1425 results about "Color changes" patented technology

The invention discloses a video stream dynamic fragmentation encryption and block chain evidence storage method, and relates to the technical field of video content security, and the method comprises the steps: calculating a color histogram difference value and an optical flow vector change rate between adjacent frames of an input video, marking the difference value as a scene switching point when the difference value exceeds a preset threshold value, and storing the scene switching point; the method comprises the following steps: preliminarily dividing a video into a plurality of scene segments according to scene switching points, performing content complexity evaluation on the scene segments, calculating gray level co-occurrence matrix characteristics of each frame of image through texture density analysis, calculating edge complexity to extract the number and distribution of Canny edges, and performing motion vector statistics to analyze the size and direction of inter-frame object displacement. The change rate between adjacent pixels in the color space is measured according to the color change gradient; the video stream dynamic fragment encryption and block chain evidence storage method is suitable for video contents of different types and complexities, and has relatively high detection accuracy and robustness.

The invention relates to the technical field of image analysis, in particular to a camellia oleifera disease and insect pest recognition system based on an image recognition technology, which realizes the structured expression of an image sequence by combining the correlation characteristics of an image time sequence and a scab evolution trajectory, forms a time axis index by using shooting time and cleans redundant images. The method effectively improves the continuity and reliability of input data, comprehensively judges the morphological dynamic state of disease spots and accurately depicts the evolutionary states of disease spot expansion, color change and the like through the comparison mode of edge texture change and main color center offset paths, remarkably enhances the staged judgment capability of disease and pest development, improves the image semantic understanding capability, and improves the image quality. Through a multi-dimension matching strategy of a closed region, a color shift direction, area jump and the like, a calibration coding sequence with traceability and staged grading capability is constructed, and the discrimination sensitivity of the system to the early stage, the middle stage and the diffusion stage of diseases is greatly improved.

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a steel sheet pile joint sealing performance in-situ detection process and a monitoring method. Through the cooperative design of the embedded pipe and the detection hole, the embedded pipe is filled with the liquid reagent, and if leakage happens to the joint of the steel sheet pile, the solid reagent in the detection hole can make contact with the liquid reagent to change color. Leaking stoppage is carried out after the color changing position is detected, and long-term monitoring is carried out by monitoring the soil body index of the leaking position so as to be used as a supplement of a detection process. The problem of ex-situ detection of steel sheet pile joint leakage and the problem of difficulty in leaking stoppage are solved, and the normal function of the steel sheet pile under the long-term working condition can be guaranteed.

The invention provides a medical equipment optical element waterproof film quality detection method and system, and belongs to the technical field of detection, a light source is controlled to emit light to a horizontally placed to-be-detected optical element from N different directions along the same light emitting angle, and N detection images are acquired based on an image acquisition device; and comparing at least three of the images, obtaining a plurality of change parameters for representing the color change degree according to the comparison result, and determining whether the optical element to be detected is qualified or not according to the consistent degree of the plurality of change parameters. According to the medical equipment optical element waterproof film quality detection method and system provided by the embodiment of the invention, detection of the uniformity degree of the film on a non-planar element is realized through comparison of overall colors.

The invention relates to the technical field of image processing, in particular to an optical lens surface defect detection method and system based on image processing, and the method comprises the following steps: obtaining an optical lens surface image, decomposing the optical lens surface image into three independent color channel intensity data of red, green and blue, and performing contrast adjustment on the color channel intensity data of each channel to generate a corrected color channel set. According to the invention, through performing detailed color channel decomposition and targeted contrast adjustment on the obtained surface image of the optical lens, the color difference degree between the defect area and the background area in the image of the optical lens is improved, and the detail expression effect of the defect area is enhanced; furthermore, through local calculation of intensity difference between color channels and spatial gradient amplitude analysis, color change and spatial features are effectively fused, and the visual expressive force of a defect area is enhanced.

The utility model relates to the technical field of extrusion molding equipment, and discloses a quick color changing device for secondary coating of an optical cable, which comprises a main machine hopper, a support plate is fixedly connected in the main machine hopper, mounting ports are symmetrically arranged on the support plate, a first containing hopper and a second containing hopper are arranged at the mounting ports, and the first containing hopper and the second containing hopper are arranged in the main machine hopper. A color changing assembly is arranged on the supporting plate and comprises a control rod rotationally installed on the supporting plate, the upper end of the control rod is fixedly connected with a color changing knob, a color changing piece is fixed to the lower end of the control rod, and the color changing piece is in a cross shape. According to the color changing device, the color changing component is arranged, the color changing knob can be rotated to realize the function of releasing the color masterbatch, so that the natural color base material and the color masterbatch can be conveniently mixed, the function of quickly changing the color is realized, and the color changing device is compact in overall structure, does not need to additionally occupy the space at the upper part of the screw extruder and is convenient to use.

The invention belongs to the technical field of display, and particularly relates to a self-adaptive display method of an LCD (liquid crystal display) screen, terminal equipment and a storage medium. And according to the frame rate of the video to be played and the pixel color change condition in the color sequence corresponding to each frame, determining that the duration required for completing each color change in the color sequence by the pixel is within the duration limited by the frame rate, if not, carrying out replacement adjustment on the color in the color sequence by using the replacement color in the replacement color set, and if not, carrying out adjustment on the color in the color sequence by using the replacement color in the replacement color set. According to the method and the device, each color change in the pixel completion color sequence is ensured to be within the limited duration, so that the problem of smear and ghosting during video playing is prevented, and the replacement process is not perceived by a user because the replacement color and the replaced color are the same color which cannot be distinguished for the user, so that the overall watching experience of the user is ensured.

The present application provides an interface processing method, an electronic device and related devices. In this method, after the electronic device performs saturation processing on the colors of each channel, since the colors of each channel change, there is a color change amount. Different from the prior art, in the embodiments of the present application, for different colors of each channel, the electronic device can also perform different degrees of enhancement processing on the color change amounts of each channel. That is, for different colors of each channel, the electronic device can increase or decrease the change amounts of different colors to different degrees to adjust the saturation of different colors, so as to improve the color penetration, thereby improving the color fusion of the image and the foreground UI elements, and further improving the immersion feeling when the user browses the image and the foreground UI elements.

The invention relates to the technical field of LED control, and discloses a multi-mode LED swimming pool lamp control method, system and device. The method comprises the following steps: calculating switching path pre-calculation data based on a remote controller mode switching instruction and color characteristic parameters of E light modes; according to the switching path pre-calculation data, carrying out progressive modulation on the RGBW four-channel PWM duty ratio to obtain a linear transition modulation sequence; on the basis of the linear transition modulation sequence, trajectory calculation is carried out on dynamic change mode color change in a CIE Lab color space, and color transition trajectory parameters are obtained; and closed-loop control is carried out on RGBW four-channel LED currents according to the color transition track parameters, PWM control signals are obtained, progressive adjustment of the PWM duty ratio is achieved, and the visual abrupt sense and the flicker phenomenon caused by traditional abrupt change type switching are eliminated.

The present invention relates to a flexible optical variable thin film with light-induced angle-dependent color change and a preparation method thereof. The base film is selected from one of biaxially oriented polyester film (BOPET), biaxially oriented polypropylene film (BOPP), OPP and nylon (PA) film. By using suitable equipment, processes and materials, an adhesive layer, a reflective layer, a refractive layer and a protective layer are plated and coated based on metals Cr\AL and polymers. It is fully considered that the finished product can still maintain flexibility after the drying and forming of each film layer, and light can propagate between different film layers. As a result of multiple reflections and refractions interacting with each other, an interference phenomenon of "two-color effect" of light occurs, resulting in a light-induced angle-dependent color change effect, and endowing the thin film with different bright lights and colors from multiple perspectives.

The invention relates to the field of textile defect detection, in particular to a textile defect detection method which comprises the following steps: S1, acquiring first image data of a textile; s2, extracting second image data containing printing and dyeing patterns from the first image data; s3, printing and dyeing image data and edge image data are constructed according to the second image data; s4, calculating the stretching degree value of the textile in each stretching direction according to the edge image data; according to the method, when the stretching degree of the textile in each direction is calculated, due to the fact that the texture of the textile instead of a foreground pattern is analyzed, the method is not sensitive to interference factors such as color changes, pattern content and slight stains, and compared with a common detection method, accurate stretching percentage values in all directions are provided, and the detection accuracy is improved. And simple qualification or disqualification judgment is not carried out, so that the calculation precision is improved.

The invention discloses a vehicle window control method, system and device and a vehicle. The method comprises the following steps: acquiring optical parameters of light incident to a first window area of a vehicle at the first time, wherein the optical parameters comprise first illuminance and first optical radiation intensity; and setting optical performance parameters of the first vehicle window area according to the optical parameters. According to the embodiment of the invention, the optical performance parameter of the first vehicle window area is cooperatively set by combining the illuminance and the optical radiation intensity, so that the dynamic environment response capability of the vehicle window glass color changing function can be remarkably improved, and the effects of intelligently identifying complex illumination scene changes and adaptively adjusting vehicle window glass color changing are achieved; moreover, the implementation of the embodiment of the invention does not depend on high-cost materials, so that the cost is also saved.

The present invention relates to the technical field of cigar processing and discloses a method for producing a dark brown cigar wrapper. Sun-grown cigar wrapper tobacco leaves are relatively thick, and while direct rehydration using conventional methods can achieve ideal rehydration results, the moisture content after rehydration is poorly uniform, hindering uniform color change in the leaves. The present invention sequentially performs a primary vacuum treatment, rehydration of the leaves, stacking, fermentation, a secondary vacuum treatment, and low-temperature drying to produce a dark brown cigar wrapper with excellent color uniformity. Specifically, the present invention vacuum treats the tobacco leaves before and after fermentation to achieve uniform color change.

The utility model discloses a water quality COD (Chemical Oxygen Demand) detection device, and relates to the technical field of CODMn detection, the water quality COD detection device comprises a base, a plurality of counter bores are formed in the base at intervals, and a beaker is placed in any counter bore; a plurality of groups of detection devices for detecting color change of liquid in the beaker are arranged on the base; a plurality of stirring mechanisms are further arranged at the bottom of the base; and the plurality of detection devices and the plurality of stirring mechanisms are in one-to-one correspondence with the plurality of counter bores. The detection device is mounted on the base, double detection means of a photoelectric receiver and a camera can be adopted in COD detection titration, and meanwhile, a monitoring function is achieved, so that the detection stability and repeatability are improved.

The invention provides an evaluation method for removing sunscreen and application thereof, and the evaluation method comprises the steps: precisely collecting and analyzing skin image parameter values of a subject before and after using a sunscreen product and after cleaning through an image collection and analysis technology; the removal (cleaning) rate is represented by the ratio of the color change value delta E2 of the cleaned skin to the color value delta E1 of the skin coated with the sunscreen, so that the change of the sample before and after cleaning is considered, and the influence of the coated sample and the color of the skin is also considered. The unloading sunscreen evaluation method not only improves the accuracy of data acquisition, but also ensures the accuracy of the evaluation result and the comparability of the performances of different products through specific cleaning rate calculation and sunscreen unloading grade evaluation, and has wide adaptability and practicability.

The utility model discloses a multi-layer extrusion die head capable of changing colors quickly, which comprises a wall thickness control assembly, a feeding assembly and a die body assembly, the wall thickness control assembly is arranged above the die body assembly, the die body assembly comprises a die core, a core rod and a mouth die, the mouth die is arranged at the bottom of the die core, the core rod is arranged in the die core, a lifting end of the wall thickness control assembly is connected with the core rod, and a lifting end of the feeding assembly is connected with the mouth die. A plurality of sets of runner structures distributed in the circumferential direction are formed in the mold core, the feeding assembly communicates with the head ends of the multiple sets of runner structures, the tail ends of the multiple sets of runner structures communicate with the mouth mold, and the runner structures are of inverted-Y-shaped structures. The inverted-Y-shaped runner structure is arranged in the mold core, so that the flowing paths and changes of raw materials are increased, residual raw materials can be washed away by new raw materials more easily, and the phenomenon of color deviation is avoided; and compared with a complex runner, residual old raw materials can be discharged more quickly, so that the time required by color changing is greatly shortened, the production efficiency is improved, and the production pause caused by color changing is reduced.

The invention provides a cyanide generation and absorption efficiency monitoring method based on double-color indicator gradient change, and belongs to the technical field of cyanide monitoring, the absorption process is visually reflected through the double-color indicator gradient change, the absorption efficiency can be rapidly judged through color change without a complex instrument, the operation is simple and convenient, and the cost is low. And gradient color development and spectral analysis are combined, so that the detection limit can reach a mu g / L level, the trace detection requirement is met, and the absorption condition of the low-concentration cyanide can be accurately monitored. Through real-time change of the color gradient, the concentration distribution and the reaction process of the cyanide in the absorption process can be dynamically reflected, real-time data support is provided for industrial process control and environmental emergency monitoring, expensive detection equipment is not needed, the reagent cost is low, and the method is suitable for large-scale popularization and application.

A color changing device is disclosed, which allows homeowners, designers, and builders to change the look and color of interior and exterior home décor in a low cost and effective manner. The color changing device comprises a frame component that can be positioned around cabinets, siding, shutters, etc., and secured with clips or other securing means. The frame component comprises a white PVC material with a clear or transparent face. Between the face and the PVC material is a set of built-in variable LED lighting that can be changed via a remote control and powered via electricity or solar panels. Thus, users can activate the LEDs at any time with the remote control and alter their look and color.

To provide a building material that can reduce color change between a dry state and a wet state and suppresses deterioration of appearance.SOLUTION: A surface exhibits a wet color due to a solvent. Even in a dry state before getting wet, the surface becomes a color like being in a wet state, so discoloration when it gets wet is hardly noticeable. The solvent preferably has a boiling point of 170°C or higher. In this case, the solvent is less likely to evaporate from the building material so as to make it easier to maintain the wet color.SELECTED DRAWING: Figure 1

A composition including a first color shifting pigment flake population having a first D50 particle size; and a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size, wherein the first color shifting pigment flake population and the second color shifting pigment flake population have a similar face color and color shift is disclosed. An article including the composition is included. A method of making the composition and a method of making the article are also disclosed.

The invention discloses a single-component dealcoholized silica gel for bonding a low-temperature glass ink coating and a preparation method of the single-component dealcoholized silica gel. The invention relates to a single-component dealcoholized silica gel for bonding a low-temperature glass ink coating, which is prepared from the following components in parts by mass: 1000 parts of 107 glue, 50 to 65 parts of cross-linking agent, 1000 to 1500 parts of filler, 60 to 100 parts of pigment, 10 to 15 parts of tackifier and 35 to 45 parts of titanium complex catalyst. Through the prepared tackifier, the application problem that a low-temperature glass ink coating is prone to paint peeling, paint biting and color changing is solved, and the adhesive property of the single-component dealcoholized silica gel to various base materials is improved.

The invention relates to the technical field of medical instruments, and discloses a peripheral circulation function evaluation device, which comprises a control system and a finger fixing seat, and is characterized in that the control system is used for carrying out driving control on a pressure generator and analyzing a shooting result of a camera; the control system can accurately set and evaluate the required pressing pressure value and pressing time, and analyzes the color change of the nail bed before pressing, during pressing and after pressing. The electromagnetic pressure is accurately regulated and controlled, torsion deformation of the spring is restrained by combining a limiting structure, linear pressure output in the vertical direction is achieved, the pressure value is determined according to the quantitative relation between the electromagnet distance and the current, and errors are reduced; a dynamic buffer mechanism forms a progressive loading curve when pressure is applied, so that the instantaneous impact pressure is prevented from exceeding a tolerance threshold value of an assessed person; optical synchronous acquisition is realized, and interference of skin color on blood oxygen saturation calculation is eliminated in a dual-wavelength narrow-band filtering mode.

The invention discloses a preparation method and application of a high-sensitivity temperature-responsive cellulose-based structural color material, and belongs to the field of functional polymer materials. The preparation method comprises the following steps: adding an isopropanol solvent into a certain volume of aqueous solution to obtain an isopropanol dilute solution; hydroxypropyl cellulose is dissolved in an isopropanol dilute solution, a cholesteric liquid crystal structure is formed through self-assembly, a bright structural color is presented, and the hydroxy propyl cellulose structural color material is prepared. A hydroxy propyl cellulose structural color material is uniformly coated on the surface of a polydimethylsiloxane film containing carbon nanotubes, then the transparent polydimethylsiloxane film is used for sealing the hydroxy propyl cellulose structural color material, the temperature sensor with the visual structural color is prepared, and the temperature sensor with the visual structural color is attached to the skin of the human body and can display different colors along with temperature changes. The prepared structural color material is sensitive in response to temperature stimulation, rapid in color change and suitable for human body visual real-time temperature monitoring in the field of intelligent sensing.

The invention discloses a color-changeable and degradable polylactic acid non-slip mat and a production process thereof, and belongs to the technical field of non-slip mat production processes, the non-slip mat adopts a three-layer composite structure: a surface layer contains a temperature-sensitive color-changing material, so that temperature response dynamic color change is realized; the pattern layer is combined with the photochromic component and the embossed structure to generate a multi-angle photoresponse three-dimensional effect; a biodegradation aid is added to the bottom layer, so that the environment friendliness is ensured. The production process comprises the steps of layered low-temperature co-extrusion casting, high-precision synchronous embossing and shaping, dual-band ultraviolet curing coating and continuous slitting and rolling. According to the scheme, the technical bottleneck that a traditional non-slip mat is single in function and mutually exclusive in chemical discoloration degradation is broken through, the product has the dynamic visual effect and the controllable degradation characteristic, meanwhile, the production efficiency is remarkably improved, and the non-slip mat is suitable for household non-slip scenes.

The invention discloses an image resolution monofilament detection system and method, and relates to the technical field of monofilament detection. According to the image resolution monofilament detection system and method, a high-resolution camera is used for collecting a marked area image caused by an identification accessory on a chemical fiber godet wheel in real time, an image processing module is used for carrying out noise removal and color space conversion on the image, and a Canny edge detection algorithm is used for extracting the edge contour of the image. And the color identification module analyzes the color change of the marked area through a contour tracking algorithm, calculates to obtain a broken wire index, and judges whether the marked area is a broken wire area according to a preset threshold value. The broken wire judgment module judges whether the wire guide wheel rotates or not according to the color recognition result so as to judge whether the wire is broken or not, and early warning information is sent out when the wire is broken. The system can accurately monitor the yarn breakage problem in the chemical fiber production process, and has efficient and real-time yarn breakage detection capability.

The invention provides fluorescent carbon dots and fluorescent hydrogel based on solvent stimulation response discoloration and a preparation method and application of the fluorescent carbon dots and the fluorescent hydrogel, and belongs to the technical field of fluorescent materials and information encryption. The preparation method of the fluorescent carbon dots comprises the following steps: mixing a biomass carbon source and a solvent, and performing solvothermal reaction to obtain the fluorescent carbon dots, the biomass carbon source comprises one or more of buxus buxus, oriental cherry leaves, fructus forsythiae leaves and oak leaves; the solvent is ethanol. The biomass carbon dots are low in toxicity, excellent in optical stability and photobleaching resistance and high in ionic strength; the fluorescent carbon dots have double emission peaks of red light and blue light / green light, are different from single fluorescent carbon dots, and can provide more fluorescent information storage density for a fluorescent gel-based information orientation encryption system. The fluorescent color of the fluorescent hydrogel can be stably switched in an ethanol / water solvent, the gel structure is stable, the information storage capacity is improved, and a fluorescent hydrogel-based information anti-counterfeiting encryption system is promoted to develop towards multiple dimensions.

The invention discloses a structured cable with self-cooling and state self-sensing functions, and belongs to the technical field of wires and cables. The cable comprises a conductor, an insulating layer, a functional layer, a sensing layer and an outer sheath from inside to outside. The functional layer is made of an elastic porous material, a spiral cavity is embedded in the functional layer to form a passive heat dissipation channel, and efficient heat dissipation is achieved through the chimney effect. The sensing layer is formed by compounding a transparent polymer base material and thermochromic microcapsules, and when the local temperature of the cable exceeds a safety threshold value, the color changes, so that visual positioning of an overheat fault point is realized. The heat dissipation and state sensing functions are deeply integrated in the cable body structure, external equipment and energy are not needed, the cable has the advantages of being simple in structure, low in cost, safe, reliable and the like, and the problems that a traditional cable depends on an external heat dissipation and monitoring system, so that the structure is complex, cost is high, and operation and maintenance are inconvenient are effectively solved.

A composition, and methods of making and using such a composition, whereby the composition can include a printable ink formulation having a colorant which undergoes a visible color change upon exposure to a wetness threshold. The colorant can be highly resistant to leaching. Additionally, the colorant can be resistant to premature activation via ambient moisture or humidity.

The invention relates to the technical field of functional composite color-changing materials, in particular to a dynamic color-changing flexible composite material and a preparation method and application thereof. The flexible composite material is prepared from the following raw materials: photochromic powder, a flexible film matrix, low-viscosity silicone oil and a curing agent, the chemical general formula of the photochromic powder is (Li < 0.1 > Na < 0.4 > Bi < 0.5 >) < 0.95-x > Bi < 2 > Pr < x > Y < 0.05 > Nb < 2 > O < 9 >, wherein x ranges from 0.001 to 0.05. According to the flexible composite material provided by the invention, inorganic photochromic powder doped with rare earth elements is introduced into a PDMS / low-viscosity silicone oil elastomer matrix, and the composite ratio of the photochromic powder to the flexible film matrix and the doping content of rare earth ions praseodymium in the photochromic powder are regulated and controlled; the real-time, accurate and reversible regulation and control of the optical characteristic color of the material are realized by virtue of photostimulation, and a brand new thought is provided for preparing an optical stealth material.

The invention relates to the technical field of packaging bag sealing detection, in particular to a sealing detection device and method for packaging bag sampling inspection based on automatic sealing, and the device comprises a detection table and a housing disposed on the detection table, and also comprises an electric mechanism which is disposed in the housing and is used for clamping and pulling the bottom edge of a packaging bag to be inspected, an expanding and supporting mechanism capable of opening the bag opening of the packaging bag is further arranged in the shell, and after the bag opening is opened, the expanding and supporting mechanism can promote the second guide pipe in the shell to move to the position above the bag opening, and water is added into the packaging bag; based on a chemical test paper reaction, a detection result can be rapidly and visually obtained through color change on the moisture detection test paper, a leakage point can be accurately determined through an area with color change on the moisture detection test paper, the sealing condition can be rapidly judged through simple operations of water filling, sealing, test paper insertion and extrusion, and moreover, the detection result can be rapidly and visually detected. Tiny leakage can be sensitively detected through the color change of the moisture detection test paper.