196 results about "Diffuse reflection" patented technology

The application relates to the technical field of image processing, and provides a model material replacement method and device for a design drawing. The method comprises the following steps: determining a target model from each model of a design drawing according to a received material selection instruction; obtaining a target material map corresponding to the material selection instruction from each material map of the target model; and merging the target material map, a light map, a diffuse reflection map and a reflection refraction map of the design drawing to obtain a model image of the target model in the design drawing; wherein the design drawing is an image obtained through rendering; the light map, the diffuse reflection map and the reflection refraction map are each layer obtained after the design drawing is rendered. The model material replacement method for the design drawing provided by the application can reduce the calculation amount of the model in the design drawing when the material is replaced, and reduce the resources consumed when the model material is replaced.

This invention discloses a detection method, system, and medium based on line spectral confocalization. The method includes: determining the number of peaks; if the number of peaks is one, adjusting the light intensity value corresponding to the peak wavelength to be within the light intensity working range; if the number of peaks is not less than two, extracting the light intensity value corresponding to the peak wavelength, analyzing the peak morphology, and identifying the peak wavelength associated with each reflection region; analyzing the offset of the height of the specular reflection region, correcting the detection height of the specular reflection region to obtain the height difference between the reflection regions covered within the width of the line spot at any position on the scanning line; and adjusting the distance of the sensor relative to the surface of the object under test according to the height difference, so that there is one and only one valid peak in the spectral image at any position on the scanning line. This invention can accurately calculate the height difference between the specular reflection region and the diffuse reflection region covered within the width of the line spot, improving the signal-to-noise ratio of the spectral image and expanding the application scenarios.

The application discloses an auxiliary device for field tobacco leaf image collection and measurement, which comprises a bottom plate composed of a folding frame and a bottom cloth, the bottom cloth is covered on the folding frame, and a scale line is arranged on the edge of the bottom cloth; side plates comprising left and right side plates, the left and right side plates are covered with side cloth, the bottom edges of the left and right side plates are detachably connected with the folding frame, and the top and bottom of the left and right side plates near the lower edge of the bottom cloth are respectively provided with fixing rings; a fixing belt assembly comprising a neck fixing belt and a waist fixing belt, the two ends of the neck fixing belt are connected with the fixing rings on the top of the left and right side plates, and the two ends of the waist fixing belt are connected with the fixing rings on the bottom of the left and right side plates. The application does not need the cooperation of others, and the field work efficiency is improved; the light gray diffuse reflection bottom cloth and the side cloth can isolate stray light and background sundries, and the image recognition precision is improved; the scale design realizes real-time measurement of leaf size, and simplifies the data collection process; and the folding structure and the fixing belt winding design are convenient for carrying.

TITLE: Calibration Target for Optical Sensor This disclosure relates to a calibration target (1) comprising a face (10) having a first zone (11) and a second zone (12), the first zone (11) being defined by a pattern configured to be detectable by a camera (2), the first zone having a reflectivity factor of at least 94% for which at least 90% of the reflection is diffuse, the second zone having an emissivity factor of at least 50% for an emission wavelength range between 2 and 12 µm. Figure 1

The application discloses a multi-view human body reconstruction method based on photometric consistency matching and optimization algorithm, which comprises the following steps: firstly, obtaining a rough human body surface through a visual hull algorithm according to a human body mask image; secondly, using photometric consistency constraint to optimize the shape initialized from the visual hull, so as to obtain a dense human body surface model; thirdly, calculating an illumination coefficient by using the diffuse reflection principle; and finally, using a light and shade optimization algorithm to perform high-speed real-time rendering on the dense human body surface model, so as to obtain a final simulation human body model. The application can optimize the initialized rough surface by using the contrast of the gray scale image, maintaining the photometric consistency constraint and the differentiable rendering, and can effectively solve the problems of the unsmooth surface, the unobvious geometric details and the color estimation by using the diffuse reflection principle to estimate the diffuse reflectivity and the illumination. The application can optimize the human body surface by the difference of the light and shade and the color in the image.

A display panel and electronic paper, the display panel comprising a first substrate and a second substrate oppositely and spacedly arranged in a first direction; an electro-deformation layer arranged on the first substrate, the electro-deformation layer being used to deform when powered to change the curvature of the light-out surface of the electro-deformation layer; a reflective layer arranged on the surface of the electro-deformation layer away from the first substrate, and used to synchronously deform with the electro-deformation layer, the reflective layer also being used to be powered to switch between diffuse reflection and specular reflection; wherein, when the electro-deformation layer is concave towards the direction away from the second substrate, and the reflective layer is specular reflection, the display panel is in a privacy mode; when the electro-deformation layer does not deform, the display panel is in a non-privacy mode. The display panel of the present application can realize reversible switching between the privacy mode and the non-privacy mode, while taking into account low power consumption and high display performance, meeting the privacy protection and reading use requirements in different scenarios.

The utility model discloses a kind of diffuse reflection lamps and lanterns of preventing wire interference, including lamp shell, diffuse reflection cover, and the aluminum substrate with lamp pearl, diffuse reflection cover is set in lamp shell, at least one side of lamp shell bottom is equipped with aluminum substrate, further include wire, power supply, two baffle and two end cap, two baffle is used to cover in diffuse reflection cover both ends, two end cap is used to cover in lamp shell both ends, the bottom both sides of baffle are equipped with threading hole respectively, the both sides of baffle outer side are equipped with wire channel respectively, the end of aluminum substrate extends into threading hole, one end of wire is connected with the end of aluminum substrate, the other end is sequentially connected with power supply after passing through threading hole and wire channel. Its advantage is that one end of wire is connected with the end of aluminum substrate, the other end is sequentially connected with power supply after passing through threading hole and wire channel, baffle keeps wire outside diffuse reflection cover, wire is not in diffuse reflection cover, shadow cannot be generated in diffuse reflection cover, prevent wire from the interference of light, so that illumination effect is better.

This invention discloses an online method and system for identifying coal powder fineness by fusing multi-source images and operating parameters, belonging to the fields of thermal power generation detection and artificial intelligence technology. The method includes: simultaneously acquiring backlight transmission and annular diffuse reflection images of the same coal powder particle group within a detection chamber using an air curtain isolation and mechanical cleaning self-cleaning mechanism; extracting morphological features and surface texture features of the particle group using a dual-branch deep neural network; generating a fused feature tensor by combining the above features with the coal mill operating parameters through a gated fusion network, and then outputting real-time fineness values ​​and early warnings through a regression prediction and early warning network; when update conditions are triggered, incremental fine-tuning of the fusion and regression prediction and early warning networks is performed on an edge computing device, and a containerized grayscale strategy is used to achieve hot service updates. This invention enables long-term, maintenance-free, high-precision, and adaptive online monitoring under high dust conditions.

The embodiment of the application provides a kind of based on integrating sphere light source's photosensitive diode multispectral calibration device and method, for by dark current measurement, photocurrent correction and wavelength response fitting, photosensitive diode array is carried out wide band multispectral calibration.The device of the application includes integrating sphere device, multi-band adjustable light source module, the photosensitive diode array to be calibrated and control and analysis unit;The inner wall of integrating sphere device is high reflectivity diffuse reflection material;Integrating sphere device further includes trap detector, and trap detector is used for real-time monitoring the reflection loss of the inner wall of integrating sphere device;Trap detector is connected with control and analysis unit communication;Multi-band adjustable light source module is accessed integrating sphere device;The photosensitive diode array to be calibrated is composed of multiple photosensitive diodes;Control and analysis unit and multi-band adjustable light source module, the photosensitive diode array to be calibrated establish communication connection.

The utility model relates to a high -speed double light source automatic focusing laser engraving machine, include: cabin, the cabin has the installation cavity in, red blue light integral laser ware, the configuration in the cabin, high accuracy diffuse reflection module, the configuration in the cabin and detect work piece height downward, galvanometer, the configuration in the cabin, and with red blue light integral laser ware butt joint, field mirror, connect in the below of galvanometer, and emit laser beam downward, red dot laser ware, the configuration in the cabin, and emit focusing light beam downward, automatic focusing lifting assembly is connected with the cabin, drives the cabin and carries out the lift to carry out focusing, engraving platform, the configuration below the cabin.

Flexible diffuse-reflective smart camber (FDRSC) devices are disclosed herein. The devices include UV-C lights sources and an irradiance chamber. The irradiance chamber is open on at least one end through which the plants to be treated are exposed to the UV-C irradiance. Further, the inner surfaces of the irradiance chamber are covered by or consist of a diffuse reflective material that passively intensifies and uniformly distributes the UV-C irradiance to penetrate plant canopies. Also described herein are autonomous vehicles for moving the FDRSC devices across fields of crops and other plants, which is controlled in real time by a dosing control system. Also described herein are methods of in-situ UV-C treatment of plants using the FDRSC devices.

A cable and a data cable. The cable comprises: a light-emitting adhesive layer, wherein a first placement area and a second placement area which are opposite to each other are formed on the light-emitting adhesive layer; a plurality of transmission lines arranged within the first placement area; an insulating seat having a first end surface and a second end surface which are opposite to each other, wherein the first end surface faces the transmission lines, and the insulating seat is arranged within the second placement area; and a plurality of light-emitting components arranged on the second end surface along the direction of extension of the cable, wherein light is emitted through the light-emitting adhesive layer and, after diffuse reflection by the transmission lines, is emitted from the second end surface.

The application discloses an anti-aging overhead insulated cable and relates to the technical field of cables.The cable comprises a core assembly coated with cross-linked polyethylene; further comprises an inner sheath, an armor layer and an outer sheath which are sequentially wrapped around the plurality of core assemblies from inside to outside; a plurality of concave units one are connected through connecting grooves and are arranged on the surface of the outer sheath to break the continuous water film tension on the surface of the outer sheath and increase the diffuse reflection area of ultraviolet rays; concave units two are arranged on the armor layer, and the concave units two store water-blocking medium which expands when meeting water; the anti-aging protection system is constructed from outside to inside, and the various structures are synergistically combined, so that the performance of the cable is improved in terms of ultraviolet resistance, water resistance and spread prevention and efficient heat dissipation, the bottleneck of only relying on material improvement in the prior art is broken, and the anti-aging performance of the overhead cable in a complex outdoor environment is remarkably improved.

This invention discloses a method for preparing and applying a high-efficiency fixed-wavelength reflective film for silicon-based power generation in the field of photovoltaic power generation enhancement materials. The method involves mixing and extruding a functional masterbatch made from cerium-yttrium modified magnesium fluoride-coated barium sulfate microspheres, cerium-zirconium modified rutile titanium-silicon composite microspheres, rutile titanium dioxide, precipitated barium sulfate, hollow glass microspheres, light calcium carbonate, maleic anhydride-grafted polyethylene, and high-density polyethylene resin. This masterbatch is then co-extruded and blow-molded with low-density polyethylene, ethylene-octene copolymer, silicone masterbatch, polytetrafluoroethylene, antioxidants, UV absorbers, light stabilizers, calcined kaolin, and oxidized polyethylene wax to form a film. The film is then embossed, corona-treated, and wound to obtain the final product. This reflective film exhibits high diffuse reflectance, weather resistance, wear resistance, and anti-aging properties, and can be used in medium to large-scale photovoltaic power plants to improve the power generation efficiency of silicon-based photovoltaic modules.

This application relates to the field of basketball sports technology, and discloses a basketball shooting scoring system and an infrared sensing specular diffuse reflection detection method. The system includes: an infrared emitting module for emitting infrared signals; an infrared receiving module for receiving reflected infrared signals; a specular reflection structure module for reflecting the infrared beam at a preset angle; a data acquisition module for acquiring the state of the reflected light signal; a trajectory analysis module for generating spectral data; and a scoring output module for displaying the shooting score in real time. The method includes: infrared signal emission; infrared signal reception and disturbance data generation; signal reflection and interference region formation; path disturbance matrix generation; trajectory analysis and feature extraction; trajectory determination and scoring feedback; and data recording and result output. This invention adopts a design combining an infrared emitting module and an infrared receiving module, which can accurately construct an infrared light path and capture the trajectory of a basketball shot.

Provided are a panel member having good aesthetic properties and good visual recognition of characters, figures, symbols, and the like, and an electronic musical instrument having the panel member. An operation panel has a base layer (341) including a transmission portion (341a) that transmits visible light and is shaped like an identification (I), and a base portion (341b) that surrounds the transmission portion (341a) and has a lower transmittance of visible light than the transmission portion (341a); a first color-developing layer (342) that is positioned at a higher layer than the base layer (341), is formed of a certain color, and transmits at least a portion of visible light; a diffuse reflection layer (343) that is positioned at a higher layer than the first color-developing layer (342) and diffusely reflects at least a portion of visible light; and a second color-developing layer (344) that is positioned at a higher layer than the diffuse reflection layer (343) or inside the diffuse reflection layer (343) and is formed inside the shape of the identification (I) of the transmission portion (341a) when viewed from above.

This utility model discloses a container rotation device for drinking water bottling, belonging to the field of drinking water production technology. The container rotation device includes a frame and a filling machine mounted on the frame. A conveyor belt is fixedly connected to the frame. It also includes a rotating platform rotatably connected to the middle of the frame, with a disc fixedly connected to the rotating platform via a vertical frame. The rotating platform has an arc-shaped notch for adapting to the middle of the container, and a limiting plate for limiting the container's position is fixedly installed on the disc. This utility model, through the design of the arc-shaped notch and the arc-shaped notch, combined with a diffuse reflection photoelectric sensor, achieves zero offset and zero shaking of the container during rotation, solving the problems of easy tilting and inaccurate positioning of containers in traditional rotation methods. Furthermore, the drive motor allows for uniform and controllable speed of the rotating platform and disc, improving rotation efficiency.

The present application belongs to the technical field of equipment calibration, and particularly relates to an infrared radiation measuring equipment calibration device and method with a diffusing reflector lens cover integrated. The infrared radiation measuring equipment comprises a telescope lens barrel, and the calibration device comprises a cylinder, a lens cover and a diffusing reflector. The cylinder is sleeved on the outer edge of the front end of the telescope lens barrel, the lens cover covers the aperture of the cylinder, and the diffusing reflector is attached to the inner side of the lens cover and is synchronously turned with the lens cover. The calibration device is small in size, simple in operation, high in measurement accuracy, and beneficial to field use. The calibration method using the device has a large dynamic range, a fast calibration speed, and can effectively improve the work efficiency.

This invention discloses a rapid near-infrared analysis method for coal quality based on constrained learning and Adaptive Deep Belief Network (ADBN). First, a near-infrared spectrometer is used to acquire diffuse reflectance spectra of coal samples. Each sample is acquired 3-5 times and averaged to reduce random errors, and the true values ​​of corresponding coal quality parameters are determined. Next, the spectral data is preprocessed to eliminate noise, baseline drift, and scattering interference. A constrained learning algorithm is used to select feature bands strongly correlated with coal composition, constructing constrained spectral feature vectors. An Adaptive Deep Belief Network (ADBN) is then constructed. The spectral feature vectors are input into the model, incorporating physical constraints on coal quality parameters, spectral feature correlation constraints, and regularization constraints into the loss function. Finally, the trained model is used to predict the spectral composition of unknown coal samples, obtaining the coal composition content. This method effectively removes redundant bands and noise, solving the redundancy problem of traditional feature selection. ADBN can dynamically adjust the network structure to adapt to the inherent laws of coal quality, improving prediction accuracy and reliability.

The utility model belongs to LED lamp area technical field especially relates to anti -dazzle LED lamp area, including LED lamp board, silica gel sleeve and silica gel diffusion strip, the silica gel diffusion strip is integrally formed in the hollow groove body through the extrusion technology, the bottom wall of bottom with the hollow groove body leaves the assembly groove body who installs the LED lamp board, the top integrally formed has the silica gel piece body who is adapted with the opening of the hollow groove body, the silica gel piece body array has a number of light holes. Through silica gel diffusion strip realizes diffuse reflection, to improve the uniformity of light, utilize the hole wall of a plurality of light holes on silica gel piece body's shielding stray light, reduce the exit angle of light to reach the effect of anti -dazzle, on the other hand, silica gel piece body is fixed in the top of silica gel diffusion strip through integral forming, increase the fixed area of silica gel piece body and lamp area to improve the stability of silica gel piece body installation, in the use scene of bending modeling, cutting length, be favorable to reduce the situation that silica gel piece body occurs warping, falls off.

The application belongs to the technical field of material preparation, and particularly relates to a light-heat material with an antireflection coating and a preparation method thereof. Micron or nanometer magnetic particles are used as the core, and inorganic materials with antireflection function are used as the functional coating to coat the surface of the magnetic particles; wherein the functional coating is metal oxide or non-metal oxide with light reflection inhibiting function. The method is simple in operation, mild in reaction condition, and the prepared material has an antireflection coating, which can reduce the energy loss in the form of diffuse reflection on the surface of the material in the light-heat conversion process, and shows high energy conversion efficiency. In addition, the coating material is stable in chemical property, so that the prepared composite particles have certain oxidation resistance, and can be widely applied in the fields of paint and water treatment chemical industry.

The present application relates to the technical field of laser optical control, and particularly relates to an electromagnetic mechanical shutter device, a light blocking piece of the device can reciprocate along a straight line, so that the light blocking piece is switched between a light beam passing position and a light beam blocking position, thereby realizing flexible control of the on-off of a laser beam. Meanwhile, by setting a diffuse reflection heat dissipation unit and setting a reflecting surface on the light blocking piece, when the light blocking piece is in the light beam blocking position, the incident laser beam can be reflected to the diffuse reflection heat dissipation unit, the laser energy is received and absorbed by the diffuse reflection heat dissipation unit, and the heat is dissipated in time, so that the problem of heat accumulation is effectively relieved, and the service life of the device is significantly prolonged. The present application also relates to a high-power laser, which comprises the electromagnetic mechanical shutter device.

This invention discloses a single-snapshot spatial frequency domain imaging and morphology correction method, system, and device, comprising: acquiring a set of monochromatic fringe images with different center wavelengths based on the same projected image; simultaneously inputting each monochromatic fringe image in the set into two parallel and independent deep learning networks, wherein the first deep learning network is used to extract the DC and AC components of the image; the second deep learning network is used to extract the wrapping phase component and fringe hierarchy information of the image, and perform absolute phase calculation to obtain the three-dimensional morphology before correction; performing height correction on the three-dimensional morphology and calculating the corrected diffuse reflectance image; performing background segmentation on the corrected diffuse reflectance image and spatially aligning it to the same coordinate system; and retrieving the optical characteristic parameters and physiological parameters of the tissue based on the spatially registered multi-wavelength diffuse reflectance data. This invention ultimately achieves real-time, wide-field, high-precision, and highly robust quantitative imaging of tissue physiological parameters.

The application provides a long-distance target polarization three-dimensional imaging correction method based on edge constraint, and belongs to the technical field of polarization imaging. The method comprises rotating a polarizer in front of a camera, and calculating Stokes vectors and initial polarization parameters of M polarized sub-images. Edge detection is performed on diffuse reflection component images of the M polarized sub-images to generate an edge region. Edge difference parameters are calculated according to the edge region, and the initial polarization parameters are globally corrected. The application combines edge detection and adaptive compensation to realize global correction of polarization information, effectively suppresses polarization information degradation and interpretation deviation caused by atmospheric scattering and stray light in a long-distance imaging environment. Edge hard constraints are introduced in the normal domain, and an energy minimization algorithm is combined for optimization to construct a unit normal field solving framework with spatial continuity, solve the error accumulation and geometric distortion problems in traditional polarization integral reconstruction, and improve the stability and precision of three-dimensional reconstruction results.

The invention discloses a double-beam synchronous following anti-reflection device for laser forging printing, which is characterized in that the specific wavelength combination of 1064nm powder bed cladding laser and 532nm green ultrafast strengthening laser is adopted to impact a fusion layer, and a special reflecting coating with the wavelength of 532nm is coated on a scanning galvanometer mechanism; therefore, the coating can selectively transmit laser of 1064nm and efficiently reflect laser of 532nm at the same time by utilizing the obvious wavelength difference between the two; on the basis, diffuse reflection of green ultrafast laser can be selectively isolated, so that damage to the laser caused by return light is fundamentally avoided, stable work of equipment in a long-time and high-power following mode is ensured, and therefore, the device is very suitable for large-scale application and popularization in the technical field of laser forging printing.

This invention provides a multi-directional synchronous measurement system and method based on laser shear speckle interferometry, relating to the field of shear speckle interferometry technology. The system includes a laser, a beam splitter, and an imaging device. The laser beam generated by the laser illuminates the object under test, forming diffuse reflection light. Part of the diffuse reflection light passes sequentially through an imaging objective lens and a Fourier lens, then illuminates the beam splitter, which separates it into transmitted and reflected light. Part of the reflected light is reflected by a mirror and then sequentially passes through an aperture stop, the beam splitter, and a Fourier lens. By separating the mirrors (mirror 1, 2, and 3), aperture stops 1, 2, and 3) into independent modules for individual adjustment, the laser shear speckle technology achieves separation of shearing amount and aperture stop adjustment, thereby ensuring measurement effectiveness. Based on this, combined with a pulsed laser and a gated imaging device, transient or dynamic measurements are achieved, improving measurement accuracy.

The application relates to the technical field of glass laser cutting, in particular to a positioning clamp and method for lens glass laser cutting. The inner side of a water container is slidably connected with an outer sliding frame. The outer side of the outer sliding frame is fixedly connected with a sealing ring. The sealing ring is slidably connected with the water container and realizes sealing. The inner side of the outer sliding frame is provided with window glass. The water container, the outer sliding frame and the window glass form a water chamber. The inner side of the water container is fixedly connected with a support seat. The inner side of the water container is fixedly connected with a first spacing plate. The side of the window glass, which faces the inner side of the water container, is fixedly connected with a second spacing plate. The application can not only fill water with a fixed thickness in the frosted glass to reduce the diffuse reflection and refraction of laser, but also can keep the free liquid surface in the water chamber away from the cutting surface of the frosted glass, that is, the frosted glass is completely immersed in water, so that the free liquid surface is kept away from the cutting process, and the water ripple generated by the free liquid surface does not affect the laser cutting of the frosted glass.

This invention relates to a low-noise optical module three-temperature testing device, comprising a test box with a test cavity formed inside. An air inlet pipe is connected to the test box and communicates with the test cavity. A first silencing cavity is also formed inside the test box, and a first exhaust channel communicating with the first silencing cavity is provided on the test box. A duct is also connected to the test box, connecting the test cavity and the first silencing cavity. By setting up the first silencing cavity and connecting it to the test cavity via the duct, this invention not only extends the gas flow path within the test box and serves to store airflow, but also significantly increases the gas flow area and the diffuse reflection area and number of reflections within the test box, thereby reducing gas velocity and noise energy, achieving noise reduction. The test cavity-duct-first silencing cavity can form a Venturi effect, resulting in better noise reduction.

The application provides a non-dispersive infrared gas sensing system and a manufacturing method thereof. The system comprises an infrared light source, an infrared detector and a reflective gas chamber. The reflective gas chamber comprises a plurality of planar sidewall components which are spliced with each other through a mortise and tenon structure to form a polyhedral reflective cavity structure; the infrared light source and the infrared detector are arranged on the same planar sidewall component, and another planar sidewall component is provided with a gas inlet and a gas outlet, the gas inlet is used for the target gas to enter the reflective gas chamber, and the gas outlet is used for the target gas to leave the reflective gas chamber. The inner surfaces of the planar sidewall components are all coated with a high reflection film, the incident light emitted by the infrared light source is subjected to multiple diffuse reflection and mirror reflection inside the reflective gas chamber to form a cavity light field, and the cavity light field is received by the infrared detector after being absorbed by the gas. The gas chamber is spliced through a modular mortise and tenon structure, the split processing and film coating of the sidewalls are realized, and the film coating dead angle and shadow effect are eliminated.

This invention relates to the field of solar photovoltaic power generation technology and discloses an adaptive angle adjustment method for solar cell modules, comprising the following steps: acquiring average wind speed and original pitch angle signals; performing frequency domain decoupling on the original pitch angle signals; calculating the high-frequency energy integral, low-frequency energy integral, and energy ratio parameter; calculating the actual diffuse reflectance by combining the average wind speed and the high-frequency energy integral; constructing a theoretical radiation model to obtain the optimal target tilt angle; extracting the radiation sensitivity gradient; calculating the tracking error between the actual tilt angle and the optimal target tilt angle; determining the actual dead zone by combining the energy ratio parameter and the radiation sensitivity gradient; and outputting control commands or drive commands based on the relationship between the absolute value of the error, the actual dead zone, and the high and low frequency energy integrals. This invention reduces mechanical wear by dynamically filtering out high-frequency wave disturbances through a dead zone and precisely optimizes the reflectance using high-frequency energy correction to improve power generation, achieving a balance between mechanical loss reduction and power generation benefits.