and the current state data set by adopting a matching degree evaluation algorithm, and judging a relationship between a matching degree numerical value and a preset threshold value; adjusting and correcting the calibration reference value and the color control parameter in the reference data set according to the offset compensation set to obtain a compensated and adjusted parameter set; on the basis of the compensated and adjusted parameter set, generating update code data by combining a current time identifier and an operator identifier, and forming new two-dimensional code information; and outputting the new two-dimensional code information to a subsequent work order carrier by adopting a code generation module, and establishing a parameter transmission tracing chain.

The invention relates to the technical field of color detection, in particular to a color difference calculation optimization method and system for archaized linen viscose reactive dyeing. Comprising the following steps: monitoring a fabric motion state in real time, calculating a motion speed and displacement, and determining a spectrum acquisition opportunity and a position compensation parameter; illuminating the surface of the to-be-detected fabric at an acquisition position through a polarized light source, and performing polarized spectrum data acquisition in the normal direction of the surface of the fabric to obtain reflection spectrum information; exciting the surface of the to-be-detected fabric by adopting an ultraviolet light source, collecting fluorescence spectrum data, and identifying different fiber areas; calculating fiber density distribution in the fiber area, and constructing a layered weight system; calculating chromatic aberration of the fiber area based on the reflection spectrum information, extracting chromatic aberration characteristics, and measuring and calculating an antique degree quantification result; setting a color difference threshold value standard according to an antique degree quantification result, and adjusting a color difference threshold value according to an evolution trend; and based on the layered weight system and the chromatic aberration threshold, performing weighted calculation on the chromatic aberration value of the fiber region to obtain a comprehensive chromatic aberration evaluation result.

The invention discloses color difference detection equipment and process for production of high-wear-resistance regenerated polyester dyed cloth, and relates to the technical field of color difference detection equipment. Comprising a rack main body, a control main body is arranged at the front end of the rack main body, the rack main body is provided with a mounting mechanism for color difference detection for high-wear-resistance regenerated polyester dyed cloth production, and the mounting mechanism comprises a detection assembly and a control assembly, according to the invention, a red, green and blue three-primary-color narrow-band optical filter is adopted, and a second bevel gear and a worm connected with the second bevel gear are driven to rotate through meshing; the worm is meshed with a worm gear on the outer wall of the vertical shaft to drive the vertical shaft to rotate, and then the connecting rod drives the three sets of mounting frames to rotate synchronously, so that optical filter switching is achieved, the cloth cover chromatic aberration performance in different illumination environments can be simulated, the detection result is more accurate and comprehensive, the detection error caused by single illumination is reduced, and the detection efficiency is improved. And the comprehensiveness and the accuracy of chromatic aberration detection are improved.

The invention provides a lens optical fiber array coupling system and a chromaticity measurement system and method, and belongs to the field of chromaticity measurement, and the lens optical fiber array coupling system comprises an imaging lens which is used for obtaining incident light of an object to be measured and guiding the incident light to an array optical fiber; the end face of the array optical fiber is located on the first image plane of the imaging lens, the normal of at least part of the optical fiber end face in the array optical fiber has a deflection angle relative to the normal of the first image plane, and the deflection angle is angle deflection performed by taking the main light ray of the light received by the corresponding optical fiber position as a target reference; and the imaging spectrometer is used for receiving the light information sent by the array optical fiber. By setting the deflection angle of the array optical fiber, the effective receiving area of the optical fiber is maximized, and the change of the transmission efficiency of light of different wavebands is avoided.

A spectral sensing device and associated methods for enhanced diagnostic capabilities across medical fields are disclosed. The device incorporates multispectral, hyperspectral, and photoplethysmography technologies to analyze biological features including tongue, oral cavity, saliva, teeth, and other tissues. The system transforms any standard RGB camera into a multispectral imaging device by training machine learning models to associate RGB values with spectral values inside and outside the visible spectrum using measurements from a single pixel detector spectroradiometer. A multimodal neural network with separate processing branches analyzes spectral images, non-spectral images, and tabular data to predict microbiome composition. The system generates health risk assessments by comparing predicted microbial abundances to thresholds associated with various medical conditions. Near-infrared sensing enables blood flow monitoring, subcutaneous imaging, and assessment of physiological parameters. Convolutional neural networks enable spectral reconstruction without requiring the physical device, while supporting continuous monitoring in various form factors.

A computer-implemented method suitable for evaluating a progressive spectacle lens and a corresponding computer are provided. Measurement data indicative of at least one of color or transmittance along a plurality of measurement points across at least one line of a spectacle lens is received. The method further includes calculating scalar values representing differences between measurement data of adjacent or overlapping sets of measurement points of the plurality of measurement points. The spectacle lenses are then evaluated based on the scalar values.

To provide a multispectral sensor array.SOLUTION: A combination of a ranging sensor channel (e.g., a LIDAR sensor channel) and an ambient-light sensor channel tuned to detect ambient light having a channel-specific characteristic (e.g., color). The sensor channels can be arranged and spaced to provide a multispectral image of the field of view in which multispectral images from different sensors are essentially aligned with one another to define an array of multispectral image pixels. Various optical elements may be provided to facilitate the imaging operation. A light ranging / imaging system incorporating a multispectral sensor array can be operated in a rotational mode and / or a static mode.SELECTED DRAWING: Figure 2

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.

The present disclosure relates to an automatic two-component resin inspection device for automatically determining in real time whether a two-component resin injected into a battery module is normal, an automatic two-component resin inspection system including the same, and an automatic two-component resin inspection method. An automatic two-component resin inspection device according to an embodiment of the present technology includes a housing with an open lower part, a lighting unit configured to emit light toward the open lower part of the housing, a camera unit configured to obtain a resin image by photographing a two-component resin injected into a battery module under the open lower part of the housing, and a determiner configured to determine whether the two-component resin injected into the battery module is normal on the basis of color information of the resin image obtained by the camera unit.

The system according to the embodiment aims to provide a simple and easy way to perform a personal color diagnosis. [Solution] A system according to an embodiment includes a photographing unit, an analysis unit, and a providing unit. The photographing unit automatically starts photographing when a user enters a Box. The analysis unit analyzes the image photographed by the photographing unit and diagnoses the user's personal color. The providing unit provides the user with the results of the diagnosis by the analysis unit.

It suppresses false detections caused by foreign objects. [Solution] This is a liquid state sensor (1) that is installed in the middle of a pipe. It comprises a connection section (31, 32) having a main flow path (20) that relays the flow path of the pipe, a branch section (33a~33c, 34, 11) having a bypass flow path (21) branched off from the main flow path 20, and a detection unit (13) that detects the color of light transmitted through the liquid flowing through the bypass flow path (21). The flow path cross-section of the bypass flow path (21) is formed to be smaller than the flow path cross-section of the main flow path (20), and the detection unit (13) is installed on the side of the bypass flow path (21).

A computer implemented method of determining a property of an unknown tobacco sample (26) comprising using hyperspectral imaging in combination with a machine-learning-based prediction framework. The method comprises: creating a first, reference spectral fingerprint dataset by scanning a plurality of known tobacco samples (26) using hyperspectral imaging techniques, generating hyperspectral images of each of said known tobacco samples and forming a reference spectral fingerprint, and storing each of said reference spectral fingerprints into said first, reference spectral fingerprint dataset. The method also comprises providing a second, known property, dataset, comprising known properties / compositions of said known tobacco sample, and inputting said first, reference spectral fingerprint dataset and said second, known property, dataset into said machine learning-based prediction framework. The method further comprises via said machine learning- based prediction framework, correlating said first, spectral fingerprint dataset with said known property or properties of said second, known property, dataset; said machine-learning based prediction framework generating a prediction model that is configured to determine one or more mathematical functions based on said first reference spectral fingerprint dataset, and said second, known property dataset. The method further comprises generating (100) hyperspectral images of said unknown tobacco sample (26), and based on said hyperspectral images of said unknown tobacco sample, generating a spectral fingerprint of said unknown tobacco sample. The method also comprises inputting said spectral fingerprint of said unknown tobacco sample into said machine learning-based prediction framework, and said machine-learning-based prediction framework applying said one or more mathematical functions to obtain and output said determined property of said unknown tobacco sample (26).

The present application relates to the technical field of assembly detection, and particularly relates to an assembly detection method for preventing brake pedal and accelerator pedal gap reduction, which comprises the following steps: firstly, multi-dimensional independent detection and qualification of the inner liner and the bushing are carried out, and a unique assembly matching code is given to the qualified parts; secondly, the central server intelligently selects candidate parts from the qualified part queue according to the assembly task, and carries out feature compatibility verification, and dynamically binds the part code and the task code after verification; finally, multi-scan code verification is carried out at the assembly station to ensure that assembly can only be carried out when the part code and the task code are correctly bound. The present application effectively prevents part mismatching and missing, fundamentally guarantees the assembly quality of the pedal assembly, and eliminates the risk of misfooting caused by abnormal gap.

Presented herein is an illumination assembly for providing polychromatic measurement light (230) for an optical measurement device. The illumination assembly includes an aperture component (202) having a first side and an opposing second side and at least one orifice (204), at least one pump light source (206) positioned to provide pump light (220) to the first side of the aperture component (202), and a photoluminescent component (208) positioned on the second side of the aperture component (202) for converting the pump light (220) receptive on the photoluminescent component (208) from the at least one pump light source (206) into polychromatic measurement light (230). At least a portion of the measurement light (230) can pass through the aperture component (202) through the at least one orifice (204) to provide the measurement light (230) to the first side of the aperture component (202). Also presented are related methods and measurement apparatus for using the lighting assembly.

To provide a temperature control device and a color measurement system capable of stably measuring a reflection spectrum of visible light on the surface of an object by stabilizing temperature of the surface of the object to be measured with a simple configuration.SOLUTION: A temperature control device 20 includes: a holder 40 having a mounting section 41 configured so as to be capable of mounting a measurement object 80 having an object surface 81 for measuring color characteristics by a color measuring device 10 and piping 46 for supplying gas with which the object surface 81 is sprayed; and a gas supply device 30 for controlling temperature of gas and supplying it. The mounting section 41 has a sidewall 45 for dividing a space 44 positioned between the object surface 81 and the color measuring device 10 along with the object surface 81 and the color measuring device 10. One end of the piping 46 is positioned in a sidewall 45 such that gas is jetted out toward the object surface 81 in the space 44.SELECTED DRAWING: Figure 3

The present application relates to a skin cosmetic device and a control method thereof. According to an aspect of the present application, there can be provided a skin cosmetic device including a main body to be held by a user, a plurality of light sources capable of irradiating light of different wavelengths from each other, a skin color measuring section capable of measuring a skin color of the user, and a control section capable of controlling at least one of an intensity and an irradiation interval of light of two bands different from each other irradiated by the plurality of light sources according to the skin color measured by the skin color measuring section.

A computer-implemented method suitable for gradient spectacle lens evaluation and a corresponding computer are provided. Measurement data indicating at least one of color or transmission of a plurality of measurement points along at least one line across the spectacle lens is received. The method further comprises calculating scalar values representing a difference of the measurement data of adjacent or overlapping measurement point groups of the plurality of measurement points. The spectacle lens is then evaluated based on the scalar values.

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.

The application provides a radiation total dose detection system and method based on a radiation color-changing film, and the system comprises a luminosity detection system, a chroma detection system and a calculation module; the luminosity detection system is used for detecting the change of light power transmitted by the first radiation color-changing film; the chroma detection system is used for acquiring the image of the second radiation color-changing film; and the calculation module is used for determining the radiation total dose according to the change of light power and / or the image. The application is based on the corresponding relationship between the transmittance of the radiation color-changing film and the received radiation total dose, that is, when the light power loss transmitted by the film increases, the transmittance of the film decreases, and the received radiation total dose increases; when the color of the film image deepens, the transmittance of the film decreases, and the radiation total dose increases. Thus, the real-time monitoring of the radiation dose is carried out from two angles of the change of transmitted light power and the change of image color, respectively, and the online detection of the radiation total dose of the target environment is realized.

A chromaticity attribute evaluation method and apparatus (200), a computer device, a storage medium, and a product. The chromaticity attribute evaluation method comprises: calculating a first chromatic aberration ΔE1 of a chromatic aberration-free group under an illumination light source, the chromatic aberration-free group being a combination of a standard sample and a chromatic aberration-free product (S100); calculating a second chromatic aberration ΔE2 of a group being evaluated under an illumination light source, the group being evaluated being a combination of a standard sample and a product being evaluated (S200); acquiring a false positive probability of determining a chromatic aberration-free group as "having a chromatic aberration" and a true positive probability of determining a group being evaluated as "having a chromatic aberration" (S300); inputting the false positive probability and the true positive probability into a quantization model of the chromatic aberration resolution threshold to obtain a chromatic aberration resolution threshold of the product being evaluated (S400); inputting the false positive probability and the true positive probability into a quantization model of the chromatic aberration determination bias to obtain an estimated determination bias value of the product being evaluated (S500); and on the basis of the chromatic aberration resolution threshold and the estimated determination bias value, acquiring the chromaticity attribute evaluation result of the product being evaluated (S600).

The invention relates to the technical field of on-line testing of light emitting diode production and manufacturing, and provides an LED testing circuit and a testing method thereof. The method comprises the following steps: providing a test power supply for a to-be-tested plate provided with a to-be-tested multicolor light emitting diode, and lightening light emitting diode lamps with different colors on the to-be-tested plate one by one according to a preset color; after a light emitting diode with a color to be detected is turned on every time, three paths of light sensing parameters of current light emitting are collected through a light sensing sensor, the three paths of light sensing parameters are compared, and the color actually emitted by the current light emitting diode is determined according to a preset color judgment logic and the size relation of the three paths of light sensing parameters; comparing the actually judged color with the currently-lightened preset color, if the color is consistent with the currently-lightened preset color, judging that the light-emitting diode works normally, and if the color is not consistent with the currently-lightened preset color, judging that the light-emitting diode works abnormally; and testing of all the to-be-detected color light emitting diodes is completed successively, and a final LED testing result is obtained.

The utility model provides a color proofing device before water-based ink preparation, and relates to the technical field of water-based ink preparation. The color proofing device used before water-based ink preparation comprises a proofing table, a back plate is fixedly arranged on one side of the proofing table, and two sets of supporting frames are fixedly arranged on the top of the surface of the back plate. In consideration of the problems that water-based ink is sprayed on a substrate plate at a time, color comparison is conducted after drying, and the proofing efficiency is low, raw materials are put into ink cylinders correspondingly, an external power source is connected, a servo motor drives a rotating wheel A to rotate, then a transmission belt is driven to rotate, a rotating wheel B rotates along with the rotating wheel A, and meanwhile two sets of stirring rods are driven to rotate; the raw materials of the water-based ink are mixed and stirred, the raw materials of various colors can be proofing at the same time, the ink pump conveys the ink to the ink nozzle and sprays the ink on the substrate plate, and the fan blows hot air of the electric heating plate to the substrate plate, so that the colors are quickly dried and shaped, and the efficiency is improved.

The invention provides a display screen color gamut evaluation method and system, and relates to the technical field of screen display, the display screen color gamut evaluation method comprises the following steps: obtaining M sampling tristimulus values in one-to-one correspondence with M display pictures, the M display pictures being in one-to-one correspondence with M RGB values, at least one RGB value in the M RGB values being not 255, and M being an integer greater than or equal to 3; based on the M sampling tristimulus values and the M standard tristimulus values, M first color appearance data and M second color appearance data are obtained; based on the M pieces of first color appearance data and the M pieces of second color appearance data, M color difference values are obtained, and the M color difference values are used for indicating color differences between the M pieces of first color appearance data and the M pieces of second color appearance data; based on the M color difference values, a histogram is constructed, and the histogram is used for representing color difference distribution between a display screen color gamut and a standard color gamut. The display screen color gamut evaluation accuracy can be improved.

To reduce the time required for colorimetry.SOLUTION: A colorimetric device 2 comprises: a colorimetric unit 20 that has an irradiation unit 21 having an LED that irradiates a color chart image with light and a substrate that is provided with the LED, and a light receiving unit 22 that receives reflected light being the light emitted from the LED and reflected on the color chart image, and measures the color of the color chart image; a moving unit 202 that reciprocates the colorimetric unit 20 along a cross direction; a calibration member 31 that is provided in the cross direction; a temperature sensor 30 that detects the temperature of the LED or the temperature of the substrate; and a colorimetric device control unit 200 that, when determining to perform calibration of the colorimetric unit 20 in colorimetry of the color chart image based on the temperature of the LED or the temperature of the substrate detected by the temperature sensor 30, causes the moving unit 202 to move the colorimetric unit 20 to the calibration member and performs calibration of the colorimetric unit 20.SELECTED DRAWING: Figure 4

The utility model provides an identification circuit and an electronic device, and the identification circuit comprises a light detection circuit which is used for receiving a light intensity signal corresponding to a light source signal and outputting a voltage signal corresponding to the light intensity signal; and one end of the color identification circuit is connected with the other end of the light detection circuit, and the color identification circuit is used for receiving the voltage signal and outputting a color identification result. According to the utility model, the color of the electronic equipment shell can be automatically detected, the color detection efficiency and quality of the electronic equipment shell are improved, and the cost is saved.

A method is provided in different embodiments for ascertaining properties of hair colors in a computer-assisted manner. The method can have the following steps: providing hair color data, said hair color data having respective values for a plurality of color prerequisite parameters and for at least one color result parameter for a plurality of coloring processes, wherein for each coloring process of the plurality of coloring processes, the plurality of color prerequisite parameters has a first concentration of a first dye precursor and a second concentration of a second dye precursor, and for each coloring process of the plurality of coloring processes, the at least one color result parameter has a measured specification for a property of hair colors; and ascertaining a relationship between the plurality of color prerequisite parameters and the at least one color result parameter by means of a predictive analysis based on the hair color data.

The utility model discloses a visual colorimetric box for PVC (Polyvinyl Chloride) sheets, which comprises a box body, a telescopic cylinder is arranged on the outer wall of the upper end of the box body, the telescopic end of the telescopic cylinder extends into the box body and is connected with a mounting plate, the lower end surface of the mounting plate is rotatably connected with a connecting column through a bearing seat, and the lower end surface of the connecting column is fixedly connected with the box body. One end of the connecting column extends out of the bearing seat and is provided with a first transmission gear, a driving motor is arranged on the upper end face of the mounting plate, an output shaft of the driving motor is provided with a second transmission gear, and the first transmission gear is matched and meshed with the second transmission gear; the connecting column is provided with a plurality of evenly-arranged irradiation lamps in the length direction of the connecting column. The mounting plate can be driven by the telescopic cylinder to move up and down to adjust the up-down position of the irradiation lamp, the connecting column and the irradiation lamp can be rotated through the driving motor, and the irradiation angle of the irradiation lamp is adjusted.

This invention discloses a method for confirming color difference in coatings, comprising: circulating the paint to be tested in a paint pump for a first preset time; providing at least two sets of electrophoretic test plates, A and B, wherein set A includes at least three test plates A1, A2, and A3, and set B includes at least three test plates B1, B2, and B3; spraying A1, A2, A3, B1, B2, and B3 respectively; and baking A1, A2, A3, B1, B2, and B3 respectively in a topcoat baking oven. Film thickness tests were performed on A1, A2, and A3 to obtain the first film thickness parameters of the electrophoresis test plates in group A; color difference tests were performed on B1, B2, and B3 to obtain the first color difference variation parameters of the electrophoresis test plates in group B; based on the first film thickness parameters and the first color difference variation parameters, the first correspondence between the color difference and film thickness of the paint to be tested was calculated; based on the first correspondence, the first actual color difference parameters of the paint to be tested under the standard film thickness were calculated; and the first actual color difference parameters were compared with the range of the standard color difference parameters.