38results about How to "Improve stitching accuracy" patented technology

The invention relates to the technical field of metal casting, in particular to a preparation method of a casting with a complex pipe cavity and a mold, and the preparation method comprises the steps of mold core preparation, wax mold design, basic wax mold preparation, integral wax mold preparation, mold shell preparation and smelting and pouring. The basic wax mold preparation comprises the step of designing a plurality of block wax molds according to a casting pipe cavity structure; the whole wax mold preparation comprises the steps that a mold core and a plurality of block wax molds are combined and assembled through a splicing tool, so that the mold core is arranged in a multi-angle special-shaped pipe cavity defined by the block wax molds, and a whole wax mold is obtained; wherein partial areas of at least partial pipe bodies of the mold core are the same as the inner diameter of the multi-angle special-shaped pipe cavities in the corresponding positions so as to be precisely matched, and the rest partial areas of at least partial pipe bodies are arranged in the multi-angle special-shaped pipe cavities in a suspended mode. By means of the preparation method, it can be guaranteed that the block wax mold is accurately matched with the mold core, and the size precision of an inner cavity of a later casting can be guaranteed through the size precision of the mold core.

The invention provides a multi-probe lithographic apparatus and a lithographic method, the multi-probe lithographic apparatus comprises a plurality of exposure unit groups capable of independently moving relative to each other, and each exposure unit group comprises one or more exposure units. The photoetching method comprises the following steps: dividing a pattern to be photoetched into a plurality of sub-patterns, wherein each sub-pattern corresponds to a writing field of a single exposure unit; determining an exposure sequence of the plurality of sub-graphs, the exposure sequence indicating an exposure unit for executing exposure of each sub-graph and a moving sequence of each exposure unit, and the graph to be photoetched is simultaneously photoetched by at least the exposure units in the two exposure unit groups, the distance between any two adjacent exposure unit groups in the plurality of exposure unit groups is greater than the size of a writing field of a single exposure unit; initializing the relative position of each exposure unit group in the plurality of exposure unit groups according to the exposure sequence; and performing exposure of the image to be photoetched according to the exposure sequence.

The utility model relates to the technical field of silicon rod processing, and particularly discloses a two-splicing type silicon rod splicing device. The two-splicing type silicon rod splicing device comprises a base, a placing table is arranged on the base, and a supporting block and a first positioning assembly located on one side of the supporting block are arranged on the top face of the placing table; a sliding seat, a visual inspection mechanism and a second positioning assembly arranged on the sliding seat are arranged on the other side of the supporting block, and the sliding seat is in sliding connection with the base and is driven by a first driving mechanism to move towards or away from the placing table; the second positioning assembly is connected with a lifting driving piece for driving the second positioning assembly to move up and down relative to the sliding seat; the visual detection mechanism is used for detecting the width of the abutted seam between the two silicon rods; a side pushing mechanism is arranged at one end of the supporting block and pushes one silicon rod to move towards the other silicon rod in the length direction. According to the two-splicing type silicon rod splicing device, two silicon rods can be automatically spliced, the splicing efficiency is high, and the splicing precision is high.

An unfolded circle splicing mechanism comprises a support, at least two driving assemblies arranged on the support, a plurality of transmission assemblies arranged on the driving assemblies, a plurality of locking assemblies arranged on one sides of the transmission assemblies respectively, and a pressing cylinder arranged on one side of the locking assemblies. The transmission assembly comprises a first connecting rod, a second connecting rod correspondingly arranged on one side of the first connecting rod, a third connecting rod rotationally connected with the first connecting rod, a fourth connecting rod arranged on one side of the third connecting rod and a fifth connecting rod arranged on one side of the fourth connecting rod. The locking assembly comprises a containing block and a clamping strip rotationally connected with the containing block, and the unfolded circle splicing mechanism drives the transmission assembly to swing through the driving assembly and drives the locking assembly to swing. The mechanism is high in splicing precision, capable of saving manpower resources and suitable for flow line production.

The utility model provides a light-emitting diode (LED) box body with a protection function, which belongs to the technical field of LEDs and comprises a box body made of aluminum materials. A first boss and a second boss are arranged on the edges of the two sides of the box body respectively, a lock catch device is integrated on the first boss, and a lock hole matched with the lock catch device is formed in the second boss. The rear cover of the box body adopts a buckle type connecting structure; protection corners are arranged at the four corners of the box body, damping rods and springs are arranged on the protection corners, and the damping rods are sleeved with the springs. The box body is also provided with a wire buckle. A handle is arranged on the box body and connected with the box body through a hinge mechanism. When the device is used, a user can quickly open or close the rear cover through a buckle type connecting structure adopted on the rear cover, namely at least two groups of symmetrically distributed buckles are clamped in the clamping grooves of the box body, so that the user can more conveniently and quickly maintain, overhaul or upgrade equipment in the box body, and the maintainability of the device is improved.

The invention discloses a building road and bridge pouring construction process and device. The building road and bridge pouring construction device comprises a plurality of road and bridge pouring formwork bodies which are transversely spliced together. Each splicing structure is arranged between every two adjacent road and bridge pouring formwork bodies and comprises a splicing block fixed to the surface of one side of the corresponding road and bridge pouring formwork body, a splicing groove formed in the surface of the other side of the corresponding road and bridge pouring formwork body and corresponding to the splicing block, and an outer side type locking structure arranged between the splicing block and the splicing groove; each sealing structure is arranged between every two adjacent road and bridge pouring template main bodies; according to the building road and bridge pouring construction technology and device, through the innovative splicing structure and sealing design, it is avoided that penetrating type screw holes are formed in the splicing positions of the formworks, the problems that concrete leaks from the screw holes and slurry leaks in the pouring process are fundamentally solved, the defects of honeycombs, pitted surfaces and the like on the surface of the concrete are effectively prevented, and the construction quality is improved. The appearance quality of the road and bridge structure is remarkably improved, the road and bridge structure is smoother and more attractive, and the sealing performance of the formwork is enhanced.

This utility model discloses a medical suture locking device and its usage method, aiming to solve problems such as complex suturing operations, uneven tension, and difficulty in synchronous adjustment of multiple sutures in existing technologies. The device consists of a clamping shell, clamping latches, a locking mechanism, a spring-loaded mechanism, and medical sutures. Through a socket-type connection and a sliding rail groove structure, it achieves precise suture fixation and tension control. The spring-loaded mechanism design ensures that the clamping latches automatically spring back to the closed state, facilitating rapid suture adjustment; the locking mechanism, in conjunction with the limiting groove structure, effectively prevents latch displacement and suture loosening. The device is compatible with various suture specifications, and the optimized tooth shape enhances the fixing force. Compared with traditional technologies, this utility model is simple to operate, has stable performance, significantly improves surgical efficiency and safety, and is particularly suitable for high-precision surgeries such as valve repair, providing an ideal solution for surgical procedures.

The invention is suitable for the technical field of image processing, and provides a microsphere image splicing method and device, terminal equipment and a computer program product, and the method comprises the steps: carrying out the superposition of channel images collected at the same position of a microsphere in each channel of a specified round, and obtaining a microsphere small image corresponding to each position; the two microsphere small graphs at any adjacent positions have an overlapping region with a set proportion; on the basis of a preset sequence and the overlapping areas, splicing the microsphere small images in sequence to obtain a complete image corresponding to a specified round; after each time of splicing is completed, recording the reference position of the spliced small image in the new canvas after each time of splicing is completed; and on the basis of the reference position of each microsphere small image in the complete image, splicing the channel images of different positions of each channel of each round to obtain a composite image of each channel of each round. According to the invention, high-precision and high-efficiency alignment of cross-round and multi-channel panoramic images can be realized, and error propagation can be effectively inhibited.

The application discloses a multifunctional scanning rod for temporary dentures and relates to the technical field of oral implantation and repair. The scanning rod comprises a shell, an expansion sleeve, an inner screw, a threaded sleeve and a reference rod. An assembly hole is arranged in the shell and penetrates in the axial direction, a fixed part of the expansion sleeve is fixed in the assembly hole, and an expansion part is surrounded by a plurality of elastic expansion plates and is gathered to the axial line in a natural state. The inner screw has an outer threaded section and a distraction section, the threaded sleeve is internally provided with a first reverse conical insertion hole and a second insertion hole with an inner thread, and the outer periphery of the threaded sleeve is provided with a first outer thread and a second outer thread with different pitches. The outer threaded section of the inner screw is connected with the second insertion hole, and the distraction section is located in the expansion part. The rod part of the reference rod is threadedly connected with an inner mounting hole of the inner screw. When the reference rod is rotated, the distraction section radially expands the expansion plates. The scanning rod has adjustable locking force, high connection rigidity and can significantly improve the reliability of in-mouth scanning data.

The invention relates to the technical field of steel structure welding, and discloses a welding device for steel structure production, the welding device comprises a mounting table and a mounting ring fixedly connected to the mounting table, and a transmission groove is formed in the top of the mounting ring; according to the welding device for steel structure production, the transverse connecting rods of the frame are accurately placed into the positioning and fixing mechanism through the welding feeding mechanism, the connecting rods are positioned and fixed through the positioning and fixing mechanism, the welding feeding and splicing mechanism is arranged in the mounting groove, and the welding feeding and splicing mechanism is used for automatically feeding and splicing the connecting rods of the frame. The welding mechanism is used for welding and fixing the spliced frame, then the vertical connecting rod is accurately placed on the welded forming frame, then the welding mechanism is used for automatically welding the vertical connecting rod, and the steps are repeated in sequence, so that automatic splicing and welding of the steel structure frame are implemented, manual operation is not needed, and the welding efficiency is improved. And the welding efficiency of the steel structure frame is greatly improved.

The application discloses a cross-scale large-scale electromagnetic surface grid generation method with periodic fine features, comprising the following steps: reading a cross-scale electromagnetic geometric model with periodic fine features, setting a replication direction and a number; setting a periodic boundary condition of the electromagnetic geometric model, determining a source surface and a target surface of the replication direction, extracting a boundary line, and establishing a mapping relationship between the source surface, the target surface and the boundary line; discretizing the electromagnetic geometric model to generate a discrete background triangular grid; generating a size field of the overall geometry according to the periodic fine features and the cross-scale features of the electromagnetic geometric model; generating and merging surface grids of the source surface, the target surface and the remaining surfaces according to the discrete background triangular grid and the size field and the mapping relationship; and batch replicating and merging the surface grids according to the replication direction and the number to generate a cross-scale large-scale electromagnetic surface grid with periodic fine features.

The present invention provides an automatic material roll conveying device, comprising a supporting main frame, a feeding mechanism, a material discharge mechanism, a conveying mechanism and a control device. The supporting main frame comprises a supporting base and a supporting side frame, and a plurality of material replenishing stations are arranged on the supporting side frame, and a single roll loading station is arranged at the rear end; the conveying mechanism comprises a splicing workbench installed at the rear end of the supporting main frame, a front conveying mechanism installed at the front end of the splicing workbench, a rear conveying mechanism at the rear end, and a servo sewing mechanism, a first detector and a second detector arranged therebetween. When the first detector detects that the length of the roll tail reaches a preset length, the front conveying roller and the rear conveying roller stop rotating; the feeding mechanism moves horizontally and equidistantly to the single roll loading station by one station to feed the material roll into the single roll loading station, and resets; the first servo drive motor drives the material roll to rotate. A method for automatic material roll conveying is also provided. The present invention significantly reduces labor costs and significantly improves sewing accuracy and production efficiency.

The present invention relates to a prefabricated cabin and transformer substation for splicing upper and lower layers of a stereoscopic station, comprising cabins of more than two layers and mortise and tenon assemblies, wherein the cabins of more than two layers include an upper cabin and a lower cabin; the mortise and tenon assemblies include tenon components and mortise structures, a first mounting platform is provided on the upper base, a second mounting platform is provided on the top frame, the tenon components are provided on the first mounting platform or the second mounting platform, and the mortise structures are correspondingly provided on the second mounting platform or the first mounting platform; the upper cabin is installed on the lower cabin through the cooperation of the tenon components and the mortise structures, and the tenon components are provided with a guide portion for guiding the mortise structures. Different from the prior art, the present invention can effectively improve the splicing accuracy, improve the splicing efficiency, reduce the difficulty of cabin splicing, save costs, and reduce cabin splicing time and labor costs.

The invention discloses an automatic splicing device for a flange plate of a cylindrical power transmission tower, which is characterized in that a temporary fixing plate A feeding device, a temporary fixing strip feeding device, a metal film feeding device and a temporary fixing plate B feeding device are sequentially distributed on the outer side of a splicing table around the splicing table; a flange unit plate feeding device is further arranged on the outer side of the splicing table and located between the temporary fixing plate B feeding device and the temporary fixing plate A feeding device, the splicing table comprises an annular fixing table, an annular rotary table is coaxially arranged on the inner side of the annular fixing table in a rotating mode, the annular rotary table is driven by a driving motor, and a stand column is arranged in a center hole of the annular rotary table. A welding device A, a welding device B, a pressing device and a welding device C are correspondingly arranged on the side wall of the top of the stand column. According to the structure, the automatic splicing device for the cylindrical power transmission tower flange plates achieves automatic production of splicing the flange plates through the flange unit plates, the splicing efficiency is improved, and the quality of follow-up flange plate full welding is guaranteed.

The invention relates to the technical field of metal casting, in particular to a preparation method of a high-precision wax mold with a pipe cavity and a mold, and the preparation method sequentially comprises the following steps of mold core preparation, wax mold design, block wax mold preparation and block wax mold assembly. The wax mold design comprises the step of dividing a casting wax mold into a bottom wax mold, a rear wax mold and a front wax mold; the block wax mold splicing comprises the steps that a mold core, a bottom wax mold, a rear wax mold and a front wax mold are spliced through a splicing tool, the mold core is arranged in a multi-angle pipe cavity defined by a first pipeline groove, a second pipeline groove and a third pipeline groove, and an integral wax mold with the multi-angle pipe cavity is obtained; wherein the partial area of at least part of the pipe body of the mold core is the same as the inner diameter of the multi-angle pipe cavity at the corresponding position so as to be precisely matched, and the other partial area of the mold core is arranged in the multi-angle pipe cavity in a suspended mode. By means of the preparation method, it can be guaranteed that the block wax mold is accurately matched with the mold core, and the size precision of an inner cavity of a later casting can be guaranteed through the size precision of the mold core.

The utility model relates to the technical field of naked eye display, in particular to a dynamic naked eye panoramic all-digital immersive display device with a transverse cylindrical lower section, which comprises a transverse cylindrical frame, a light-emitting diode (LED) display screen module, a rectangular galvanized steel pipe and a fixing piece. The curvature radius of the rectangular galvanized steel pipe is matched with the diameter of the transverse cylindrical frame, and the rectangular galvanized steel pipe is distributed in the axial direction of the cylindrical frame and used for supporting the LED display screen module. U-shaped clamps arranged at the corners of the display screen are adopted as the fixing pieces and matched with strip-shaped clamping grooves in the inner sides of the galvanized steel pipes, connection stability is enhanced through built-in magnet pieces, rapid mounting and dismounting are facilitated, the equipment further comprises fixing frames arranged at the two ends of the transverse cylindrical frame in a sleeving mode, the overall structural strength is further improved, and the equipment is compact in structure, high in visual immersion sense and high in practicability. The method is suitable for scenes such as virtual reality, exhibition display and game experience, and high-quality naked eye panoramic dynamic image presentation is realized.

This invention belongs to the field of steel formwork processing technology, specifically a precast grandstand steel formwork splicing and welding device, including a welding fixture. A steel formwork is mounted on the welding fixture, and pressure strips are respectively provided on both sides of the top of the steel formwork. A first insertion sleeve is fixedly connected to each of the two pressure strips. A first bearing bracket is fixedly connected to each of the first insertion sleeves on the welding fixture, and a first combined sleeve is rotatably connected to each of the first bearing brackets. In this invention, a first hydraulic cylinder drives a linkage frame and a second double-sided gear, causing the pressure strips on both sides to apply equal downward pressure to the top of the steel formwork, avoiding template tilting or stress concentration caused by unilateral pressure. The downward pressure can be adjusted according to the steel formwork model to meet differentiated pre-pressing requirements. The mechanical transmission chain ensures uniform pressure distribution. Pre-pressing before welding effectively constrains the tendency for thermal deformation, providing a stable benchmark for subsequent welding.

The invention discloses a method for splicing large-scale industrial module equipment, belongs to the technical field of large-scale industrial module construction, and aims to solve the problems of low splicing precision, poor quality control, weak tool universality and the like in the prior art. The method comprises the steps of module early-stage preparation, construction site arrangement, module hoisting and positioning, module splicing operation, quality inspection and acceptance, digital filing and the like. A module full life cycle database is established, a high-precision measurement control network is constructed, and an adjustable universal supporting tool and intelligent equipment are adopted, so that high-precision splicing of module butt joint unfitness smaller than or equal to 0.5 mm is achieved; bIM simulation, real-time monitoring and automatic welding technologies are combined, so that the defect rate of the welding seam is reduced to 1% or below. The device can adapt to heavy modules of 50-500 tons and 10-50 meters, the tool cost is reduced by 60% or above, the construction period is shortened by 40% or above, and the device is suitable for the high-precision requirement fields of the nuclear industry, the petrochemical industry and the like.

This invention relates to the field of digital inkjet printing technology, specifically to a method, device, and storage medium for full-circumference inkjet printing on the surface of curved objects. The method includes calculating the total number of physical ink dots around the circumference of the curved object and the printer resolution; using image processing to precisely match the total number of pixels around the pattern, the total number of encoder signals, and the total number of physical ink dots to achieve seamless 360° splicing; for irregular curved surfaces, three-dimensional data is acquired through contour scanning, and the number of ink dots is dynamically adjusted based on the perimeter ratio to achieve adaptive dot-mapping printing. The printing device includes a clamping device, a printhead module, a crossbeam, a printhead, an encoder, and a control unit, adaptable to printing on the inner and outer surfaces of various curved objects. This invention offers advantages such as high splicing accuracy, stable image quality, wide surface adaptability, and strong industrial adaptability, effectively meeting the needs of small-batch flexible production and large-scale mass production.

The invention relates to the technical field of image processing, in particular to a real-time aerial image processing and intelligent mapping system based on deep learning, which comprises an image acquisition module, a preprocessing module, a deep learning analysis module, an image splicing module, an intelligent mapping module and a data storage and management module. Multi-type sensor image data are collected in real time through an unmanned aerial vehicle, preprocessing and deep learning analysis are carried out, and target recognition, scene classification and object segmentation of images are achieved. And then, the system splices the plurality of images into a complete map through a feature point matching algorithm and a deep learning optimization algorithm, and generates a high-resolution two-dimensional map and a high-resolution three-dimensional terrain model according to different requirements. Meanwhile, the system supports real-time storage, management and encrypted transmission of data, and ensures the security and integrity of processed image data. According to the invention, the precision and efficiency of aerial image processing are significantly improved, and the method is suitable for complex scenes requiring real-time response, such as disaster monitoring and environmental protection.

The utility model relates to the technical field of assembly tools, in particular to a lower frame track beam positioning reinforcing plate assembly welding device which comprises a base, a bracket is fixedly arranged on the upper end face of the base and used for supporting a track beam, the base is connected with a pushing frame through a transverse linear sliding way, and a double-end air cylinder is arranged in the pushing frame in the longitudinal direction in a fixed structure mode. An output shaft of the double-end air cylinder can stretch out of the outside, the two output shafts of the double-end air cylinder are fixedly provided with movable plates, the two movable plates are arranged on the two sides of the pushing frame respectively, positioning blocks are arranged on the outer sides of the movable plates in a fixed structure mode, and magnets are arranged on the vertical walls, on one sides of the positioning blocks, of the movable plates in a fixed structure mode. The positioning blocks are matched with the grooves in the reinforcing plates to position the reinforcing plates, and then the magnets are used for fixing the reinforcing plates.

The utility model relates to the technical field of wood veneer splicing machines, in particular to a furniture wood veneer splicing machine which comprises a working plate and a plurality of wood veneers, two placing frames used for limiting the wood veneers are arranged on the top face of the working plate, a frame body is fixed on the top face of the working plate, and the furniture wood veneer splicing machine further comprises a gluing mechanism arranged on the bottom face of the transverse plate end of the frame body and used for gluing the wood veneers. The veneer gluing device is used for conducting accurate gluing treatment on a gap between every two adjacent veneers. Through the multi-dimensional adjustment design of the gluing mechanism, accurate positioning and dynamic gluing of veneer gaps are achieved, the motor drives the screw to rotate, the connecting plate is driven to move left and right, and the gluing pipe is aligned to the transverse position of the gaps; the electric cylinder controls the lifting plate to adjust the height of the gluing pipe to adapt to veneers with different thicknesses; the gluing electric push rod pushes the glue passing box to move front and back, gluing is conducted along the track of the gap, meanwhile, the camera body observes the position of the gap in real time and cooperates with the electromagnetic valve to control glue output, and it is guaranteed that the gluing position is accurate and the glue amount is uniform.

The invention discloses a method for installing a calcium silicate board wall surface, which comprises the following steps of: painting a wall surface base layer by adopting a permeable interface treating agent, preparing quick-drying polymer self-leveling mortar into slurry after the permeable interface treating agent is in a semi-cured state, and constructing and curing to form a transition layer; the calcium silicate board is cut, and a limiting buckle is installed; pretreating a gluing template, butting the pretreated gluing template with the back surface of the calcium silicate board, gluing through a two-component glue gun, quickly demolding, supplementing glue, and attaching the calcium silicate board to a transition layer for calibration and fixation; gun nails are adopted for assisting in fixing, and splicing and limiting of the calcium silicate boards are achieved by means of limiting buckles. According to the method, by optimizing the component design of the interface treating agent and the mortar and matching with the processes of differential base layer treatment, gluing, demolding and the like, stable connection of the wall surface base layer and the calcium silicate board is achieved, the method has the advantages of being high in construction efficiency, good in installation flatness and high in crack resistance, and the transition layer is excellent in strength and bonding stability; the quality problem is not easy to occur after long-term use of the wall.

The utility model relates to the technical field of silicon rod processing, and particularly discloses a four-splicing type silicon rod splicing device. The four-splicing type silicon rod splicing device comprises a base, a placing table is arranged on the base, sliding seats are arranged on the two sides of the placing table, and the two sliding seats are connected with the base in a sliding mode and jointly move towards or away from the placing table under driving of a driving mechanism; a positioning assembly is connected to the side, facing the containing table, of the sliding base in an up-down sliding mode and connected with a lifting driving piece. The base is further provided with two visual detection mechanisms arranged on the two sides of the placement table respectively, a third visual detection mechanism located at one end of the placement table and two side pushing mechanisms located at the other end of the placement table, and the three visual detection mechanisms detect the width of abutted seams on the two sides of the silicon rod and one end of the silicon rod respectively; and the two side pushing mechanisms respectively push the corresponding silicon rods to move along the length direction. According to the four-splicing type silicon rod splicing device, four silicon rods can be automatically spliced, the splicing efficiency is high, and the splicing precision is high.

The utility model relates to multi-slit push-scan type hyperspectral imaging system, including front objective lens, multi-slit element, spectrometer imaging subassembly and panchromatic focal plane detector, multi-slit element sets up in the imaging light path of front objective lens, multi-slit element includes rectangular window and multiple parallelly arranged slits, and the rectangular window department sets up filter, spectrometer imaging subassembly respectively receives the light that transmits from rectangular window and slit and handles after, focuses to panchromatic focal plane detector again, panchromatic focal plane detector gathers the light after spectrometer imaging subassembly processing, forms spatial image and spectral data, realizes the errorless splicing and fusion of spectral image according to the position and attitude change in spatial image continuous two frames, obtains the spectral image of high spatial resolution, high spectral resolution. The utility model front lens, the joint design of multi-slit element and spectrometer imaging subassembly obtains the optical system that spectrometer imaging performance is excellent, and the volume is small, and the signal-to-noise ratio is high, and the image acquisition rate is high.

The application relates to the field of display module design, and provides a preparation process of a full-flip COB mirror display module and a laser cutting machine, wherein the preparation process comprises the following steps: S1, incoming inspection of a PCB substrate; S2, fixed-pointing of full-flip RGB LED chips on the PCB substrate; S3, reflow soldering of the chips in nitrogen; S4, vacuum mold encapsulation of a COB display layer; S5, fine cutting of a process edge of the PCB substrate; S6, cleaning and plasma activation of super-thin glass; S7, mutual adhesion of the super-thin glass and a mirror high-light encapsulation layer through an OCA optical adhesive layer; S8, high-pressure defoaming treatment; S9, laser cutting; S10, fine polishing of an edge of the super-thin glass; S11, annular sealing point gluing at a joint between the super-thin glass and the PCB substrate, constant-temperature solidification, and preparation of a COB display module; S12, full inspection testing; and S13, repair of defective products. Therefore, the problems of easy edge collapse, low precision and poor yield of existing processes can be solved, and the synchronization of the COB display module thinning, super-high splicing precision, high mirror quality and high yield in mass production can be realized.

The invention discloses a cave three-dimensional laser point cloud space registration method of an invalid fixed solution. The method comprises the following steps: extracting longitude, latitude and elevation data in a *. Csv format file to form an Excel file; the method comprises the following steps: directly endowing file data with a geographic coordinate system, converting to generate a vector file with the geographic coordinate system, converting the vector file into a vector file of a projection coordinate system, calculating and assigning projection coordinates of a track of scanning equipment, retaining the projection coordinates and elevation fields, selecting corresponding X, Y and Z fields, and reading. Generating three-dimensional space linear track data with projection coordinates; the three-dimensional space linear track and the three-dimensional laser point cloud data of the station are subjected to manual registration by taking the three-dimensional space linear track as a reference, and the subsequent point cloud splicing is subjected to manual registration by taking the data of the station after space registration as a reference and adopting the ground feature features of the coincident section. According to the method, effective utilization of invalid fixed solutions can be realized, and the cave measurement and splicing precision is improved.

The invention relates to the technical field of video processing and live-action fusion, and discloses a real-time video stream distortion correction and splicing method for live-action fusion. According to the method, multi-source data are synchronously collected through a camera array ad hoc network integrating multiple sensing units, effective spatial anchor points are generated and screened through five-mode fusion, video elements are decomposed, association with the anchor points is established, distortion correction and spatial calibration are synchronously completed based on an adaptive element calibration matrix, and the distortion correction and spatial calibration precision is improved. And finally, dynamic seamless fusion of multiple paths of videos is realized through virtual space adaptive grid splicing. According to the method, a traditional linear processing flow is thoroughly overturned, the core problems of high splicing delay, poor dynamic scene adaptability and insufficient multi-element cooperative calibration precision in the prior art are solved, the method is suitable for various live-action fusion scenes such as urban traffic monitoring and large-scale venue security and protection, and the real-time performance and the seamless performance of video splicing are remarkably improved.

A micro-nano imprinting device and a micro-nano imprinting system. The micro-nano imprinting device comprises a fixing part, an illumination part and a light shielding part. The fixing part is configured to fix an imprinting template, the imprinting template comprising a first surface and a second surface opposite to each other, and the first surface is provided with an imprinting pattern. The illumination part comprises a light source, the illumination part is located on one side of a reference plane away from the imprinting pattern, and the light source is configured to irradiate the imprinting template fixed by the fixing part. The light shielding part is arranged on the fixing part and located on one side of the reference plane away from the illumination part. The reference plane is a plane where the second surface of the imprinting template fixed by the fixing part is located, the light shielding part is in an annular structure, and the orthographic projection of the light source on the reference plane is in the enclosed area of the orthographic projection of the light shielding part on the reference plane. The micro-nano imprinting device integrates the fixing part, the illumination part and the light shielding part together, has high imprinting efficiency, and can perform multiple imprinting more efficiently. Meanwhile, under the shielding of the light shielding part, the splicing seam between adjacent patterns can be better reduced.