32 results about "Color test" patented technology

A color checker device is disclosed. The color checker device includes a substrate configured to be inserted into a model eye and to conform to a surface curvature of the model eye when inserted therein. A color test target is located on the substrate. The color test target comprises a plurality of color sections configured for generating a color characterization profile of a fundus imaging camera configured to capture a color image of a human retina. A method of generating a color characterization profile using the color checker device and a fundus imaging system having the color characterization profile stored thereon are also disclosed.

The invention discloses an outdoor dot matrix display screen picture flaw detection method, device and system based on texture features and a server. According to the method, at least two pure color test pictures are obtained, and defect full-coverage detection is realized by utilizing sensitivity differences of different color channels; besides, multi-scale feature extraction is carried out based on a Gabor filter, so that scale features such as single-point dead pixels, regional dark spots and module-level distortion can be captured, and multiple types of flaws such as brightness deviation and large-area uneven brightness can be covered. According to the method, the detection rate of traditional leak detection scenes such as small dead pixels and color deviation is increased to 95% or above, the environment robustness is high, the false detection rate in the complex illumination and vibration environment is low, and a high-reliability automatic defect detection solution is provided for the field of outdoor advertisements and public display.

The invention provides a point light source light field distribution testing device and method, and the device comprises a daylighting part, a diffusion sheet and a photographing device, a point light source part is conveyed to a testing station through a conveying device, the testing station is located below the daylighting part, the daylighting part is close to the point light source part, the diffusion sheet is arranged at the top of the daylighting part, and the photographing device is located below the diffusion sheet. The light collecting piece is arranged above the spot light source, the shooting device is arranged above the diffusion sheet, the light collecting piece collects light rays emitted by the spot light source at different angles, the light rays are scattered at the diffusion sheet, and the shooting device collects images on the diffusion sheet. According to the scheme, color testing of the light source and light field distribution are combined together, collection of all light emitting information of a point light source material can be completed through one-time testing, and the requirement for automatic testing of the LED light field is met.

The invention discloses a ray tracing method, a graphics processor, an electronic device and a storage medium, and the method comprises the steps: obtaining batch primitive information meeting a coloring test requirement in a current node in a bounding volume hierarchical structure by a ray tracer in a process of carrying out a traversal intersection test on a ray and the bounding volume hierarchical structure; transmitting the batch primitive information and the current light ray information corresponding to the current node to a shader, so that the shader performs a coloring intersection test on the batch primitive and the current light ray; and receiving an intersection test result transmitted by the shader, and executing ray tracing operation according to the intersection test result. According to the technical scheme, the waiting time delay of information transmission between the light tracer and the shader can be reduced, and the execution efficiency of a graphic rendering task and the utilization rate of hardware resources of a graphic processor are improved.

The utility model relates to a five-color test fixture, which belongs to the technical field of equipment test, and comprises a test fixture body and a plurality of test positions, each test position is provided with an indicator lamp capable of being independently controlled, and the outer side of the test fixture body is provided with a detection heat dissipation mechanism. The top of the test fixture body is fixedly provided with a plurality of test positions. According to the five-color test fixture, whether a circuit of a lamp bead is normal or not can be judged under the action of the metal pins and the indicator lamps, heat can be quickly conducted by using the heat conducting seat and the vapor chamber, and the temperature on the vapor chamber and the heat conducting seat can be reduced under air outlet of the cooling fan, so that the test fixture body is cooled; the service life of the device is prolonged, a limiting pin can be driven to stretch out and draw back under the action of a pull ring, a movable rod, a movable plate and a reset spring, the heat conduction base can be conveniently fixed in an inserted mode or detached through the limiting pin, maintenance and replacement are convenient, and flexibility is improved.

The present invention discloses a method and system for detecting the quality of in-vehicle display screens based on image color gamut analysis, which relates to the technical field of display screen detection. The method includes obtaining in-vehicle display screen information, based on the in-vehicle display screen information, obtaining the standard color gamut information of the display screen, and based on the standard color gamut information of the display screen, through quality detection and analysis of the display screen, obtaining the regional range threshold. By dividing the in-vehicle display screen, the present invention ensures the accuracy and reliability of the quality detection of the in-vehicle display screen. Through the color gamut coverage index of the display screen, the color gamut coverage condition of the display screen is accurately evaluated, ensuring the stability of production quality. Through the color test data of the display screen, it is judged whether the image display of the display screen meets the production standard, ensuring that the in-vehicle display screen provides a consistent and true color experience under different lighting and angles. It can effectively identify the color deviation of the display screen, ensure that the visual effect reaches the design standard, and improve driving safety and user experience.

A control device selects one of a plurality of chromatic colors as a target chromatic color according to a consumption status of developing agents of the plurality of chromatic colors. The control device causes an image forming portion to execute a process of forming, on a surface of a transfer medium, a plurality of chromatic color test images of the plurality of chromatic colors, and a superimposed test image in which a black test image is superimposed on a background image of the target chromatic color. The control device acquires a test detection signal of an amount of diffuse reflection light in each of areas of the plurality of chromatic color test images and the superimposed test image on the surface of the transfer medium. The control device adjusts timing of image formation of the plurality of colors by the image forming portion based on the test detection signal.

This application relates to apparatus and methods for testing one or more computing devices. In one example, a testing system includes a testing frame with at least one testing cabinet for housing a computing device under test. The testing cabinet can also include testing equipment such as a camera, a microphone, a speaker, a color test sheet, and an ambient light sensor. Further, the testing frame includes a control cabinet for housing a testing computing device, where the testing computing device is communicatively coupled, through one or more hubs, to each computing device under test. The testing frame may also include a bracket that secures a monitor and a keyboard, where the monitor and keyboard are communicatively coupled to the testing computing device. The testing computing device can control the testing equipment to test various functions of the computing device under test, an may generate status based on the tests.

The invention discloses an ink color testing method, device and equipment and a storage medium, and relates to the technical field of ink testing for ink-jet printing. The method comprises the following steps: determining test waiting time; controlling the ink-jet printing equipment to jet ink to be tested onto a printing medium to obtain a first test image; and after the test waiting time, controlling a color acquisition device to obtain a color value of the first test image so as to determine color characteristics of the ink to be tested. According to the method provided by the invention, the color of the first test image is not collected immediately after the first test image is printed, but is collected after the test waiting time ensures that the color of the ink on the printing medium is stable, so that the test result is closer to the actual performance, and the accuracy of the ink color test result is improved.

The present invention discloses a color test paper for aflatoxin detection and a preparation method thereof. 71‑x Y x Nb6B 23 Nanocrystalline / amorphous composite magnetic iron-based nanoparticles are mixed with colloidal gold particles, labeled with corresponding antibodies, and then sprayed on a nitrocellulose membrane. Finally, a polyvinyl chloride base plate, a sample pad, a nitrocellulose membrane, and absorbent paper are assembled to form a color test paper. 71‑x Y x Nb6B 23 The mixed particles of nanocrystalline / amorphous composite magnetic iron-based nanoparticles and colloidal gold have a specific adsorption effect on aflatoxin, forming color blocks under the action of particle agglomeration, thereby realizing the visual detection of aflatoxin.

The embodiments of the present application relate to the technical field of aerosol generation apparatuses. Disclosed are a color testing calibration method and an aerosol generation apparatus. The method comprises: acquiring a no-load signal of an aerosol generation apparatus, then controlling a color testing apparatus to perform a color test, so as to obtain a new background color value; according to the new background color value and the current background color value, calibrating the current color threshold interval, so as to obtain a new color threshold interval; and storing the new color threshold interval and the new background color value. That is, along with the use of an aerosol generation apparatus, the current background color value and the current color threshold interval are re-calibrated, a new color threshold interval and a new background color value, which are obtained by means of calibration, are used as reference values for color determination, such that the reference values are adapted to a smudge and aging of a color testing apparatus. By means of the present application, fine errors such as small dirt and brightness attenuation can be corrected in a timely manner, color testing is more accurate, and the anti-dirt effect is effectively achieved.

A control device selects one of a plurality of chromatic colors as a target chromatic color according to a consumption status of developing agents of the plurality of chromatic colors. The control device causes an image forming portion to execute a process of forming, on a surface of a transfer medium, a plurality of chromatic color test images of the plurality of chromatic colors, and a superimposed test image in which a black test image is superimposed on a background image of the target chromatic color. The control device acquires a test detection signal of an amount of diffuse reflection light in each of areas of the plurality of chromatic color test images and the superimposed test image on the surface of the transfer medium. The control device adjusts timing of image formation of the plurality of colors by the image forming portion based on the test detection signal.

The invention discloses a nanocellulose color test strip for simultaneously detecting porcine epidemic diarrhea virus (PEDV), porcine delta coronavirus (PDCoV) and porcine acute diarrhea syndrome coronavirus (SADS-CoV). The red nanocellulose ball labeled combination pad is coated with a red nanocellulose ball labeled anti-PEDVN protein monoclonal antibody; the green nanocellulose ball labeled combination pad is coated with an anti-PDCoVN protein monoclonal antibody labeled by green nanocellulose balls; the blue nanocellulose ball labeled combination pad is coated with an anti-SADS-CoVN protein monoclonal antibody labeled by blue nanocellulose balls; the three detection lines are respectively coated with monoclonal antibodies of N proteins of the three viruses, and the quality control line is coated with rabbit anti-mouse IgG. The test strip distinguishes target viruses through colors, is high in sensitivity and simple and convenient to operate, and can complete triple detection within 10 minutes.

The invention relates to a packaging unit detecting and positioning method and system based on image analysis, and relates to the technical field of image detection.The method comprises the steps that multiple sets of illumination parameters for testing are determined; acquiring color test images of the plurality of food packages for testing under the plurality of groups of illumination parameters for testing, and determining an optimal illumination parameter; a plurality of color test images of the to-be-punched food packages under the optimal illumination parameters are obtained, and the positions of the to-be-punched food packages in any two color test images are different; determining a punching positioning matching point group of the to-be-punched food package based on the plurality of color test images of the to-be-punched food package under the optimal illumination parameters; acquiring a color real-time image of the food package to be punched under the optimal illumination parameter; and the real-time punching coordinate is determined based on the punching positioning matching point group and the color real-time image of the to-be-punched food package, and the method has the advantage of improving the punching positioning efficiency and accuracy of the food package.

The application belongs to the field of electrochemistry, and relates to tumor protein P53 gene detection, in particular to a label-free double-color test strip, a kit and a preparation method thereof for tumor protein P53 gene detection. The application belongs to a novel LFA method, which combines DNA hybridization chain reaction with the electrostatic adsorption principle of test line / control line, selects common and cost-effective bovine serum albumin as the test line, utilizes the difference in the adsorption capacity of BSA to double-stranded DNA and nano-gold, and the different flow rates of different molecules on the NC membrane to complete the detection of p53 at different concentrations. The test line is constructed by positively charged PDDA to ensure the effectiveness of the LFA. Meanwhile, the detection principle of a liquid colorimetric sensor is combined, and the double-color development greatly reduces the detection limit of the test strip. The sensor is label-free throughout, and has high analytical performance in terms of sensitivity, selectivity and practicability. The p53 gene is detected on the lateral flow test strip for the first time.

The utility model provides a hard contact lens fitting device which is used for checking whether a hard contact lens is matched or not through fluorescein and comprises colored test paper and a holding handle, and the holding handle is connected with the colored test paper; the coloring test paper is cylindrical, and one end, far away from the holding handle, of the coloring test paper extends along the axial direction of the holding handle to form a coloring part with a curved surface; the shape of the holding handle comprises a rod shape, the holding handle is connected with one end of the colored test paper, and a disc-shaped stopping part is formed by extending along the radial direction of the holding handle and is used for stopping fluorescein adsorbed by the colored test paper. The utility model provides a hard contact lens fitting device, which is helpful for improving the uniformity of fluorescein distribution, improving the accuracy of fitting results and reducing the possibility of pollution caused by fluorescein leakage.

This invention relates to user-specific color contrast enhancement. The invention proposes an apparatus and corresponding method for estimating a user's categorical color matching function (CMF) type and / or adjusting the device's color imaging workflow. Estimating the user's categorical CMF type includes: displaying a binary color test set on a screen; calculating a score for each categorical CMF type in a predetermined set of categorical CMF types based on received input information; and selecting a categorical CMF type for the user corresponding to the maximum or minimum score. Furthermore, this invention proposes an apparatus and corresponding method for creating a binary color test set.

The utility model provides a point light source light field distribution testing device, which comprises a daylighting piece, a diffusion sheet and a shooting device, a point light source piece is conveyed to a testing station by a conveying device, the testing station is arranged below the daylighting piece, the daylighting piece is arranged close to the point light source piece, the diffusion sheet is arranged at the top of the daylighting piece, and the shooting device is arranged on the testing station. The light collecting piece is arranged above the spot light source, the shooting device is arranged above the diffusion sheet, the light collecting piece collects light rays emitted by the spot light source at different angles, the light rays are scattered at the diffusion sheet, and the shooting device collects images on the diffusion sheet. According to the scheme, color testing of the light source and light field distribution are combined together, collection of all light emitting information of a point light source material can be completed through one-time testing, and the requirement for automatic testing of the LED light field is met.

The application discloses a printed matter color automatic detection device and detection method, which comprises a chassis, a transmission assembly arranged above the chassis to realize transmission of the printed matter, and a detection cabinet mounted on the top of the chassis, and a color detection mechanism arranged in the detection cabinet to realize multiple detection operations of the color of the printed matter. The application relates to the color automatic detection technical field. The printed matter color automatic detection device and detection method are provided with the color detection mechanism, a switching unit is used to realize switching operations of different light source lamps, color tests under different environments in the detection process are realized, personnel is not needed to replace the light source lamps, the clamping unit is used to realize clamping opening of the light source lamps, and the clamping opening realizes light source generation and stable operations, light source switching and positioning operations, so that the overall detection operation is more convenient, the efficiency is higher, and integrated automatic color detection operations are realized.

An abrasive article including a backing; a plurality of shaped abrasive particles overlying the backing; where the abrasive article further has: 1) a Swarf Mode Gray Value of less than 25 for cumulative material removed of at least 500 g according to the Inconel Grinding Swarf Color Test; 2) a Maximum Swarf Mode Gray Value of less than 25 for a cumulative material removal of not greater than 700 g according to the Inconel Grinding Swarf Color Test; or 3) a combination of 1) and 2).

The invention discloses a color phase detection method of a pigment, which comprises the following steps: preparing a standard rich color test block and a to-be-detected rich color test block as well as a standard light color test block and a to-be-detected light color test block, and making a colorimetric color card; respectively comparing the colors of the standard rich-color test block and the to-be-detected rich-color test block in the colorimetric color card and the colors of the standard light-color test block and the to-be-detected light-color test block in the colorimetric color card by adopting a visual observation mode; respectively detecting the standard rich-color test block, the to-be-detected rich-color test block, the standard light-color test block and the to-be-detected light-color test block by adopting a colorimeter to obtain a chromatic aberration parameter E1 of the to-be-detected rich-color test block relative to the standard rich-color test block and a chromatic aberration parameter E2 of the to-be-detected light-color test block relative to the standard light-color test block; if the visual observation result shows that the colors of the corresponding test pieces are similar, E1 < = 0.8 and E2 < = 0.8 are met simultaneously, the to-be-detected pigment is judged to be qualified. According to the hue detection method, the hue of the pigment can be accurately and rapidly detected, and the stability of the hue of the pigment is ensured.

This utility model provides a color testing device for automotive ambient light guides, comprising: a base plate, with wheels at the bottom of the base plate, a testing device housing at the top of the base plate, a storage cabinet at the bottom of the testing device housing, a workbench in the middle of the testing device housing, a support frame on the workbench, clamping parts on both sides of the support frame, and a light-shielding part and a testing part above the workbench. The color testing device for automotive ambient light guides provided by this utility model features a central support frame that enhances the stability of the main support structure. The arc-shaped pads of the contact pads and clamping parts, combined with springs, provide flexible clamping to avoid damage to the light guide strip. The light-shielding part uses a staggered adjustment through light-transmitting holes for precise light control. Combined with the testing part, a three-dimensional positioning system formed by a first sliding rail, a crossbar, and a lifting push rod expands the detection range of the detection probe, testing the detection effect at various locations and improving efficiency.

Method for reproducing digital color images on a monitor (4) in false color representation, - wherein the color images are captured using an image sensor (2) of an endoscopic image acquisition system (1) in a color image acquisition mode (15), - wherein an image processing unit (3) of the image acquisition system (1), which is arranged in a camera control unit (9) mediating between an endoscope (10) of the image acquisition system (1) and the monitor (4), generates respective image signals (8) from the recorded color images, which are supplied to an image signal input (5) of the monitor (4) in order to reproduce the color images live on the monitor (4) in false color representation, - and wherein the image processing unit (3) calculates a respective false color representation of the color images, based on image data recorded with the image sensor (2) and on the basis of at least one stored false color which is assigned to a specific image area, characterized in that - that before the actual reproduction of the color images on the monitor (4) a digital color test image (6) is displayed on the monitor (4) which has at least one stored false color that is used for the false color display, - that a digital image (7) of the color test image (6) displayed on the monitor (4) is captured by means of the image sensor (2) and compared with the original color test image (6), - that, depending on a determined deviation between the image (7) and the original digital color test image (6), at least one color compensation parameter (20) is determined and - that subsequently, in the color image capture mode (15), at least one color compensation parameter (20) is used to adjust the image signals (8) generated in the color image capture mode (15) before these image signals (8) are transmitted to the monitor (4), - so that the image signals (8) are color-adapted to the monitor (4) used, and thus a color-accurate reproduction of the at least one false color stored on the monitor (4) can be achieved.

The present invention provides a color testing device, comprising a frame, on which an electrical cabinet, a motion module, a fixture module, a color correction module, and a colorimeter module are sequentially arranged. The motion module is mounted on the upper end surface of the electrical cabinet, the fixture module and the color correction module are mounted on the motion module, and the colorimeter module is located above the fixture module. A product is placed on the fixture module and driven by the motion module to pass under the colorimeter module, where color correction is first performed and finally the color of the product is tested. The entire process is automated, thereby reducing errors generated during manual testing and realizing human-machine integration. The device is simple and convenient to operate, has high production efficiency, and accurate testing.

Patterned fibrous substrates having a plurality of individual fibers, a first region, and a second region are provided. The patterned fibrous substrates have a plurality of individual fibers of the first region having a first diameter and a plurality of individual fibers of the second region have a second diameter, wherein the first diameter is less than the second diameter. The individual fibers of the first region and the individual fibers of the second region are substantially free of bonds, other than primary bonds. The first region has a first C.I.E. L* score, and the second region has a second C.I.E. L* score, according to the Color Test Method. The first C.I.E. L* score is different than the second C.I.E. L* score.

The present application relates to a kind of equipment signal indicator light color test system, comprising: light guide fiber, the probe end of the light guide fiber is aligned with the signal indicator light of the equipment to be detected, and the other end of the light guide fiber is connected to color sensor;Color sensor is used to convert the color light signal transmitted by light guide fiber into spectral digital signal;Microcontroller is used to control the on-off of the signal indicator light of the equipment to be detected, and the spectral digital signal obtained from color sensor is parsed into color coding information;PC end is connected with the microcontroller, used to issue signal indicator light on-off control instruction to the microcontroller, and the color coding information parsed by the microcontroller and the pre-input color information coding are compared and the comparison result is output;Power supply is used to power the system.Compared with the prior art, the present application has the advantages of strong environmental applicability, high test accuracy, simple structure and high economic practicality.

The invention discloses a printed matter color automatic detection device and detection method.The printed matter color automatic detection device comprises a bottom frame, a transmission assembly is arranged above the bottom frame to achieve printed matter transmission, a detection cabinet is installed at the top of the bottom frame, and a color detection mechanism is arranged in the detection cabinet to achieve multiple times of detection operation on the colors of printed matter; the invention relates to the technical field of automatic color detection. According to the printed matter color automatic detection device and detection method, the color detection mechanism is arranged, switching operation of different light source lamps is achieved through the switching unit, so that color testing in different environments is simulated in the detection process, meanwhile, personnel do not need to replace the light source lamps, clamping opening of the light source lamps is achieved through the clamping unit, and the detection efficiency is improved. The light source generation and stabilization operation is achieved through clamping, the light source switching and positioning operation is achieved through clamping opening, the overall detection operation is more convenient and faster, the efficiency is higher, and the integrated automatic color detection operation is carried out.

To enable automatic determination of a model of a white light source or an image sensor unit so that parameters relating to processing of read image data can be correctly set.SOLUTION: A processor 51 acquires test image data being read image data obtained by an image reading device 10 for a test image medium including a test region of a specific color (S102). The processor 51 derives a blue representative value being a representative value of blue data, and a determination color representative value being a representative value of red or green data, for a plurality of pieces of pixel data in the test region of the test image data (S103). The processor 51 derives a determination value by correcting the determination color representative value according to a ratio of a blue reference value to the blue representative value (S104). The processor 51 determines a model of the white light source by comparing the determination value with a determination reference value (S105).SELECTED DRAWING: Figure 4

The invention discloses a color evaluation method for large-scale set book printing. The method comprises the following steps: designing a color test sample; sending the designed color test specimen page to a plurality of test printing factories for printing, and collecting a printing draft of the color test specimen page; performing multi-dimensional evaluation on each collected printing draft according to a pre-constructed color evaluation strategy to obtain a total scoring result of each printing draft; the pre-constructed color evaluation strategy is used for evaluating the color separation color and gray balance uniformity of the character color separation standard test pattern area, evaluating the cover color of the cover simulation area of the book to be printed, and evaluating the spot color tone and the light dot of the color gradient area; evaluating the filling condition of black dots in the fine line in the dot filling detection area in the fine line, and evaluating the fine line registration condition in the fine line registration detection area to obtain a scoring result of a corresponding dimension; and screening the plurality of test printing factories based on the total scoring result of each printing draft to obtain qualified printing factories.

An abrasive article including a backing; a plurality of shaped abrasive particles overlying the backing; where the abrasive article further has: 1) a Swarf Mode Gray Value of less than 25 for cumulative material removed of at least 500 g according to the Inconel Grinding Swarf Color Test; 2) a Maximum Swarf Mode Gray Value of less than 25 for a cumulative material removal of not greater than 700 g according to the Inconel Grinding Swarf Color Test; or 3) a combination of 1) and 2).