373 results about "High color" patented technology

The invention provides a three-dimensional map construction method and device, computer equipment and a storage medium, and belongs to the field of image processing.The method comprises the steps that image information is obtained in real time; estimating pose information of the target camera; performing sub-mapping processing on the image information to obtain multiple pieces of sub-map information; performing dense mapping on each piece of sub-map information by adopting Gaussian sputtering, generating Gaussian point cloud corresponding to each piece of sub-map information, and generating a region mask corresponding to each piece of sub-map information in combination with the image information; determining a high color gradient region and a sparse region according to the region mask; constructing a multi-layer Gaussian pyramid of the key frame based on the high color gradient region and the sparse region; and reducing the number of layers of the pyramid through iterative training, completing rendering of the sub-map information, and obtaining a three-dimensional map corresponding to the image information. Therefore, computing resources are saved, the data processing efficiency and the map rendering speed are improved, and the SLAM performance is improved.

The invention discloses a melamine paper surface defect detection system based on optical detection, and relates to the technical field of industrial optical detection, and the melamine paper surface defect detection system comprises a polarized light signal generation module which employs a high color rendering index white light source to irradiate the surface of melamine paper, obtains a surface reflection light beam array carrying different polarization states, and modulates the surface reflection light beam array into eight groups of independent polarized light signals; the multispectral imaging and registering module inputs eight groups of independent polarized light signals into a free-form surface prism group and performs light splitting to generate a diffuse reflection texture image, a mirror reflection image and a near-infrared perspective image, and constructs a three-channel space registering image matrix; and the light path calibration module is used for extracting defect coordinate data and confidence score based on the pixel-level defect thermodynamic image, and performing light path compensation by adopting a real-time feedback regulation mechanism to obtain a dynamically calibrated stable optical imaging signal.

A compound of Chemical Formula 1 and an organic light emitting device including the same are provided. The compound is used as a material of an organic material layer of the organic light emitting device, and provides high color purity, high efficiency and enhanced lifetime properties.

The invention discloses a compound containing a urea structure as well as a preparation method and application of the compound in a color developing agent, and relates to the technical field of color developing agents. The compound containing the urea structure is a # imgabs0 # structure as shown in a formula 1. The compound containing the urea structure is synthesized through multiple steps of Suzuki reaction, bromination reaction and substitution reaction. The compound is used as an electron donor to be applied to a thermosensitive color development system and forms a color development composition with a phenolic compound and an acidic material, and the activation temperature is as low as 60-120 DEG C. The ureido structure stabilizes a reaction intermediate through a hydrogen bond network, enhances the electron transfer efficiency, and significantly improves the color developing sensitivity; the aryl / heteroaryl substituent optimizes the color contrast through the conjugation effect, and meanwhile, the synergistic effect of the hot-melt filler ensures the stability of the system. Compared with a traditional color developing agent, the color developing agent has the advantages of low-temperature activation, high color developing intensity and excellent weather resistance, is suitable for the fields of thermal printing, anti-counterfeiting materials and the like, and overcomes the defects of high reaction temperature and insufficient stability in the prior art.

The invention relates to a system and a method for making a colored low-light image. The system for making the color low-light-level image comprises a high-sensitivity CMOS imaging module which is used for enhancing the photon collection capability and reducing the noise level to complete imaging; the image enhancement processing module adopts a histogram equalization algorithm and comprises the steps of calculating a gray histogram of the original image, calculating a cumulative distribution function according to the gray histogram and performing gray mapping to obtain an enhanced gray value; the image noise reduction processing module is used for carrying out noise reduction on the image after enhancement processing, and filtering is carried out by adopting a night image noise reduction technology, a bilateral filtering method including spatial domain noise reduction and a band-pass filter including frequency domain noise reduction; and the colorful low-light-level image generation module obtains a colorful low-light-level night vision image by adopting an interpolation algorithm and makes a colorful low-light-level image. According to the system and the method for manufacturing the colored low-light-level image, special equipment is not depended on, the imaging quality of the colored low-light-level image can be improved, and the colored low-light-level image can be manufactured.

The invention discloses a high-color-purity near ultraviolet heat exciton compound with circular polarization property and application thereof in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The electroluminescent material disclosed by the invention is a high-color-purity near ultraviolet heat exciton compound with circular polarization property, and two pairs of near ultraviolet enantiomers are successfully designed and synthesized by combining a chiral group binaphthol, a weak donor dibenzothiophene, dibenzofuran and an acceptor cyanophenyl; the compounds show obvious circular polarization luminescence property and high fluorescence quantum yield. The electroluminescent devices prepared based on the enantiomers all show near ultraviolet emission, CIE coordinates are respectively (0.168, 0.040) and (0.166, 0.040), and the external quantum efficiencies are respectively 4.3% and 3.4%. According to the near ultraviolet heat exciton material, a new visual angle is provided for developing the near ultraviolet heat exciton material with circular polarization luminescence and high color purity at the same time, and 3D and wide color gamut display can be directly achieved in the future.

The invention discloses an ink-jet printing defect identification method and system, and relates to the technical field of image processing, and the method comprises the steps: collecting a to-be-detected printing image, and carrying out the template matching with a standard image of a corresponding printing template; calculating a color difference value between each pair of matched pixel points, obtaining a color difference matrix, dividing a color difference range, and obtaining a high color difference region and a low color difference region; based on the high-color-difference area, identifying an obvious ink dot defect area; calculating the defect probability of each pixel point based on the low-color-difference region; obtaining a corrected Euclidean distance between the pixel points based on the defect probability, and clustering and identifying an unobvious ink dot defect area; the detection result and the distribution condition of the ink dot defects are counted, and feedback regulation and control of the ink jet system are achieved; through the pixel point template matching, clustering and color difference correction technologies, the problem of unobvious ink dot defects caused by missing detection is solved, and accurate identification of the ink dot defects is realized, so that the accuracy and reliability of product quality detection are enhanced, and the printing quality of products is improved.

The invention belongs to the technical field of paint printing ink, and particularly discloses high-weather-resistance high-dispersity water-based color paste and a preparation method thereof. The water-based color paste comprises the following raw material components in parts by weight: 2-10 parts of an organic silicon hyperdispersant, 30-40 parts of pigment, 3-10 parts of a cosolvent, 1-3 parts of a pH stabilizer, 0.5-1 part of an organic silicon defoamer, 0.2-0.5 part of a bactericide and 45-60 parts of deionized water, the water-based color paste prepared by the invention can realize the functions of high weather resistance, high dispersion stability, substrate wetting, high color development and the like.

The invention provides a true color imaging method based on a prism light splitting 3CMOS camera, three prism light splitting channels are respectively received by three image sensors, and the following steps are realized based on an FPGA: prism light splitting non-uniformity correction of RGB three channels, registration of three-channel images, synchronous splicing of three-channel pixel data, and application of an automatic white balance algorithm to color restoration. According to the invention, real-time registration, reconstruction and image processing of images acquired by the prism splitting 3CMOS camera are realized, and higher color precision and better imaging quality are brought.

The invention relates to full-color erasable thermosensitive photographic paper and a preparation method thereof. The full-color erasable thermosensitive photographic paper comprises a protective layer, a thermosensitive coating and a base material which are sequentially arranged from top to bottom, the thermosensitive coating comprises a yellow thermosensitive coating, a first middle layer, a magenta thermosensitive coating, a second middle layer and a cyan thermosensitive coating which are sequentially arranged from top to bottom. According to the full-color erasable thermosensitive photographic paper prepared by the invention, yellow, magenta and cyan with relatively high color density can be realized, and the situation that the color density of yellow, magenta and cyan in the current thermosensitive photographic paper is not enough is avoided; compared with the prior art, the full-erasable thermo-sensitive paper has the advantages that independent yellow, fuchsin and cyan can be printed, color overlapping can be carried out, and only tiny deviation of color coordinates occurs after 100 times of repeated erasing, so that the full-erasable thermo-sensitive paper can be repeatedly used, and the problems of serious environmental pollution and resource waste caused by the fact that ink-free photographic paper can only be used once in the prior art are solved.

The invention discloses a full-color LED screen optical adjustment and intelligent energy-saving detection method, and relates to the field of LED screen adjustment and energy saving. Ambient light data is collected through a bionic distributed sensor network, and features such as illumination intensity and color temperature are extracted through PCA dimension reduction; constructing a human eye visual perception model based on the CIE chromaticity diagram, and introducing a visual adaptation factor to dynamically adjust color gamut mapping; dividing a screen dimming area, and calculating an optimal brightness value by adopting a local contrast enhancement algorithm; the RGB ratio is optimized through a genetic algorithm, and the color difference between the mixed spectrum and the target color gamut is minimized; power consumption is monitored in real time, an energy consumption prediction model is established, and an optimization strategy is triggered when a predicted value exceeds a threshold value. The color gamut coverage rate is high, the local contrast ratio is excellent, and the comprehensive energy-saving rate is greatly improved; blue light harm is reduced, screen flicker is eliminated, the visual comfort is improved, the functions of peep prevention and block chain energy consumption evidence storage are achieved, and the display quality, the energy efficiency performance and the use safety of the LED screen are comprehensively improved.

The invention relates to the technical field of liquid crystal display, and provides liquid crystal display equipment based on a field order and a color image display method, which are used for improving the display quality of color images. In the method, one mixed color field and two monochromatic color fields form three color field distributions, the positions of the mixed color fields in each color field distribution are different, and the main colors of the mixed color fields at different positions are different, so that for each backlight partition, the distortion degree of an image block under each color field distribution can be calculated according to the content of the image block corresponding to the backlight partition, and the distortion degree of the image block under each color field distribution is calculated. The color field distribution corresponding to the lowest distortion degree is selected as the target color field distribution, dynamic adjustment of the position of the mixed color field in the three subframes of each image block is achieved, the displayed picture is made to be matched with the content of the image block, and therefore the color separation phenomenon is relieved, color distortion is reduced, and the quality of the displayed image is ensured.

The invention relates to a commercial building plane automatic color filling method based on a CAD embedded geometry engine. The problems that in the prior art, a traditional commercial building plane is low in color filling efficiency and insufficient in automation degree, and a color scheme is difficult to reuse and share are solved. The method comprises the following steps: S1, carrying out drawing preprocessing and layer configuration; s2, image area identification and interactive display; s3, manually processing the image and screening invalid areas; s4, calculating and displaying an image area; s5, performing dynamic rule matching on the captured business state label and the color filling area; s6, performing color scheme adjustment and one-key color filling operation; and S7, scheme multiplexing output. The method has the advantages that the color matching efficiency is high, the color filling automation degree is effectively improved, the design efficiency and operation convenience are remarkably improved, and the multi-business-form adaptation capacity of commercial design is enhanced.

According to the yellow leuco dye developing ink and the preparation method thereof disclosed by the invention, by optimizing the molecular structure of the yellow leuco dye and the matching relationship between the yellow leuco dye and a color developing agent, the ink can quickly develop under the conditions of low temperature, slight pressure or low-concentration acid / metal salt, the developing effect is distinct, and handwriting or patterns are clear and visible; by selecting a yellow leuco dye with better photostability of a color body after color development and introducing an antioxidant component, the color fading of a color development product under the irradiation of ultraviolet and visible light is effectively delayed, and the storage period of color development images and texts is prolonged; by improving an ink formula and a packaging process, the ink can keep good leuco stability in different environments such as high temperature, high humidity, low temperature and the like, and the phenomena of self color development, non-uniform color development and the like are prevented. The ink is colorless or light in color under normal conditions, can show bright yellow after being stimulated by acid, metal salt or heat, and has the characteristics of high color developing sensitivity, clean background and wide application range, and the comprehensive performance of the ink is remarkably improved.

The invention discloses a 3D printing method for realizing high color accuracy and real-time effect preview based on a pre-calculated material stacking scheme database, and belongs to the technical field of 3D printing. The core of the method is that a material stacking scheme database of the corresponding relation between printing result colors and material stacking schemes and printing effects is constructed in advance: after multiple basic semitransparent printing materials are arranged according to a specific rule, stacking printing is carried out through different sequences and combinations, and a physical color sample array is formed; after highlight interference is eliminated through a polaroid, color data of all samples are accurately collected, and a mapping relation is established between the color data and corresponding material stacking schemes and printing effects and stored in a database. When target color content is printed, the system queries the database through an efficient color matching algorithm, the optimal printing formula is rapidly obtained, meanwhile, the printing effect is accurately previewed through the real-time rendering technology, and the query efficiency of the algorithm is improved through the ordered arrangement structure of the database. And finally, the printer prints layer by layer according to the obtained stacking scheme, and a pattern effect with accurate colors is presented on the bottom surface of a finished product. According to the method, repeated calculation of a complex color model is avoided, and color printing which is high in color accuracy, low in cost, high in efficiency and compatible with various consumables is achieved through the experience database constructed at a time.

The present invention relates to a photonic crystal coating, a preparation method, and its application, belonging to the technical field of photonic crystal structure color generation. The photonic crystal coating comprises the following components, measured in parts by weight: 100 parts of a hard-core-soft-shell nanosphere dispersion, 1 to 8 parts of a leveling agent, 0.1 to 0.4 parts of a stray light absorber, and 0 to 6 parts of a high-boiling-point additive. The photonic crystal coating is directly prepared from hard-core-soft-shell colloidal nanospheres. The resulting structural color coating exhibits excellent structural stability (associated with high color fastness), high color saturation, and a significant iridescent effect.

The invention relates to a coloring composition, a color photoresist, a color filter and a display device, the coloring composition comprises a dye and a dispersant, the structural formula of the dye is shown as follows: at least one of X, R1, R2, R3, R4, X1, X2, X3 and X4 in dye molecules is configured to be connected with the dispersant through a chemical bond. According to the coloring composition provided by the invention, the dye and the dispersing agent can be connected through chemical bonds, so that precipitation or migration of the dye in the color filter prepared from the coloring composition is avoided, the weather resistance of the dye in the color filter is improved, and the reliability of the display device is improved.

The invention discloses a display panel and a manufacturing method thereof, and electronic paper. The display panel comprises a first array substrate and a first substrate; the first substrate is arranged on the first array substrate, the first substrate is provided with a first pixel space, and a first photonic crystal, a first black substance and a first dispersion medium are accommodated in the first pixel space; wherein the first array substrate, the first substrate, the first photonic crystal and the first dispersion medium can transmit light; the display panel comprises a display state and a transparent state, in the display state, the first photonic crystals are uniformly dispersed in the first dispersion medium, and at least part of the first black substance is adsorbed to the bottom wall of the first pixel space; in a transparent state, the first photonic crystal gathers in the first dispersion medium, and the first black substance is adsorbed on the side wall of the first pixel space. The electronic paper applying the display panel can have high color display and high transparency.

To provide an aqueous ink composition for writing instruments with high practicality capable of obtaining clear fluorescent handwriting high in color development at the time of ultraviolet beam irradiation, without generating inconveniences such as deposition and strike through, by making a specific oil-soluble fluorescent material applicable as a colorant of an aqueous ink, and provide writing instruments incorporating the same.SOLUTION: An aqueous ink composition for writing instruments containing water as a main solvent, luminescent compounds represented by general formula (1), ethers with an SP value of 10 to 11.5, and polyoxyethylene polyoxypropylene alkyl ethers, as well as writing instruments incorporating the same.SELECTED DRAWING: None

The application discloses a light source assembly and a backlight module, and relates to the technical field of display. The light source assembly comprises a support structure and at least four light emitting components. The support structure is formed with at least four accommodating grooves arranged at intervals and a light emitting surface formed on one side of the accommodating grooves. The at least four light emitting components are arranged corresponding to the at least four accommodating grooves and comprise a first light emitting component, a second light emitting component, a third light emitting component and a fourth light emitting component. Light emitted by at least three light emitting components can be mixed to form white light on one side of the light emitting surface, and at least one light emitting component can emit white light on one side of the light emitting surface. The application places each light emitting component in a plurality of accommodating grooves arranged at intervals, so that each light emitting component independently emits light and dissipates heat, and a light emitting component emitting white light in a full spectrum fills the peak and valley between narrow-band primary color spectra, thereby suppressing color deviation and reducing light leakage and color cast, giving consideration to high color gamut and high color rendering, and improving the stability of display quality.

The application discloses an LED lamp light mixing method and a light mixing circuit, which can solve the problem of color gamut waste caused by the mismatch between the color gamut of an app and the color gamut of a whole lamp while ensuring high color accuracy, and ensure the accuracy of the monomial quadratic function current calibration algorithm, so as to avoid the error of the monomial quadratic function current calibration algorithm caused by constant luminous flux; the cross multiplication algorithm is used to select the light mixing light source, improve the algorithm efficiency, reduce the MCU algorithm power requirement, and avoid the problem that the target color point cannot calculate the corresponding light source current proportion due to the fixed color gamut through the dynamic color gamut.

The invention discloses a color-changeable TPU (thermoplastic polyurethane) film as well as a preparation method and application thereof, and belongs to the technical field of intelligent high polymer materials. The TPU film comprises a thermoplastic polyurethane (TPU) matrix, a color change response system, an interface stabilizer and a functional additive. The color-changing response system comprises at least two different types of color-changing materials, so that multiple environmental stimulus response color changing, such as temperature and light dual response, is realized. The film has the characteristics of sensitive color change response, high color contrast, good color change reversibility, excellent fatigue resistance, high mechanical property retention rate and the like. Through formula and process optimization, the technical problems that a single color-changing material is insensitive in response, low in color-changing contrast ratio, poor in durability and poor in compatibility with a TPU matrix are solved. The TPU film prepared by the invention can be widely applied to the fields of intelligent wearing, safety anti-counterfeiting, dynamic decoration, sensor indication and the like.

To provide a unit equipped with an illumination light guide or an image guide for a single-use endoscope which enables high transmittance and high color reproduction fidelity.SOLUTION: Provided is an illumination device including at least one illumination light guide 30 and / or an image guide for transmitting electromagnetic radiation, wherein the illumination light guide or the image guide has a proximal end face for incidence or emission of the electromagnetic radiation and a distal end face for emission or incidence of the electromagnetic radiation. The proximal end face and / or the distal end face consist at least partially or in some sections of a transparent plastic part or are integrally formed thereon from a transparent plastic, wherein the transparent plastic is biocompatible and / or does not have cytotoxic properties for human or animal cell structures for an action time of less than one day. A unit which can be produced at low cost can thus be realized, in particular for a single-use endoscope 1.SELECTED DRAWING: Figure 1

The invention relates to the technical field of organic electroluminescence, in particular to a fused heterocyclic compound and an organic electroluminescence device containing the compound. The compound has a characteristic double-boron-nitrogen aromatic fused structure, and rigid substituents such as phenanthrene amine, naphthylamine, anthramine and fluoranthene amine are introduced to the periphery of the compound, so that a molecule has a relatively high T2 energy level, the T1 energy level is remarkably reduced, T2 is slightly higher than S1 energy level, T2-T1 internal conversion is inhibited, T2-S1 exciton up-conversion is promoted, the exciton utilization rate is increased, and the luminous efficiency is remarkably improved. An OLED device prepared from the compound has the advantages of low starting voltage, high color purity, high efficiency and excellent service life, meets the requirements of a high-performance display panel on a luminescent material, and has a good application prospect.

The utility model provides a display panel and a display device. The display panel includes: an array substrate; the plurality of sub-pixels are arranged on the array substrate, and the plurality of sub-pixels comprise a first color sub-pixel; the multiple light reflection layers cover the sides, away from the array substrate, of the multiple sub-pixels in a one-to-one correspondence mode, and the multiple light reflection layers comprise first light reflection layers covering the first color sub-pixels; wherein the first light reflection layer comprises a first metal layer, a transparent dielectric layer and a second metal layer which are sequentially stacked in the direction gradually away from the array substrate. According to the display panel provided by the embodiment of the invention, through the arrangement of the first light reflecting layer, the first light reflecting layer can absorb and reflect the light with the specific wavelength, so that the high contrast ratio and the high color gamut of the display panel are realized, and the lighting effect of the display panel is improved.

The utility model discloses a special screw machine barrel for a strong-blanking high-color-mixing paint bucket, which comprises a machine barrel, a flange and a tail end, a connecting barrel is arranged at the front end of the flange, the tail end of the machine barrel is screwed in the connecting barrel, and the tail end comprises a matching flange, a connecting section and a connecting rod which are correspondingly assembled with the flange; the novel charging barrel of the vertical injection molding machine improves the existing brand-new original charging barrel of the vertical injection molding machine in the market, can be used for manufacturing paint buckets, and has the advantages that the blanking is fast, and mixed colors are convenient to use. And after the tail end is installed on the injection molding machine and damaged, the tail end is convenient to replace and maintain and flexible to use, and the use quality is improved.

Provided is a composition comprising a pyrene-based organic compound H as a host material, and a luminophor E having a narrow emission spectrum. Wherein the organic compound H has higher stability, and the composition can contain an organic resin, is convenient for printing or coating film formation, and is cured by heating or ultraviolet. The invention also provides an organic light-emitting device containing a color conversion layer, the color conversion layer comprises the composition, the organic compound H absorbs light of an excitation light source and transfers energy to the luminous body E, and the luminous body E emits emergent light with narrower half-peak width after absorbing the energy of the organic compound H; these light emitting devices having a narrow half-width can be manufactured into display devices having a high color gamut.

The present application relates to an image processing method, device, electronic device, and computer-readable storage medium. The image processing method includes: obtaining a user's enhancement preference information; obtaining an image to be processed, and dividing the image to be processed into multiple areas to be enhanced according to the hue distribution of the image to be processed; and performing corresponding color enhancement processing on each of the areas to be enhanced according to the enhancement preference information to adjust the color attributes of the image to be processed. By dividing the image to be processed into multiple areas to be enhanced based on the hue distribution, corresponding color enhancement processing can be performed for different hues, thereby effectively avoiding the problem of color distortion in the process of color enhancement. Moreover, combined with the obtained user enhancement preference information, a personalized and accurate color enhancement effect can be provided based on the user's preferences, thereby realizing an image processing method with a high degree of personalization and high color reproduction.

The application discloses a short-process printing process of polyester-cotton blended fabric, which comprises screen printing by using active disperse dyes containing double active groups and steaming by using alcohol vapor; the double active groups include hydroxyethyl sulfone sulfate group and CH2CH(OH)CH2X (X is Br or Cl); the CH2CH(OH)CH2X can be converted into an epoxy group under alkaline conditions and can react with the alcohol vapor during the steaming process to realize the cross-linking between dye molecules, so that the effects of improving the fixation efficiency and shortening the process flow are achieved, and then the printed fabric with high color depth and high color fastness is obtained.

The present invention discloses a single-component white light coordination polymer, the chemical formula of which is [Zn(bpdo)(fum)(H2O)2] n , where bpdo represents 4,4′-bipyridine-N,N′-dioxide, and fum represents fumaric acid; the structural unit of the single-component white light coordination polymer is a triclinic system with a space group of P1 and unit cell parameters of #imgabs0#α=87.312(7)°, β=82.988(8)°, and γ=73.760(8)°. The present invention synthesizes a single-component white light coordination polymer crystalline material in a one-step solvent thermal reaction; the material can emit white light within an excitation wavelength range of 320-370nm and gradually changes from pink to yellow-green within 5 minutes under irradiation with a 200W xenon lamp; the material has the dual functions of emitting white light with a high color rendering index and photochromism.