941 results about "Colored white" patented technology

The invention relates to the technical field of image recognition, and discloses a food freshness detection method and system based on image recognition, and the method comprises the steps: collecting an initial image, carrying out the white balance correction through a white reference card, and obtaining a corrected image with an accurate color; performing target area segmentation on the corrected image, extracting a food main area and eliminating background interference; pixel sampling is carried out on the main area image, the main area image is converted to Lab, HSV and RGB color spaces, and redness, yellowness, brightness, hue angle and red-green ratio are extracted to form a multi-dimensional color feature set; establishing a difference feature vector based on the feature set and a preset standard sample, and comparing the deviation degrees of the target food and the standard sample on the multi-dimensional color features; and finally, judging the freshness grade of the food according to the deviation degree. According to the invention, lossless and rapid food freshness grading detection is realized.

The invention discloses a backlight control method, display equipment and a computer readable storage medium, and relates to the technical field of liquid crystal display, the backlight control method is applied to a backlight system, the backlight system comprises an LED backlight source, the LED backlight source comprises a three-primary-color light-emitting source and a white light-emitting source, and the method comprises the steps of obtaining a to-be-displayed target image, determining a three-primary-color backlight gray value of the three-primary-color light emitting source based on the target image; a white backlight gray value is determined based on the three-primary-color backlight gray value, and the white backlight gray value is in positive correlation with the three-primary-color backlight gray value; and driving the three-primary-color light-emitting source to emit light based on the three-primary-color backlight gray value, and driving the white light-emitting source to emit light based on the white light-emitting source, so that the LED backlight source provides backlight. The light emitting efficiency of the backlight source is improved, and the brightness and the color gamut are considered on the basis of low energy consumption.

The invention discloses a color temperature correction method and device of a liquid crystal display system and a storage medium. The method comprises the following steps: determining tristimulus values of original white pixel points of the system in a CIE 1931XYZ color space according to normalized spectral power distribution of a white light backlight source of the liquid crystal display system and a transmittance spectrum of a three-primary color filter of a color film; determining a target RGB color space and a target color temperature, and constructing a color space conversion matrix from the target color space to an XYZ color space; converting the tristimulus values of the original white pixel points of the system in the XYZ color space into the three-primary color channel values of the target white pixel points under the target color temperature in the target color space by using the inverse matrix of the color space conversion matrix; and driving the system to display white according to the three-primary color channel value of the target white pixel point. According to the scheme, the color temperature correction of the liquid crystal display system is realized through a method of combining measurement and theoretical calculation, and the color temperature correction efficiency is improved.

To provide a new application for recycled resin obtained from PET bottle caps.SOLUTION: The present disclosure relates to a multilayer molded container comprising at least: an inner layer containing a pigment 1 and a recycled resin obtained using PET bottle caps; and an outer layer containing a white pigment 2 and a resin 2.SELECTED DRAWING: None

The invention discloses a color cast correction method and device for white picture brightness compensation and a storage medium. The color cast correction method and device are used for performing dual correction on a display screen after Demura compensation is performed on the basis of a white picture. The method comprises the following steps: collecting regional images of a target screen under different exposure times, and calculating to obtain a brightness data mean value of a plurality of regional images; establishing a mapping relation according to the brightness data mean value and the actual brightness data of the regional image; calculating Euclidean distances from the centers of the plurality of regional images to the center of the target screen; constructing a brightness-exposure response function according to the mapping relation and the Euclidean distance to obtain a brightness-exposure characteristic matrix; correcting the brightness data mean value for the first time by using the brightness-exposure characteristic matrix to obtain first corrected brightness data; constructing a chromaticity-brightness correction function of each pixel point in the target screen; and correcting the first corrected brightness data for the second time by using the chroma-brightness correction function to obtain second corrected brightness data.

METHOD FOR CONTROLLING A LIGHT EMITTING DIODE MIXER TO GENERATE WHITE LIGHT FROM A PROJECTOR, SYSTEM Method for controlling light emitted by a projector comprising at least two groups of LEDs, each group comprising at least one LED, of which a first LED has a warm color temperature (CCTWW) and a second LED has a cool color temperature (CCTCW), said method comprising: Determination (DET1) of a plurality of corrected setpoint temperature (CCTCON_C(i)) from the control of a plurality of white light emissions from the projector at a predefined power of the LEDs; Calculation (K1) of coefficients called "warm white" (WWi) and "cool white" (CWi); Generation (GEN1) of a second model (M2) allowing the expression of a warm white coefficient (WWi) to be controlled as a function of the measured color temperature (CCTS); Control (PIL1) of the first group of LEDs and the second group of LEDs. Figure for the abbreviation: Fig. 1

The utility model discloses a crystal label printer which comprises a printer main body and release paper, the printer main body is provided with a printing area for the release paper to pass through, and the printer assembly moves on the printer main body and sprays a pattern layer on the release paper. The printing vehicle assembly comprises a first spray head used for spraying a self-adhesive water layer on release paper, a second spray head used for spraying a white ink layer, a third spray head used for spraying a color ink layer, and a fourth spray head used for spraying a curing gloss oil layer and a gold stamping gloss oil layer. Two film covering assemblies are sequentially arranged at the position, located at the output end of the printing area, of the printer body and used for stamping a gold film on the gold stamping gloss oil layer and covering a release paper pattern with a positioning film after the gold film is stamped, and the gold film is stamped on the gold stamping gloss oil layer through the film covering assembly on the front side to achieve the pattern gold stamping effect. The pattern gilding effect can be achieved without secondary operation after pattern transfer printing, and meanwhile the pattern gilding area can be accurately arranged on the pattern.

The invention discloses a surgical foreign matter leaving monitoring method and device, computer equipment and a storage medium. Comprising the steps that when an operation starts, the gauze number is initialized; acquiring to-be-monitored video data; inputting into a gauze identification model to carry out gauze target identification; when the identification result is that the gauze target is identified, gauze color discrimination is carried out in a gauze color discrimination model to obtain a discrimination result; judging whether the color of the gauze target is white or not; if yes, adding one to the gauze number to update the gauze number; judging whether the current operation is finished; if yes, when the gauze quantity is not equal to zero, giving a gauze remaining alarm; if not, judging whether the color of the gauze target is red or not; if yes, subtracting one from the gauze number to update the gauze number, and judging whether the current operation is finished or not. According to the invention, automatic identification, positioning and counting of the gauze can be realized, and the gauze leaving problem in the operation process is solved.

The invention relates to a colored radiation refrigeration coating and a colored cooling coating, the colored radiation refrigeration coating comprises a white prime coating and a colored surface coating which are matched for use, the sunlight reflectivity of a white bottom layer formed by the white prime coating at the wave band of 0.3-2.5 microns is greater than or equal to 95%, and the sunlight reflectivity of the colored surface coating at the wave band of 0.3-2.5 microns is greater than or equal to 95%. The atmospheric window emissivity at the wave band of 8-13 [mu] m is greater than or equal to 95%; the colored surface coating comprises a first filler, yttrium gallium garnet and first resin, the yttrium gallium garnet is doped with chromium, and the mass fraction of the chromium in the yttrium gallium garnet is 5%-15%. A color cooling coating formed by the color radiation refrigeration coating is bright in color, the sunlight reflectivity at the wave band of 0.3-2.5 microns is larger than or equal to 82%, the atmospheric window emissivity at the wave band of 8-13 microns is larger than or equal to 95%, and the color radiation refrigeration coating has an excellent cooling effect.

A printing apparatus includes a pretreatment-liquid applier, a white-ink applier, a color-ink applier, a colorless-liquid applier, and circuitry. The pretreatment-liquid applier applies a pretreatment liquid to a pretreatment area in a permeable print target. The white-ink applier applies a white ink including an organic solvent to an image forming area in the pretreatment area to form a base layer. The organic solvent seeps into a seepage area around the image forming area. The color-ink applier applies a color ink to the image forming area to form a color image. The colorless-liquid applier applies a colorless liquid including water to a colorless-liquid area including at least a part of the seepage area. The circuitry changes the colorless-liquid area according to a timing of applying the colorless liquid to the colorless-liquid area in a process of applying the pretreatment liquid, the white ink, and the color ink to the permeable print target.

The embodiment of the invention relates to the field of color matching, and discloses a color matching method and tool for pigment. The method comprises the following steps: acquiring a first brightness value of a target color; based on a black pigment and a white pigment, blending a first formula pigment according to a preset proportion corresponding to the first brightness value; wherein the brightness of the first formula pigment is the first brightness value; blending a second formula pigment based on the basic hue pigment; wherein the brightness of the second formula pigment is the first brightness value, and the hue of the second formula pigment is the hue of the target color; and mixing the first formula pigment and the second formula pigment to obtain the final formula pigment. Therefore, through the scientific color matching method, the color matching accuracy and efficiency of color matching personnel are improved.

Lighting system having visible-light source including semiconductor light-emitting devices arranged for generating plurality of visible-light emissions having range of color points including cool to very cool white color point for daytime and warm to very warm white color point for nighttime. Optical system arranged for causing some visible-light emissions to have range of beam widths including relatively wide and narrow beam widths. Mounting system causing range of beam directions. Control system causing visible-light emissions to include daytime configuration having cool to very cool white color point and relatively wide beam width, and nighttime configuration having warm to very warm white color point and relatively narrow beam width. Daytime configuration includes control system for causing visible-light emissions to include lateral- or up-light emissions, promoting relatively high equivalent melanopic lux. Nighttime configuration includes control system for causing visible-light emissions to include down-light emissions promoting relatively low equivalent melanopic lux.

The invention relates to the field of temperature-sensitive materials, in particular to a thermal management fiber membrane and a preparation method thereof. The heat management fiber membrane comprises a base body layer, a color changing layer and a color matching layer which are sequentially arranged in a stacked mode. And the matrix layer is a fiber membrane made of a spinning material. And the color-changing layer is formed by curing a water-soluble adhesive doped with thermochromic microcapsules. The thermochromic microcapsule is gradually and reversibly converted into a white state from a black state along with the rise of the temperature. And the color matching layer is formed by coating photonic crystal emulsion. The thermochromic microcapsule endows the thermal management fiber membrane with a temperature-sensitive discoloration capability so as to adjust the heat absorption and heat dissipation capability at different temperatures. The photonic crystals endow the thermal management fiber membrane with rich colors. The thermochromic microcapsule is attached to the surface of the fiber membrane through the water-soluble adhesive, so that the response speed of color change of the thermochromic microcapsule is increased, and wall material damage caused when the thermochromic microcapsule is doped in a spinning solution for spinning can be prevented, so that the performance of the thermal management fiber membrane is optimized, and the service life of the thermal management fiber membrane is prolonged.

The invention relates to the technical field of bridge deck monitoring, and particularly discloses a wet joint monitoring system for a prefabricated bridge deck, a composite beam prefabricated member comprises a bottom shear nail, a top shear nail, a PBL perforated plate and a vertical trapezoidal key tooth wet joint, and the surface of the composite beam prefabricated member is brushed with white interior wall paint before a test is started; positioning grids are formed by using ink lines to serve as monitoring points, stress data and displacement data of the monitoring points on the surface of the composite beam prefabricated part are obtained and used for obtaining stress data and displacement data of the monitoring points on the surface after a load is applied, a change curve is drawn, damage variables are constructed according to the change curve, and recognition and early warning are conducted according to the damage variables. According to the method, high-precision and generalizable stress-deformation data can be obtained, and a solid foundation is laid for subsequent numerical simulation, health monitoring and remote maintenance.

The invention relates to the technical field of liquid crystal display, and provides liquid crystal display equipment based on a field sequence and a color image display method. White backlight is inserted in a liquid crystal response stage to reduce a color separation phenomenon, and the white backlight is inserted in the liquid crystal response stage, so that white light can be emitted at the time when the original backlight is turned off; according to the backlight module, the original backlight opening time in the color backlight stage is not occupied, so that the backlight source of the backlight module is always in the lightened state, the backlight light efficiency is improved, meanwhile, the backlight source of the backlight module can be prevented from being converted between the two light and dark states of closing and lightening, the image flickering problem is solved, and the image watching quality is improved.

The present disclosure discloses a card having an inclined or excavated edge surrounding the card or part of the surface of the card. At least a part of the inclined or excavated edge or part of the surface of the card may be coloured or in white. The revealed part may particularly be formed by means of a printing process or alternatively by way of superimposed foil layers.

The invention provides a reverse printing ink system based on a positive photosensitive mechanism and application thereof. The printing ink system comprises three types of products, namely black matte printing ink, high-reflectivity white printing ink and green printing ink, the production process of the ink system comprises the following steps: 1) synthesizing the film-forming resin; (2) sharing the film-forming resin with a pigment system, a dispersion medium and a functional additive; and 3) applying the reverse ink system to PCB manufacturing. According to the method, the characteristic of'dissolution in an exposure area 'is realized through positive light sensing, and the problems of scanning splicing printing, color difference and insufficient reflectivity in a traditional solder mask process are solved by matching with a special developing solution and a DI exposure light spot shaping technology; compared with the prior art, the reverse printing ink system has the advantages that the yellowing index, the resolution ratio, the heat resistance and the like are remarkably improved, and the reverse printing ink system is suitable for manufacturing a high-end mini LED / micro LED PCB (Printed Circuit Board).

The invention discloses a monitoring and early warning method and system for luggage production and computing equipment, relates to the technical field of luggage production defect detection, and solves the problems that in the prior art, it is not considered that a reflective material in a luggage presents pure white in a gray image and is mixed with the white of the luggage, so that real holes or stitches are covered, and the quality of the luggage is influenced. And the accuracy of the detection result is reduced. Normal detection image sets of different types of bags are obtained through pre-detection; gray level images of different types of bags on the production line are collected in real time through a visual sensor; judging whether a light reflection phenomenon exists in the gray images of the corresponding types of bags on the same production line or not; judging whether a visual sensor needs to be added to the corresponding production line; determining the number of added visual sensors of the corresponding production line according to the reflection condition; a defect detection model is constructed to carry out fault detection on the gray level image with the light reflection phenomenon to obtain a fault type, and an early warning signal is sent out; according to the invention, the accuracy of luggage production detection is improved.

This temperature-indicating label is provided with: a base material; an adhesive layer to be affixed to the surface of a living body; and a temperature-indicating ink layer that is positioned between the base material and the adhesive layer, and that is configured so as to change color in accordance with the temperature of the temperature-indicating ink layer. The stress at 20% stretching is 0.2 N / mm2 to 10.0 N / mm2. The thickness of the temperature-indicating ink layer is 1-9 µm. In a state in which the adhesive layer is affixed to a white plate, the color difference ΔE* ab in the L*a*b* color space between a first state in which the temperature-indicating ink layer exhibits a first color and a second state in which the temperature-indicating ink layer exhibits a second color different from the first color is greater than 10. The color change between the first color and the second color is visible via the base material.

Described herein is a coated building panel that comprises a side surface that is textured and exhibits a white and / or color. The building panel comprising an upper surface opposite a lower surface and a side surface extending between the upper surface and the lower surface, a coating applied to the side surface, the coating comprising an inorganic particle having a disk shape and an ionic dispersant comprising an ionic group that are present on a repeating unit and the ionic dispersant comprising at least two of the repeating units.

The embodiment of the application discloses an image processing method and device, relates to the technical field of image processing, and can identify and process white bottom icons, and improves user experience. The specific scheme is as follows: color information of a picture to be rendered is acquired; the color information of the picture to be rendered comprises color categories of the picture to be rendered, color values of four corners of the picture to be rendered, a proportion of non-transparent pixels in the picture to be rendered, and a proportion of white pixels in the picture to be rendered; and based on the color information of the picture to be rendered, if it is determined that the picture to be rendered is a white bottom icon, the picture to be rendered is subjected to inverse color processing.

Disclosed are a liquid crystal fiber reinforced polyester resin composition, a preparation method therefor and a use thereof. The liquid crystal fiber reinforced polyester resin composition comprises the following components in parts by weight: 100 parts of PCT resin; 5-50 parts of white pigment; 5-30 parts of liquid crystal fiber; and 0.5-5 parts of an auxiliary agent. The fineness of the liquid crystal fiber is 900-3200 D. In the present invention, liquid crystal fibers having a specific fineness are added to a PCT resin matrix material, so that a prepared composition has relatively good strength and reflectivity, and the strength and the reflectivity remain high after SMT processing.

The present invention relates to a polymer composition comprising polypropylene and glass fibers. The polymer composition according to the present invention has a white or light color and an excellent impact resistance retention.

This invention relates to the field of image recognition technology and discloses a method and system for detecting food freshness based on image recognition. The method includes: acquiring an initial image; performing white balance correction using a white reference card to obtain a color-accurate corrected image; subsequently, segmenting the target region of the corrected image, extracting the main food region, and removing background interference; sampling pixels of the main region image and converting it to Lab, HSV, and RGB color spaces, extracting redness, yellowness, brightness, hue angle, and red-green ratio to form a multi-dimensional color feature set; establishing a difference feature vector based on this feature set and a preset standard sample, comparing the degree of deviation between the target food and the standard sample in multi-dimensional color features; and finally determining the freshness grade of the food based on the degree of deviation. This invention achieves non-destructive and rapid food freshness grading detection.

A scenario-adaptable color-changing ink and a corresponding solar glass product are provided. The ink includes 7-30 parts by weight of photopolymer, 8-20 parts by weight of photoactive monomer, 1-5 parts by weight of photosensitizer, 30-55 parts by weight of weather-resistant resin, 1-10 parts by weight of curing agent, and 1-15 parts by weight of pearlescent pigment. The pearlescent pigment is at least one interference pearlescent pigments with weather-resistance, which has no color. Each sheet of the pearlescent pigment can be considered as a miniature prism which can break the white composite light into colorful monochromatic light, thus allow the coating of the printing ink to present a beautiful pearl luster and metallic luster. The pattern color which is visible by human is a result of overlaps and interferes of lights that the incident light is multiply reflected and refracted by the sheets of transparent pearlescent pigment.

The invention relates to the technical field of k'o-ssu technology and ink art, and discloses a color matching silk twisting method which comprises the following steps: S1, selecting silk threads for traditional k'o-ssu as ground color wefts and ink color wefts; s2, respectively splitting the ground color wefts and the ink color wefts into 12-20 monofilaments, and adjusting the thickness difference of each monofilament through a manual filament splitting method to form a filament diameter gradual change effect; and S3, according to the writing and ink layers of the freehand wash and ink painting, the ground color silk threads and the ink color silk threads are twisted according to a seven-two-three matching method. According to the color matching silk twisting method and the weaving method of the freehand wash and ink painting, natural white raw silk and indigo dyed raw silk are twisted according to different proportions of coke ink, dense ink and light ink through a seven-two-three matching method, and a technology of twisting three yarns and loosening one yarns is combined, so that wefts are gradually changed in layers due to different proportions of ink silk yarns and different twisting modes; the intermittent linear structure formed by loose twisting simulates the dry pen texture of the ink painting, and the problems that the ink color layer is fuzzy and the dry pen texture is deficient are solved.