39 results about "Color quality" patented technology

The invention relates to the technical field of tobacco prevention and control, in particular to a green tobacco prevention and control method and system based on growth simulation, and the method comprises the steps: obtaining image data and environment parameters of tobacco plants, and carrying out the growth stage recognition processing of the image data, and obtaining the growth stage information; according to the color parameter of each pixel point and the environment illumination information, performing color quality evaluation on each pixel point in the image data to obtain a color quality evaluation index; target pixel points with the color quality evaluation indexes lower than a preset threshold value are recognized between the plant main body area and the plant extension area, and a potential lesion area is constructed according to the recognized target pixel points. According to the method, through color quality evaluation, plant area identification and growth model simulation, a potential lesion area can be identified early, dynamic adjustment is carried out according to growth stage information, and the accuracy and timeliness of disease prediction are enhanced.

The safe and efficient color plating device comprises a control table and an electroplating pool, a cover is hinged to the upper portion of the electroplating pool, and a temperature sensor, a concentration sensor, a cathode clamping part and an anode clamping part are fixedly installed in the electroplating pool. A heating device for heating an electroplating solution in the electroplating tank is fixedly mounted at the bottom of the electroplating tank, a liquid outlet is formed in the bottom of the electroplating tank, a sealing cover is arranged at the liquid outlet, and an exhaust port is formed in the upper part of the side wall of the electroplating tank; the console comprises a shell, a CPU module and a power supply device are arranged in the shell, a display screen, a power switch, a keyboard and a heating switch are embedded in the surface of the shell, the temperature sensor, the concentration sensor, the display screen, the heating device, the keyboard and the power supply device are all connected with the CPU module, and the power supply device is connected with the cathode clamping part, the anode clamping part and the power switch. The heating device is connected with the heating switch. According to the utility model, the plating quality, the plating safety and the plating efficiency are improved.

The utility model discloses an LED light source structure comprising a substrate, the substrate is connected with a light emitting unit and a first light blocking ring surrounding the outer side of the light emitting unit, and the light emitting unit comprises a purple light LED wafer, a blue light LED wafer, an ultraviolet light LED wafer, a red light generating structure and an infrared light generating structure. The surface of the blue light LED wafer is provided with first fluorescent powder or first fluorescent conversion glue capable of converting part of blue light into yellow light, purple light, blue light, yellow light, ultraviolet light, red light and infrared light are integrated, the light source structure can generate wider spectral distribution, and the color quality and the color rendering index of light are improved. The lighting quality can be improved, and the requirements of specific application fields such as plant growth lamps, special lighting in medical equipment and the like can be met. Through the design of the multi-wavelength LED wafer combination, spectral components are controlled more accurately, so that the energy conversion efficiency is optimized, unnecessary energy loss is reduced, higher luminous efficiency is achieved, and meanwhile energy consumption is reduced.

The invention discloses an on-line real-time monitoring and testing system and method for color difference of a colored film. The method comprises the following steps: acquiring a film image by adopting an optical detection module; the reflection calibration module compensates transmissivity fluctuation of the thin film through a reflection plate located below the thin film, and provides a calibration reference by means of a standard material and a calibration plate with the same height; the motion synchronization module realizes synchronization of high-precision camera acquisition and film motion so as to eliminate motion blur, and adjusts the light source intensity of the optical detection module based on the real-time light transmittance feedback of the film; and the data processing module dynamically updates a conversion matrix from RGB to LAB by using the data of the calibration plate so as to compensate system temperature excursion, obtain an E threshold value and generate a color difference distribution thermodynamic diagram. According to the invention, the problem of inaccurate chromatic aberration measurement caused by factors such as film light transmittance fluctuation, system temperature excursion and motion blur in the prior art is solved, real-time and accurate monitoring and rapid analysis of the film chromatic aberration in the production process are realized, and the method is suitable for film color quality control in a high-speed continuous production scene.

This invention discloses a test piece for evaluating the color quality of automotive ambient lighting, comprising: a housing, a light mixing component, and a light homogenizing component, the light mixing component and the light homogenizing component being fixed within the housing; the light mixing component includes a light inlet, a light mixing body, and a light outlet, the area of ​​the light inlet being smaller than the area of ​​the light outlet; the light homogenizing component contains an integrating sphere, and an end face opening is formed on the lower end face of the light homogenizing component, the end face opening communicating with the light outlet of the light mixing component; a side opening is formed on the side of the light homogenizing component, the side opening connecting to a fiber optic socket; the fiber optic socket is connected to external optical analysis equipment via optical fiber. The light mixing component can achieve total internal reflection of most incident light rays. The light emitted by the LED beads, after passing through the total internal reflection tetrahedral structure, is homogenized by the small integrating sphere cavity made of high diffuse reflectivity material, thus retaining most of the energy. Due to the small volume of the integrating sphere cavity, array testing can be performed on densely packed PCBA modules, accelerating the testing cycle, improving testing efficiency, and reducing manufacturing costs.

The invention discloses a laser transfer paper gravure cursor recognition system which comprises a transfer equipment body, a visual detection system and a central control system, and the transfer equipment body is sequentially provided with an unwinding unit, a plurality of transfer color cells and a winding unit in the paper feeding direction of a printing material. The visual detection system comprises at least one first visual detection device and a second visual detection device, and the first visual detection device is installed behind a transfer printing color group serving as a reference and used for capturing an original pattern on a printing material and a reference color pattern transferred by the reference color group in real time. The second visual inspection device is arranged behind the last transfer printing color group and in front of the winding unit and is used for detecting the overprinting precision and color quality of a final transfer printing finished product; the visual detection system is in signal connection with the central control system to form a closed-loop control loop; a storage module is arranged in the central control system and used for storing standard pattern data.

The utility model belongs to the technical field of detection tools, and particularly discloses a color measurement plastic standard plate which comprises a sample plate and a handle. One side of the template along the thickness direction is provided with a highlight surface, and the other side of the template along the thickness direction is provided with a matte texture surface; the handle is connected with the edge of the template; the sample plate is provided with at least two texture areas on the matte texture surface; a circle with the diameter larger than or equal to 22 mm can be contained in the texture area, so that it is ensured that when a user places the target plate on a detection table of a color quality detection instrument, the texture area overlays the detection view of the color quality detection instrument, and it is ensured that the color measurement result of the instrument is more accurate; secondly, the user can grab the sample plate through the handle, so that the texture area of the sample plate cannot be in contact with the hand of the user in the whole detection process, the situation that the texture area is scratched or grease is brought in due to the fact that the user takes the sample plate can be prevented, the color measurement result of the instrument is more accurate, and the detection efficiency is improved. And the color measurement accuracy of the texture surface of the template is improved.

The application provides a point cloud color denoising method and system based on a latent diffusion model and a storage medium, introduces a diffusion model into the field of point cloud color denoising, compresses high-dimensional point cloud data into a low-dimensional space for processing through latent space mapping, and significantly improves the calculation efficiency. The method innovatively generates real distortion noise based on a geometry-based point cloud compression standard, and obtains continuous noise distribution through an interpolation strategy. In the denoising process, the geometric information is combined as a conditional input to guide the denoising, and a dynamic sampling step control mechanism is introduced to adaptively adjust the processing strategy according to the region complexity, so that the processing accuracy of the complex region is ensured, and the calculation efficiency is optimized. Experimental results show that the method can improve the color quality of the coded and decoded distorted point cloud, reduce the attribute artifacts caused by compression reconstruction, and effectively improve the visual effect of the point cloud.

The present application belongs to the technical field of structural color, and particularly relates to a kind of colloidal photonic crystal ink, a kind of colloidal photonic crystal structural color and a preparation method thereof.The preparation method provided by the present application adjusts the surface tension and viscosity of the colloidal photonic crystal ink, so that it is suitable for pattern printing;then, the preparation method of the colloidal photonic crystal structural color provided by the present application uses a substrate treated by hydrophobic treatment (OTS treatment) on one hand, which can reduce the pinning of three-phase line, promote the inward movement of nanoparticles and promote the ordered and close self-assembly;on the other hand, through the method of inverted evaporation self-assembly, the Marangoni flow is enhanced, the inward movement of nanoparticles is promoted, and the ordered and close self-assembly process is promoted, so that the colloidal photonic crystal micro-dome has a higher height-diameter ratio, thereby improving the brightness and saturation of the structural color, and providing a new method for optimizing the color quality of the structural color.

The invention discloses a remote sensing map compression method, apparatus and device, and a storage medium. The method comprises the steps of converting an image from RGB to HSV; acquiring a color feature map of the remote sensing image by using the main color channel attention module, performing down-sampling and nonlinear transformation, and inputting the color feature map into the subsequent main color channel attention module again for iterative processing; extracting prior color information output by each main color channel attention module; converting the color feature map into a binary compressed file through an encoder; converting the binary compressed file into a feature image through a decoder; after an analysis result of the main color channel attention module on the feature image is coded, priori color information is used for guiding feature correction; performing color detail enhancement and up-sampling iteration processing on the corrected feature image; and converting the finally corrected feature image from HSV to RGB to obtain a restored remote sensing image. According to the method, color information loss in the remote sensing map compression process can be remarkably reduced, and the color quality and compression efficiency of the restored image are improved.

The application discloses a kind of based on plane Gauss's color model construction method, system, device and medium, method includes the position parameter of initialization Gauss ball, depth order, shape attribute, color attribute and opacity;According to shape attribute, the shortest axis of Gauss ball is determined, and then flat loss is calculated;According to the shortest axis and observation direction, the local normal of Gauss ball is obtained and then normal alignment loss is calculated;According to opacity, sparsity loss is calculated;Gauss ball is colored and color loss is calculated, according to flat loss, normal alignment loss, sparsity loss and color loss, construct final loss function, and shape attribute, local normal, opacity and color attribute are updated by back propagation algorithm.The application improves normal estimation accuracy by flattening Gauss ball, and then improves the color quality, by combining color model, high-quality rendering of a variety of materials is realized, and can be widely applied in computer vision technical field.

The present application relates to the technical field of light mixing and provides a color light mixing control method and apparatus, and a lamp. The method comprises: acquiring respective source chromaticity coordinates and source brightnesses of a cold white light, a warm white light, and three source color lights; determining a reference white light on the basis of a positional relationship among a target chromaticity coordinate of a target color light, the source chromaticity coordinate of the cold white light, and the source chromaticity coordinate of the warm white light, and the respective source brightnesses of the cold white light and the warm white light; and determining respective actual color power ratios of the cold white light, the warm white light, and the three source color lights on the basis of the target chromaticity coordinate, the reference white light, the source chromaticity coordinates of the three source color lights, a reference brightness, and the respective source brightnesses of the three source color lights. In the present application, because the two white lights have good spectral continuity, a mixed target color light inherits the characteristic of good spectral continuity of the two white lights, so that the color quality of the mixed target color light is better.

The invention belongs to the technical field of intelligent control, and particularly relates to an axle surface electrophoretic coating control method based on artificial intelligence. According to the method, an axle surface image after electrophoresis is collected through machine vision, color features are extracted by using an improved convolutional neural network, and a color uniformity index is generated. In combination with process parameter time sequence data, large-scale sample labeling amplification is realized through semi-supervised clustering and parameter calibration transformation, an incidence relation between process parameters and color uniformity indexes is established, and key process parameters are screened by using mutual information entropy and correlation analysis. And after the uniformity index prediction model is trained, the key parameter control range is taken as a constraint, a genetic algorithm is adopted to optimize the key process parameters, and an optimal parameter combination corresponding to the target color quality is obtained. According to the invention, the intelligent and optimal control of the electrophoretic coating process of the axle surface is realized.

Light-emitting diode (LED) packages and more particularly light mixing arrangements in LED packages are disclosed. LED packages include multiple LED chips arranged within a single recess or cavity and a single corresponding lens. Light mixing arrangements include LED chip layouts, lens structures, and / or cladding layers for lens structures. LED packages are disclosed with reduced full width half maximum values and improved uniformity in far field pattern emissions by reducing lensing effects of multiple LED chips in a single cavity. A figure of merit is described that defines a color quality index metric that characterizes color quality and uniformity of far field emissions in multiple-color and multiple-chip LED packages.

The present application relates to a kind of preparation methods of non-iridescent structural color film with infrared anti-fake features. First, the aqueous solution of monodisperse microspheres is configured, then a small amount of MXene and carbon black material is added, and a mixed colloidal particle suspension is obtained. By using spray, spin coating or roll coating method, three-dimensional amorphous photonic crystal film is formed on the surface of the substrate by rapid evaporation of solvent. The black material absorbs light and scatters multiple times in the amorphous photonic structure, improving the color quality of the amorphous photonic crystal film and showing good non-iridescent structural color display. By using the better absorption in the solar spectrum and the extremely low emissivity in the mid-infrared band of MXene material, as well as the optical characteristic difference with carbon black and other materials, the structural color film realizes the thermal anti-fake property. After micro-heating, the hidden information can be read by an infrared camera.

According to the color detection and analysis method in the high-speed printing process, advanced hardware architecture and algorithm are adopted, delay between links is reduced to the maximum extent, and it is ensured that spectrum detection on the surface of a material in the high-speed production process can be completed within extremely short time. The clustering algorithm is adopted to process mass spectral data, spectral information of different areas of a complex surface is quickly classified and analyzed, so that quick and fine changes of color information of different areas of the material surface in the high-speed production process are accurately captured, the color quality deviation problem is found in time, and the production efficiency is improved. And an accurate basis is provided for timely adjustment of a production process, so that the stability of product color quality is guaranteed.

The present invention relates to a vertically stacked microdisplay panel, which includes a back wafer having an upper surface on which a plurality of complementary metal-oxide-semiconductor (CMOS) electrode pads are arranged, a plurality of light-emitting diode (LED) stacks, each of which includes a plurality of light-emitting units and a plurality of bonding layers that are stacked in a vertical direction and is arranged on one of a plurality of CMOS electrode pads, and a common electrode formed on the plurality of LED stacks, wherein each of the plurality of LED stacks, by forming a short path in at least one of the plurality of light-emitting units, allows a current to flow through the light-emitting unit in which the short path is not formed, and emits only a specific color, and the short path has a preset depth and a preset width.According to the present invention, since a color filter is unnecessary despite the adoption of a vertically stacked tandem structure, the color quality of a microdisplay can be significantly improved, and process complexity and productivity can be significantly improved.

The application discloses an image color correction method, a color correction device and a readable storage medium. The method comprises the following steps: acquiring a to-be-processed image photographed by a current camera device and related parameters of the camera device, wherein the related parameters comprise a current magnification value and a current gain value; constructing a coefficient matrix based on the current magnification value and the current gain value; multiplying the coefficient matrix and a reference color correction matrix to generate a current color correction matrix; and correcting the to-be-processed image based on the current color correction matrix to generate a color correction image. In this way, the application can improve the color quality of an image.

The application discloses a component for testing color quality of a flat light guide atmosphere lamp, which comprises a shell, a lens and a light guide plate arranged in the shell, a containing groove is formed in the lower end surface of the shell and used for placing a PCB surface of a flat atmosphere lamp light source module to be detected, a cavity is formed downward in the upper end surface of the shell and communicates with the containing groove, the light guide plate is arranged above the PCB surface and below the cavity and is used for sending light on the PCB surface into the cavity, and the lens is arranged in the cavity and used for receiving the light gathered by the light guide plate and emitting the light from the top end of the cavity to enter an external optical analysis equipment. The application can achieve good collection effect, has more accurate and closer use mode of color spectrum of a real vehicle atmosphere lamp, reduces exposure time of the optical equipment compared with a collection structure based on a traditional reflection principle, and realizes high-speed rhythm test.

This invention relates to the field of light mixing technology, providing a method, apparatus, and luminaire for controlling colored light mixing. The method includes: acquiring the source chromaticity coordinates and source brightness of white light and three source colored lights, wherein the source chromaticity coordinates of the white light are located within a basic color gamut formed by the three source chromaticity coordinates of the three source colored lights; acquiring the target chromaticity coordinates of a target colored light, wherein the target chromaticity coordinates are located within the basic color gamut; and determining the color power ratio of the white light and the three source colored lights based on the target chromaticity coordinates of the target colored light, as well as the source chromaticity coordinates and source brightness of the white light and the three source colored lights, wherein each color power ratio is used to determine the target brightness of the light source output of the corresponding color, so as to mix the target colored light. In this invention, because white light has good spectral continuity, the target colored light obtained by mixing white light continues the characteristic of good spectral continuity of white light, thus resulting in better color quality of the mixed target colored light.

A light emitting device includes: a light emitting diode (LED) for generating blue light; the green fluorescent powder is used for generating green light; the manganese activated fluoride narrow-band red fluorescent powder is used for generating red light; wherein the ratio of the maximum intensity of the red region of the spectrum to the minimum intensity of the yellow to orange region of the spectrum is about 5.0 to 15.0.

The invention relates to the technical field of lithographic printing, discloses a lithographic printing color quality dynamic regulation and control system based on machine vision, and solves the problem that dynamic regulation and control cannot be realized due to the fact that the existing lithographic printing color quality cannot be monitored. The device comprises a regulation controller, a displayer, a printing machine base, a plurality of guide rails, a printing mechanism and a monitoring mechanism, the guide rails are fixedly connected to the front face and the back face of the printing machine base, the printing mechanism is slidably connected to the top ends of the guide rails, the monitoring mechanism is fixedly connected to one side of the printing mechanism, and the regulation controller and the displayer are located at one end of the printing machine base. The monitoring mechanism is composed of a first servo motor, a lead screw, a sliding block, a light shield, a fixed-point visual detection assembly, a fixed-point lighting assembly and an adjustable lighting assembly. By means of the system, the color can be monitored and analyzed in the printing process, and therefore the color quality can be dynamically regulated and controlled conveniently.

This invention discloses a multi-channel spectral image prediction method, system, and storage medium based on HMSSA-BP neural network. The method includes: First, constructing a BP neural network prediction model (BPNN) from the theoretical dot area ratios of C, M, Y, and K to multi-channel spectral maps using multi-source multispectral imaging technology. Second, optimizing the BPNN using the Hybrid Multi-Strategy Sparrow Search (HMSSA) algorithm, which introduces Tent mapping, a staged control step size strategy, and a chaotic cosine variation factor based on SSA. Third, introducing an adjustment factor Q and proposing a multi-channel spectral map fusion algorithm to obtain the predicted post-printing color image. This invention, based on multi-source multispectral imaging technology, constructs a high-precision multi-channel spectral prediction model to predict the post-printing image before actual printing, ensuring the color quality and consistency of the final printed product.

The embodiment of the invention provides a chromaticity adjustment method and device of a projector, electronic equipment and a storage medium, and relates to the technical field of projection. The chromaticity adjustment method of the projector comprises the following steps: under the condition that the projector projects a projection picture, acquiring a chromaticity coordinate value and / or a brightness value of the projection picture through a detector; and when the obtained color coordinate value and / or the brightness value of the projection picture does not meet the preset condition, controlling the adjustment of the current of the three-color light source or the voltage of the projection chip, and obtaining the color coordinate value and / or the brightness value of the projection picture again through the detector until the obtained color coordinate value and / or the brightness value of the projection picture meet the preset condition. The color coordinate value and / or the brightness value of the projection picture can better represent the color of the projection picture projected by the projector, and the color quality of the projection picture projected by the projector is improved.

This invention relates to the field of light mixing technology, providing a method, apparatus, and luminaire for controlling colored light mixing. The method includes: acquiring the source chromaticity coordinates and source luminance of cool white light, warm white light, and three source colored lights; determining a reference white light based on the positional relationship between the target chromaticity coordinates of the target colored light, the source chromaticity coordinates of the cool white light and warm white light, and the source luminances of the cool white light and warm white light; and determining the actual color power ratio of the cool white light, warm white light, and the three source colored lights based on the target chromaticity coordinates, the reference white light, the source chromaticity coordinates of the three source colored lights, the reference luminance, and the source luminances of the three source colored lights. In this invention, because the two white lights have good spectral continuity, the mixed target colored light continues the characteristic of good spectral continuity between the two white lights, resulting in better color quality of the mixed target colored light.

The application discloses a kind of semiconductor light emitting device color self-fitting method.The method is according to the principle of semiconductor white light mixing, through color quality diagram, the excitation light characteristics of fluorescent material are drawn, and the ratio of fluorescent material is determined in combination with display index.The method has simple structure, high fitting accuracy, can be directly connected or self-built database, pre-test input parameters, through mathematical fuzzy calculation technology, write in CIE color matching logical relationship, through the linear contrast of coordinate and the mode of experience data combination, automatically calculate and give the ratio meeting the requirements, realize the automatic ratio of fluorescent material.The method is more compatible with the increase of use times, effectively overcomes the problem that the spectrum and color of the matched fluorescent material cannot be completely fitted and synthesized according to the emission spectrum.

The present application relates to a kind of point cloud quality evaluation methods based on relative entropy, belong to multimedia information processing field, reference point cloud is down-sampled, and the geometric architecture of point cloud is obtained;Sub-point cloud is constructed in reference point cloud and distorted point cloud with geometric architecture as center, its quick point feature histogram and its relative entropy are calculated, and are taken as the geometric quality result of sub-point cloud;The color attribute of sub-point cloud is converted to LMN color space, the zeroth moment of color space, the first moment, the second moment are calculated, and the color quality result of sub-point cloud is obtained;The geometric quality result and color quality result of sub-point cloud are aggregated with weight, and the final point cloud quality evaluation model based on relative entropy is obtained.

A light emitting device comprising: an LED for generating blue light; a green phosphor for generating green light; and a manganese activated fluoride narrowband phosphor for generating red light; wherein a ratio of a maximum intensity in the red region of the spectrum to a minimum intensity in the yellow to orange region of the spectrum is from about 5.0 to about 15.0.

The application discloses a light source color fidelity evaluation method, device and equipment and a storage medium. The method comprises the following steps: obtaining a three-stimulus value set corresponding to each spectral band subset and a reference three-stimulus value set by testing the spectral power distribution and the reference spectral power distribution of a light source in a preset wavelength range, a plurality of spectral band subsets and a plurality of test color samples in each spectral band subset; obtaining a color quality coordinate set corresponding to each spectral band subset and a reference color quality coordinate set based on the color quality coordinates of the test color samples under the test light source and the reference color quality coordinates under the reference light source; and obtaining a color fidelity index of the test light source according to the distance between the color quality coordinates and the reference color quality coordinates of the test color samples in each spectral band subset. The color restoration ability in different bands is accurately evaluated, so that the color development authenticity and the overall color fidelity level of the test light source on each main color gamut can be quantitatively reflected.

The present invention relates to the technical field of LEDs, and in particular to a sunset glow spectrum-based LED and a preparation method therefor. The sunset glow spectrum-based LED comprises a plurality of LED chips, a frame, silicone and a phosphor encapsulant. A reflector cup and positive and negative electrodes are arranged on the frame; the LED chips are all arranged in the reflector cup, and are connected to the positive and negative electrodes by means of gold wire bonding; the phosphor encapsulant covers the LED chips; the LED chips include a first LED chip, a second LED chip and a third LED chip; and the phosphor encapsulant is formed by preparing a 1600K phosphor encapsulant solution and is formed by mixing an adhesive with green phosphor, red phosphor and infrared phosphor. The sunset glow spectrum-based LED of the present invention has color quality meeting the requirement that an S / P ratio and an M / P ratio are lower than sunlight having the same color temperature, color temperature meeting specified standard chromaticity coordinates, chromaticity coordinates meeting 3-standard deviation of color matching, spectral similarity index (SSI) relative to the 1600K solar spectrum being greater than 93%, and blue light hazard efficiency KB,V equal to 0.00004, and conforms to RG0 blue light hazard exemption standard.