1389 results about "Orthographic projection" patented technology

The invention relates to the technical field of projectors, in particular to an intelligent picture geometric distortion control method based on machine vision and an image projector, and the method comprises the steps: obtaining image data of a to-be-corrected projection picture, and carrying out the feature analysis of the image data, so as to obtain a distortion feature value; matching a correction optimization model corresponding to the distortion characteristic value, so as to call a correction parameter from a preset correction parameter library through the correction optimization model; simulating a correction process corresponding to the projection picture to be corrected according to the correction parameter; the correction parameters are adjusted according to the correction process, and the projection picture to be corrected is corrected according to the adjusted correction parameters, the corresponding correction optimization model is matched based on the characteristic values, the adaptive correction parameters can be dynamically called from the preset parameter library, the limitation of a traditional fixed algorithm is changed, and the correction efficiency is improved. The correction strategy is highly coupled with the actual distortion scene, and the correction efficiency and pertinence are remarkably improved.

The three-axis Hall magnetic sensing chip comprises a magnet gathering body, a first Hall element group and a second Hall element group, the first Hall element group and the second Hall element group are arranged in a plane at intervals, the magnet gathering body is arranged on Hall elements, and the orthographic projection of the magnet gathering body on a Hall plane has a first direction symmetry axis and a second direction symmetry axis which are orthogonal. The first Hall element group comprises two first Hall elements which are connected in a contrast difference mode, wherein the magnetic induction centers of the two first Hall elements are located on a first-direction symmetric axis and are symmetrically arranged relative to a second-direction symmetric axis. The second Hall element group comprises two second Hall elements which are located on the same side of the first direction symmetry axis and are symmetrically arranged relative to the second direction symmetry axis, and the magnetic induction centers of the two second Hall elements are perpendicular to the connecting line between the orthogonal intersection points of the first direction symmetry axis and the second direction symmetry axis; the magnetism gathering body is located on one side of the connecting line of the two magnetic induction centers. According to the invention, a high inter-axis signal rejection ratio is realized, and the Z-axis signal can be directly output.

The present application provides a communication terminal. The communication terminal comprises a radio frequency chip, a first main radiator, a second main radiator, and a feed structure. The first main radiator, the second main radiator, and the feed structure are pairwise parallel and spaced apart, and the orthographic projection of the first main radiator on a first plane and the orthographic projection of the second main radiator on the first plane at least partially overlap, so that the first main radiator and the second main radiator form an antenna of a parallel structure. The first plane is perpendicular to the arrangement direction of the first main radiator and the second main radiator. The feed structure is used for coupling and feeding the first main radiator and the second main radiator separately. The feed structure simultaneously feeds the first main radiator and the second main radiator, thereby improving the radiation efficiency of the first main radiator and the second main radiator in the antenna system, enhancing the communication effect of the antenna system, and improving the communication capability of the communication terminal.

Provided are a wiring substrate and a preparation method therefor, and a display apparatus. The wiring substrate comprises a base substrate, which comprises at least one bonding region and bending regions. The wiring substrate further comprises: a plurality of metal wiring layers, which are located above the base substrate; and a plurality of dielectric layers, wherein one dielectric layer is correspondingly arranged on the side of each of the plurality of metal wiring layers that is away from the base substrate, and each dielectric layer comprises an organic dielectric layer and an inorganic dielectric layer that are stacked, the orthographic projection of the organic dielectric layer on the base substrate not overlapping with the orthographic projection of the bonding region on the base substrate, and the orthographic projection of the inorganic dielectric layer on the base substrate at least partially overlapping with the orthographic projection of the bonding region on the base substrate.

The invention relates to a surface-enhanced Raman scattering detection substrate, a preparation method thereof and a Raman scattering detection method. The surface-enhanced Raman scattering detection substrate comprises a silicon substrate, wherein at least one surface of the silicon substrate is provided with a functional area; the plurality of silicon nanorods are positioned in the functional region; the silicon nanorod comprises a main body part and a head part, the main body part is located between the head part and the silicon substrate, and the main body part is connected with the head part and the silicon substrate; the radial width of the head part is gradually reduced in the direction perpendicular to and away from the surface of the silicon substrate; the total area of orthographic projections of the silicon nanorods on the silicon substrate accounts for 1%-10% of the area of the functional area. According to the surface-enhanced Raman scattering detection substrate, enrichment of molecules to be detected in a three-dimensional space can be achieved, the signal enhancement capacity is high, and the detection sensitivity of target molecules can be remarkably improved.

The invention relates to the technical field of intelligent control technology and edge computing application, in particular to an actuator real-time control method and system based on edge computing, and the method comprises the steps: carrying out the multi-mode state sensing and real-time preprocessing of an actuator at an edge node, mapping a high-dimensional feature to a low-dimensional evolution space through space-time compression projection, and carrying out the multi-mode state sensing and real-time preprocessing of the actuator; constructing a lightweight prediction model in combination with a linear skeleton and nonlinear residual reasoning, and dynamically generating a confidence interval to quantify uncertainty; further introducing an evolution updating mechanism based on a residual error, correcting a projection matrix, a dynamic operator and an inverse mapping matrix on line, and ensuring that the real states of the model and the actuator are consistent for a long time; and finally, based on the prediction result and the risk perception capability, adaptively generating an optimal control signal within the security constraint. According to the invention, high-precision, low-delay and robust edge real-time control is realized, and the robustness and adaptability of the system under complex working conditions are improved.

According to the online path planning method and system for the automatic polishing robot, the one-to-one mapping relation between the plane and the curved surface is established through orthographic projection, the complex curved surface is locally segmented into the simple curved surface, the algorithm time complexity of searching the coordinates of the path points on the surface of the model is reduced, the running speed is increased, and the real-time path planning requirement is met; according to the method, path planning can be directly carried out on point cloud data, the requirements for reconstruction algorithm precision and model quality are low, three-dimensional path planning can be converted into two-dimensional plane path planning, a two-dimensional path in any shape can be generated, and automatic and efficient online path planning of a robot is ensured.

The invention provides a graphite head regular hexagon blank manufacturing method which comprises the following steps: taking a rectangular carbon brick, and establishing a rectangular coordinate reference system by taking an orthographic projection rectangle of the rectangular carbon brick as a reference and an original point of a point position where a first side is intersected with a second side; obtaining the length of the first side and the length of the second side of the rectangular carbon brick; the preset single bodies are regular hexagonal prisms, are arranged on a first side in a shoulder insertion manner and are arranged in a side-sharing side-by-side manner in the direction of a second side; the cutting line carries out displacement cutting in the first side direction and the side length direction of a preset regular hexagon; according to the scheme, the cutting line walks in the linear direction of the side length of the regular hexagon, three sides of each regular hexagon can be obtained through cutting after each cutter is completed, although each regular hexagon needs to be machined through two cutters, four regular hexagons can be machined through each cutter except for the first cutter, the machining efficiency is high, and the machining cost is low. And the average monomer processing time is short.

This application discloses a display panel and a display device. In a specific embodiment, the display panel includes a substrate and a plurality of pixels arranged in an array on the substrate. The pixels include a light-emitting region and a transparent region. The light-emitting region includes a driving circuit layer, a planarization layer, a first electrode, a light-emitting layer, and a second electrode, which are sequentially disposed on the substrate. An edge portion of the planarization layer close to the transparent region has a first overlapping area with the first electrode in their orthographic projections on the substrate. The light-emitting region further includes a protrusion portion, whose thickness is less than that of the planarization layer. The protrusion portion is closer to the substrate than the planarization layer and covers the first overlapping area in its orthographic projection on the substrate.

A display panel and a manufacturing method therefor, and a display device. A display panel (20) comprises: a substrate (21), a light-transmitting substrate (22), an electrophoretic liquid layer (23), a plurality of light converging and reflecting structures (24), and a plurality of corresponding scattering structures (25). The light converging and reflecting structures (24) reflect and converge light incident into the display panel (20), and direct the reflected light to the corresponding scattering structures (25), such that the reflected light passes through the scattering structures (25) and emerges from the display panel (20); and the scattering structures (25) can expand the irradiation area of the emergent light and improve the visual uniformity of the emergent light, thereby improving the display effect of the display panel (20). Moreover, the area of the orthographic projections of the scattering structures (25) on the substrate (21) is smaller than the area of the orthographic projections of the light converging and reflecting structures (24) on the substrate (21), such that at least part of the light incident to the light converging and reflecting structures (24) does not need to pass through the scattering structures (25), thereby reducing the loss of light, improving the reflection efficiency of the display panel (20), and improving the display effect of the display panel (20).

The invention discloses a display panel and a display device, the display panel comprises a central area and an edge area located on at least one side of the central area along a peep-proof direction, and the display panel further comprises a substrate, a plurality of pixel units, a shading layer and a reflection function layer. The plurality of pixel units are arranged on one side of the substrate in an array, and each pixel unit comprises a first sub-pixel and a second sub-pixel; the shading layer comprises shading parts arranged at intervals and light-transmitting openings formed between the adjacent shading parts, and orthographic projections of the light-transmitting openings are at least partially overlapped with the second sub-pixels; the reflection function layer comprises a reflection interface formed by surrounding at least the second sub-pixels, and the reflection interface is enclosed to form a reflection structure. The width size of the reflecting structure or the light-transmitting opening in the edge area is larger than the corresponding width size of the central area. According to the display panel, the widths of the light-transmitting openings or the widths of the reflection structures of the central area and the edge area are set in a differentiated mode, brightness attenuation of the edge area under a large visual angle is compensated, and therefore the overall CSF value and the display uniformity of the display panel are improved.

The embodiment of the invention provides a display panel and a display device. According to the display panel, the orthographic projection of a low-potential power line is overlapped with the orthographic projection of a gate drive circuit in at least one of a first corner region and a second corner region, so that the width of the low-potential power line can be increased by utilizing the space of the gate drive circuit located in the first corner region and / or the second corner region; the impedance of the low-potential power line is reduced, and the influence of some parallel lines of the lines in the grid driving circuit in the area on the voltage drop is low, so that the voltage drop of the low-potential power line is reduced, and meanwhile, frames of the first corner area and the second corner area are prevented from being enlarged; the effects of reducing the frame of the arc-shaped area and reducing the voltage drop of the low-potential power line are both considered.

The invention provides a display panel, a display device and a driving method of the display panel, a plurality of sub-pixels comprise first type sub-pixels and second type sub-pixels, the plurality of first type sub-pixels comprise first sub-pixels, second sub-pixels and third sub-pixels which are different in color, and the first type sub-pixels comprise first sub-pixels, second sub-pixels and third sub-pixels which are different in color. The plurality of second-type sub-pixels comprise fourth sub-pixels and fifth sub-pixels, and the orthographic projection of the first shading part on the substrate is located on the peripheral side of the orthographic projection of the second-type sub-pixels on the substrate. The first pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel, and the second pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fifth sub-pixel. Wherein in at least one of the first direction and the second direction, a second pixel unit is arranged between the two first pixel units, a first pixel unit is arranged between the two second pixel units, and the first direction and the second direction intersect and are both parallel to the plane where the substrate is located.

Provided in the present disclosure are a display substrate and a display apparatus. The display substrate comprises a base, anti-peep sub-pixels, a first light-shielding layer and a second light-shielding layer, wherein the anti-peep sub-pixels are located on one side of the base; the first light-shielding layer is located on the side of the anti-peep sub-pixels facing away from the base; the first light-shielding layer is provided with a plurality of first openings corresponding to each anti-peep sub-pixel; the second light-shielding layer is located on the side of the first light-shielding layer facing away from the anti-peep sub-pixels; the second light-shielding layer comprises first light-shielding structures, and the orthographic projection of each first light-shielding structure on the base is located between the orthographic projections, on the base, of first openings adjacent thereto; and the second light-shielding layer is made of a metal material. An improvement in both the anti-peep effect and display effect is facilitated.

The invention relates to a miniature light-emitting device and a manufacturing method thereof, and the device comprises a light-emitting array structure which comprises a plurality of first light-emitting units and a plurality of second light-emitting units and is provided with a plurality of pixel regions, each pixel region comprises a plurality of sub-pixel regions, and each sub-pixel region is internally provided with at least one second light-emitting unit and at least one first light-emitting unit, the plurality of sub-pixel areas comprise a first sub-pixel area, a second sub-pixel area and a third sub-pixel area, the area of the second sub-pixel area is larger than that of the first sub-pixel area and that of the third sub-pixel area, and the number of the first light-emitting units in the second sub-pixel area is larger than that of the first light-emitting units in the first sub-pixel area and that of the first light-emitting units in the third sub-pixel area; the color conversion structure is arranged on the light emitting side of the light emitting array structure and comprises a retaining wall layer and a plurality of color conversion layers, a plurality of through holes are formed in the retaining wall layer, the color conversion layers are located in the through holes respectively, and each through hole is opposite to the corresponding sub-pixel area; the orthographic projection of the retaining wall layer on the light-emitting array structure is arranged around each sub-pixel area so as to separate the sub-pixel areas.

The utility model provides a display module and a display device, relates to the technical field of display, and is used for improving color cast of the display module. The display panel comprises a display panel, and the display panel comprises a substrate and a plurality of sub-pixels arranged on the substrate; the display module further comprises a shading structure, the shading structure is located on the light emitting side of the display panel, and the shading structure comprises at least two shading layers which are sequentially arranged in a stacked mode in the direction perpendicular to the substrate. The at least one shading layer comprises a plurality of shading patterns, the orthographic projections of the shading patterns on the substrate are located on the periphery of the orthographic projection of the pixel opening areas corresponding to at least part of the sub-pixels on the substrate, and the shading patterns are located on the periphery of the orthographic projection of the same pixel opening area on the substrate. Orthographic projections of different shading patterns on the substrate are arranged at intervals.

The present disclosure relates to the technical field of display, and provides a display substrate and a manufacturing method therefor, and a display panel, which can solve the problem of low screen brightness in existing display products. The display substrate of the present disclosure comprises: a base substrate; a plurality of sub-pixels arranged on the base substrate, each sub-pixel comprising at least one light-emitting device; a black matrix layer arranged on the side of the sub-pixels facing away from the base substrate and comprising a plurality of first black matrix assemblies, the orthographic projection of one first black matrix assembly on the base substrate at least partially overlapping the orthographic projection of one light-emitting device on the base substrate; and a plurality of first prism assemblies arranged on the side of the first black matrix assemblies close to the sub-pixels, one first black matrix assembly being arranged corresponding to one first prism assembly, and the first prism assemblies being each configured to totally reflect light irradiated onto the first prism assemblies, so that the light is emitted towards the side facing away from the base substrate. According to the present disclosure, the screen brightness of the display substrate is increased while the thickness of the display substrate is reduced.

Embodiments of the present disclosure provide an array substrate, a display panel, and a display device. The array substrate comprises: a base substrate; a first conductive layer located on one side of the base substrate, wherein the first conductive layer has a plurality of first hollowed-out portions; a plurality of first light-shielding patterns in direct contact with the first conductive layer, wherein the first light-shielding patterns comprise second hollowed-out portions extending in the direction of extension of the first light-shielding patterns, and the orthographic projections of the second hollowed-out portions on the base substrate overlap with the orthographic projections of the first hollowed-out portions on the base substrate; and a plurality of second light-shielding patterns located on a layer different from the first light-shielding patterns, wherein the orthographic projections of the second light-shielding patterns on the base substrate overlap with the orthographic projections of the second hollowed-out portions on the base substrate.

The present application relates to a display module (20), a display screen, an electronic device (10), and a display control method. The display module (20) comprises a light-emitting layer (24), an optical modulation layer (28), and a light-shielding layer (29). The light-emitting layer (24) comprises a plurality of pixel units (241). The optical modulation layer (28) is disposed on the emergent side of the light-emitting layer (24) and is used to adjust light emitted by the pixel units (241). The light-shielding layer (29) is disposed on the emergent side of the light-emitting layer (24), and the orthographic projection of the light-shielding layer (29) on the light-emitting layer (24) surrounds at least some of the pixel units (241).

The application relates to the whole vehicle arrangement technical field, in particular to a power system and a car. The power system comprises a driving motor, a transmission mechanism, an output mechanism, a generator, an engine and a flywheel. The driving motor has a first output shaft. The transmission mechanism comprises a transmission shaft, the transmission shaft is in transmission connection with the first output shaft and the output mechanism. The engine is in transmission connection with the flywheel. The first output shaft in the orthographic projection on the first projection plane and the transmission shaft in the orthographic projection on the first projection plane are both separated from the orthographic projection of the flywheel on the first projection plane, and the first projection plane is a plane perpendicular to the length direction of the engine. The generator has an input shaft, the input shaft is in transmission connection with the flywheel, and the orthographic projection of the input shaft on the first projection plane is located in the orthographic projection of the flywheel on the first projection plane. In this way, the compactness of the engine can be improved, the width of the power system is shortened, and the volume thereof is reduced.

Disclosed are a display panel. The display panel includes: a substrate; a pixel defining layer, located on the substrate and including a plurality of fourth openings; an isolation structure layer, provided on the pixel defining layer, where the isolation structure layer includes a light-transmitting portion and a plurality of isolation openings, and an orthographic projection of an isolation opening on the substrate at least partially overlaps with an orthographic projection of a fourth opening on the substrate; and a display function layer, including a light-emitting device provided corresponding to the isolation opening; where an orthographic projection of the light-transmitting portion on the substrate overlaps with an orthographic projection of the pixel defining layer on the substrate The display panel may be applied to the field of under-screen recognition.

A display substrate, a driving method therefor, and a display apparatus, a driving apparatus and a medium. The display substrate comprises multiple sub-pixels, each sub-pixel comprises a pixel driving circuit and a light-emitting device, the light-emitting device at least comprises a first electrode and a pixel definition layer, the first electrode is connected to the pixel driving circuit, and a pixel opening exposing the first electrode is provided in the pixel definition layer; the pixel opening at least comprises a first opening edge and a second opening edge, and the pixel driving circuit is connected to at least one signal line; and in at least one sub-pixel, the orthographic projection of at least one of the first opening edge and the second opening edge on the plane of the display substrate at least partially overlaps with the orthographic projection of the signal line on the plane of the display substrate.

The present disclosure provides an omnidirectional ceiling antenna and an electronic device, and belongs to the technical field of communication. The omnidirectional ceiling antenna comprises a reflecting plate and a radiation structure arranged on the reflecting plate; the plane where the reflecting layer and the radiation structure are located has a certain included angle; the radiation structure comprises a first dielectric substrate and a radiation component arranged on the first dielectric substrate, and the radiation component comprises a radiation part; wherein the radiation part has at least one first slot part, and the orthographic projection of the first slot part on the first dielectric substrate is in a spiral shape; and / or the radiation component further comprises at least one first stub arranged on the first dielectric substrate and coupled with the radiation part.

The invention discloses a display device, a display device preparation method and a display device. The display device comprises a substrate; the light-emitting functional layer is arranged on one side of the substrate, and the light-emitting functional layer comprises a light-emitting unit; the light shielding layer is arranged on the side, away from the substrate, of the light emitting functional layer, the light shielding layer comprises a plurality of light shielding parts arranged at intervals, and orthographic projections of the light shielding parts on the substrate and orthographic projections of the light emitting units on the substrate are not overlapped; the first adhesive layer is arranged on one side, deviating from the substrate, of the shading layer; and the light filtering layer is fixed on one side, deviating from the substrate, of the first adhesive layer. The filter layer can be arranged in a whole layer mode, patterning processing does not need to be carried out on the light-emitting units with different light-emitting colors, color resistors corresponding to the light-emitting units with different light-emitting colors do not need to be formed through a mask plate, and the production cost is reduced. The light filtering layer can be independently fixed through the first adhesive layer, so that the light filtering layer can be independently prepared, and the material of the light filtering layer has more selectivity.

The embodiment of the invention provides a display module and electronic equipment. The display module and the electronic equipment are used for improving the phenomenon that an ambient light opening of the display module is subjectively visible in the related technology. The display module comprises a back plate, a second light shielding layer and a first light shielding layer which are stacked in the first direction. In the first light shielding layer, the first pixel hole is filled with a light filtering layer, and the first light transmitting hole is filled with a first light shielding part and a first light transmitting material. In the second shading layer, second pixel holes are filled with light-emitting units, the second pixel holes and the first pixel holes are arranged in the first direction, and second light-transmitting holes are filled with second light-transmitting materials. The orthographic projection of the second light-transmitting hole on the back plate is located within the orthographic projection of the first light-transmitting hole on the back plate, and at least part of the orthographic projection of the second light-transmitting hole on the back plate avoids the orthographic projection of the first shading part on the back plate. The first light shielding part can shield the packaging layer and the touch control layer exposed in the first light hole, so that reflected light is reduced, and the phenomenon that the ambient light hole is visible is improved.

Provided in the present disclosure are a 3D display device and a manufacturing method for 3D display devices. The 3D display device comprises: a display panel, which has a plurality of pixel rows extending in a first direction and sequentially arranged in a second direction; and a light adjustment structure located on a light-emergent side of the display panel. The light adjustment structure comprises a first substrate, a first compensation layer located on the side of the first substrate away from the display panel, and a second compensation layer located on the side of the first compensation layer away from the first substrate, wherein the refractive index of the first compensation layer is smaller than that of the second compensation layer; a plurality of protrusions are provided on the side of the first compensation layer facing the second compensation layer; and the orthographic projections of the protrusions on the first substrate at least partially overlap with the orthographic projections of the pixel rows on the first substrate.

The utility model is suitable for the technical field of robots, and discloses an obstacle crossing wheel mechanism, a robot chassis and a robot, the obstacle crossing wheel mechanism comprises at least two obstacle crossing wheels, and each obstacle crossing wheel is rotationally connected to a chassis body; in the first direction, the at least two obstacle crossing wheels are arranged in at least two rows, and the obstacle crossing wheels in the two adjacent rows are arranged in a staggered mode. In two adjacent obstacle crossing wheels in the first direction, the orthographic projection of one obstacle crossing wheel in the second direction comprises a first part, and the orthographic projection of the other obstacle crossing wheel in the second direction comprises a second part; the first part and the second part are overlapped along the second direction; in the third direction, the height difference between the first radial lowest point of the previous obstacle crossing wheel and the third radial lowest point of the advancing wheel is H1, the height difference between the second radial lowest point of the next obstacle crossing wheel and the third radial lowest point of the advancing wheel is H2, and H1 is larger than H2. According to the obstacle crossing wheel mechanism, the obstacle crossing ability of the robot chassis can be improved.

An optical substrate and a display device are disclosed, relating to the field of display technology. The optical substrate includes multiple optical rotation regions and a first light-shielding region. The first light-shielding region is located between at least two adjacent optical rotation regions. The two adjacent optical rotation regions include a first optical rotation region and a second optical rotation region. The first optical rotation region is used to convert linearly polarized light with a predetermined polarization state in incident light into left-handed polarized light, and the second optical rotation region is used to convert linearly polarized light with a predetermined polarization state in incident light into right-handed polarized light. The optical substrate includes a substrate, and multiple touch electrodes and multiple touch traces disposed on one side of the substrate. The multiple touch electrodes are separated from each other and are not connected. Each touch electrode is connected to a touch trace in a one-to-one correspondence. The touch electrodes are used to detect the touch position of a touch object on the optical substrate. Furthermore, in the orthographic projection onto the substrate, the touch electrodes overlap with the optical rotation regions, and the touch traces are located within the range of the first light-shielding region.

This utility model provides a fully automatic multi-style handle cutting device, including a frame, a worktable, a first baffle, a second baffle, a cutting component, a feeding cylinder, and a discharging cylinder. The worktable and cutting component are mounted on the frame. The first and second baffles are arranged parallel to each other on the worktable, forming a first feeding channel between them. The cutting component is located at one end of the first feeding channel, and the discharging cylinder and feeding cylinder are located at the other end of the first feeding channel. The feeding cylinder and discharging cylinder are mounted on the worktable. The central axis of the feeding cylinder is parallel to the center line of the first feeding channel, and the central axis of the discharging cylinder is perpendicular to the central axis of the feeding cylinder in the orthographic projection direction. Compared with other handle cutting methods, this device has high working efficiency, can meet the needs of large-scale production, and significantly improves operational safety. It also improves processing accuracy, enhances the stability of the handle's forward movement, and can meet various handle cutting requirements.

The invention discloses a CBCT (cone beam computed tomography) metal artifact removal method and system based on projection domain metal identification, which skip the traditional image domain segmentation and orthographic projection process, directly extract key geometric features of a metal area in an original projection image, and match with a pre-established metal model library to obtain a metal artifact removal result. The high-precision identification and spatial attitude estimation of the metal object are realized, the processing flow is obviously simplified, and the identification stability and the artifact repair effect are improved. In order to solve the problems of shielding and overlapping possibly occurring in a multi-metal structure, a step-by-step stripping type recognition mechanism is provided, multi-target interference is effectively avoided through round-by-round recognition, fitting and image updating, and the accuracy and integrity of model matching are ensured.