34results about How to "Guaranteed splicing effect" patented technology

The invention discloses a double-fisheye lens panorama camera calibration method and device, a storage medium and a terminal. The double-fisheye lens panorama camera calibration method comprises the following steps of: determining a to-be-calibrated inner parameter and a to-be-calibrated outer parameter; obtaining a first pair of fisheye images shot by a double-fisheye lens in allusion to a checkboard calibration plate and a random feature point calibration plate; adjusting the position of an optical center by utilizing differences between a first projection coordinate of an angular point in the checkboard calibration plate and coordinates of angular points in the first pair of fisheye images, so as to obtain an optimum optical center; updating the double-fisheye lens to be the optimum optical center, and obtaining a second pair of fisheye images shot by the double-fisheye lens; and adjusting a value of a distortion multinomial coefficient and a value of the outer parameter by utilizing coordinate differences, in a panorama image, of a plurality of random feature points of the random feature point calibration plate in the second pair of fisheye images, so as to obtain an optimum distortion multinomial coefficient and an optimum outer parameter. According to the method and device, the storage medium and the terminal, the correctness of calibrating fisheye lenses can be improved.

The invention relates to an automobile data recorder panoramic video generation method, which comprises the following steps: 1) transforming virtual viewpoints; 2) performing cylindrical projection; 3) splicing images; 4) circularly storing; 5) performing panoramic display. Aiming at the video image characteristics of an automobile data recorder, the difficulties of lens blocking, lens position difference, angle difference and other panoramic vide generation can be solved by digital picture processing technique of virtual viewpoint transformation, cylindrical projection and parameter searching-based image splicing, the 360-degree panoramic situation around automobile driving can be recorded, excellent circular viewing effect can be achieved, the stored data quantity can be reduced, and the recording time can be prolonged under the same storage space condition.

The invention discloses a multi-viewpoint video splicing and fusion algorithm based on multiple resolutions. The algorithm comprises steps as follows: step 1, mapping multi-frame video images of different viewpoints at a same moment on a same reference cylindrical surface, wherein the video of each viewpoint comprises video images of multiple moments; step 2, splicing two adjacent video images at the same moment, wherein the video images are obtained after mapping; step 3, balancing the brightness of the overlapping parts after splicing the two adjacent video images at the same moment, thus finishing fusing the multi-viewpoint videos. According to the multi-viewpoint video splicing and fusion algorithm based on multiple resolutions provided by the invention, the splicing and fusion processes are accelerated by reducing the resolutions; the color and gradient information is considered comprehensively; and the multi-viewpoint videos are spliced and fused at a high speed in a high quality.

The invention provides a furnace wall structure of a push plate furnace, and belongs to the technical field of kiln facilities. The push plate furnace comprises a furnace body, there is a combustion chamber in the center of the furnace body, the furnace wall structure comprises a combustion chamber side wall body, and the combustion chamber side wall body comprises combustion chamber side wall upper bricks and combustion chamber side wall lower bricks. The furnace wall structure is characterized in that combustion chamber side wall lower brick matching bosses are constituted at the upper portions of the combustion chamber side wall lower bricks, the combustion chamber side wall upper bricks comprise combustion chamber side wall transition bricks and combustion chamber side wall top bricks,transition brick matching boss compensation cavities are arranged at the bottoms of the combustion chamber side wall transition bricks, combustion chamber side wall transition brick matching parts are arranged at the upper portions of the combustion chamber side wall transition bricks, combustion chamber side wall top brick matching parts are arranged at the lower portions of the combustion chamber side wall transition bricks, avoiding cavities are arranged on the sides, facing upwards, of the combustion chamber side wall top bricks, electrical heating rod bearing cavities are arranged at thebottoms of the avoiding cavities, and the side portions of combustion chamber top wall bricks are supported at the upper portions of the combustion chamber side wall upper bricks. The furnace wall structure has the advantages that masonry operation strength is reduced, good leakproofness at joints is ensured, the masonry construction speed is increased, the erection cost is reduced, and the energy-saving effect is ideal.

The invention relates to a multifunctional automatic lath splicing machine, and belongs to the technical field of wood processing machines. The lath splicing machine comprises a rack, an upper heating mechanism, a lower heating mechanism, an upending mechanism and a pushing mechanism; the pushing mechanism comprises a pair of pushing plate acting cylinders, a pushing plate and a pair of pushing plate synchronizing devices; the upper heating mechanism comprises a set of upper heating pipes, an upper heating pipe heating medium leading-in header pipe and an upper heating pipe heating medium leading-out header pipe, the lower heating mechanism comprises a set of lower heating pipes, a lower heating pipe heating medium leading-in header pipe and a lower heating pipe heating medium leading-out header pipe, a lath moving channel is formed between the upper heating pipes and the lower heating pipes, and a lath pressure exerting mechanism is fixed to the upper heating pipes; first upper heating pipe floating connection devices are arranged under the left side and the right side of a left adjusting beam respectively, second upper heating pipe floating connection devices are arranged under the left side and the right side of a right adjusting beam respectively, each first upper heating pipe floating connection device and each second upper heating pipe floating connection device each comprise an adjusting screw rod, screw rod lifting lugs are formed at the lower ends of the adjusting screw rods, and the adjusting screw rods are sleeved with springs; screw rod lifting lug connecting bases are formed on the upper heating pipes respectively.

The invention discloses a pulling belt type round log splicing machine and a round log splicing method. The pulling belt type round log splicing machine comprises a frame, pulling belts, drawing cylinders, at least two outer supporting frames and inner supporting frames. The outer supporting frames are used for supporting the outer wall of a hollow round log, the inner supporting frames are used for supporting the inner wall of the hollow round log and arranged at two ends of the hollow round log, and the outer walls of the inner supporting frames match with the inner wall of the hollow round log. The outer supporting frames are mounted on the frame and uniformly distributed along the length direction of the hollow round log, and the radian of the inner walls of the outer supporting frames is uniform with that of the outer periphery of the hollow round log. A body of each drawing cylinder is mounted on the frame, a piston rod of each drawing cylinder is connected with one end of the corresponding pulling belt, and the other end of each pulling belt is wound on the hollow round log prior to being connected with the frame. The pulling belt type round log splicing machine and the round log splicing method have advantages that structural simplicity and convenience and quickness in operation are achieved, and positioning accuracy and high efficiency in a sector splicing process are realized; owing to positioning and supporting of the inner supporting frames in preliminary pressurizing, displacement and deformation of the hollow round log are avoided at a preliminary stage, and hollow round log splicing effects are improved.

The invention discloses a hot press forming die and a method thereof. The die comprises a top end upper die, wherein side edge notches are formed in the left side and the right side of the top end upper die correspondingly, pressure reducing openings are formed in the side edge notches, a vertical rod is fixedly connected to the top end of the top end upper die, a fixed top plate is movably connected to the top end of the vertical rod, a motor is fixedly connected to the middle section of the top end of the fixed top plate, a screw rod is movably connected to the bottom end of the motor, and a clamping pressing plate is movably connected to the outer side of the bottom end of the screw rod. According to the hot press forming die and the method thereof, the pressure reduction opening can ensure that the air pressure in the die is kept balanced with the outside, it is convenient and fast to demold the die, by arranging the side notch, the splicing effect of the top end upper die is maintained conveniently, the vertical rod can increase the stability of the top end fixing top plate during use, and meanwhile, the motor can drive the screw rod to rotate; and the screw rod is helped to ascend and descend to pressurize the interior of the die, so that the forming effect in the die is improved.

The invention discloses a raw material splicing device. The raw material splicing device comprises a flat bed plate (1), and two retaining plates (2) perpendicular to the bed plate (1) are arranged at two ends of the bed plate respectively. A threaded sleeve (3) is arranged on one of the retaining plates (2) and penetrates through the same. A screw (4) matched with the threaded sleeve (3) is mounted in the threaded sleeve (3), and an ejector plate (5) is mounted at one end of the screw (4) between the two retaining plates (2). The screw is arranged in the threaded sleeve and can move relative to the bed plate along the axis of the bed plate by being rotated and can drive the ejector plate so that finger-joint or spliced wood among the ejector plate and the retaining plates is pressed, after finger-joint adhesive is dried, the wood can be completed by finger joint or splicing, a machine tool is substituted, and finger joint or splicing of small wood is lower in cost and easy to implement.

The invention discloses part splicing equipment with a conveying structure for machining, and relates to the technical field of machining. The part splicing equipment comprises a base, a clamping mechanism and a splicing mechanism, a placement frame is arranged at the position, close to the edge, of the upper end of the base, a feeding conveying belt is arranged on the left side of the upper end of the base, by means of a magnetic suction plate and a connecting block which are distributed in parallel, the position accuracy between the magnetic suction plate and the connecting block can be guaranteed, the magnetic suction plate connected with the connecting block through a fastening bolt is convenient to mount, dismount and replace, a hinge body can be well protected by means of a protection layer arranged on the upper surface of the magnetic suction plate in a matched mode, the situation that scratches appear on the surface of the hinge body in the splicing process is avoided, limiting columns arranged at the upper end of the magnetic suction plate are matched with threaded holes formed in the two sides of the hinge body, the accuracy of the hinge body placed at the upper end of the magnetic suction plate each time can be guaranteed, the hinge body can be subjected to power-on adsorption and power-off loosening through the magnetic suction plate, and the splicing efficiency is effectively improved.

The invention relates to pliers, in particular to copper core wire butt pliers for an electrician, and aims at solving the technical problem of designing the copper core wire butt pliers for the electrician capable of quickly stripping the outer skin of the copper core wire and ensuring the wiring effect. The copper core wire butt pliers for the electrician comprise a first clamp plate, a second clamp plate, plier handles, an arc guide rail, an arc sliding sleeve, a support plate, etc. The second clamp plate is hinged on the first clamp plate. The first clamp plate and the second clamp plate are respectively provided with the pliers handle. The arc guide rail is connected on the first clamp plate. The two cooper core wires are butted by driving the spiral rod through the driving device, and the copper core wires can be evenly wound under the action of the spiral rod and the splicing effect can be ensured. Besides, the skin of the cooper wire cores can be molten through the electric heating rod so that manual skin stripping of the copper core wires is not required, the wires can be clamped and straightened by the wire clamp devices during wiring and thus the wiring effect can be guaranteed.

The invention belongs to the technical field of digital image processing, and particularly relates to a method for automatically splicing images by adjusting the height of an x-ray detector, which comprises the following steps of: S1, calculating three-dimensional coordinates of joint points; S2, calculating coordinate offset; S3, carrying out initial position positioning; S4, determining coordinates of a moving reference point; S5, successively displacing and shooting an image; S6, splicing the images; according to the method for automatically splicing the images by adjusting the height of the x-ray detector provided by the invention, the position and the size of the overlapped part of the two images can be known by detecting the joint points of the human body, so that the matching splicing of the two images is realized, and the image splicing is easier.

The invention discloses a multi-channel video pushing method and system, equipment and a readable storage medium. The method comprises the following steps: acquiring a first channel video stream and asecond channel video stream; respectively converting the first path of video stream and the second path of video stream into images according to video frames, performing feature point extraction on the image in each path of video stream every other i frames from the first frame, taking the frame for feature point extraction as an extraction frame, matching the feature points extracted from the corresponding frames in the first path of video stream and the second path of video stream to obtain a feature matrix, storing the feature matrix, splicing graphs between the current extraction frame and the next extraction frame based on the feature matrix of the current extraction frame to form a spliced image, and transmitting the spliced image after compression coding. According to the technicalscheme provided by the embodiment of the invention, multi-channel video streams are spliced and pushed, the obtained video streams are subjected to single-frame processing, and feature extraction andfeature matching are carried out once on each frame of images, so that the video splicing effect can be ensured, and the real-time performance of the video is not influenced.

The invention discloses a medical image stitching method which comprises the following steps of: A, inputting a multi-view video image sequence, and processing according to the time sequence; if the current frame is a key frame, sequentially executing steps B to H; otherwise, skipping over steps B to D, and directly performing subsequent steps E to H by use of the camera parameter calculated by use of the previous latest key frame; B, preprocessing multiple multi-view images of the current frame; C, performing characteristic extraction and matching of adjacent view images; D, estimating the camera parameter according to the extracted characteristic point and corresponding matching information; E, performing geometric correction on the image according to the obtained camera parameter; F, performing projection conversion and joint calculation according to the corrected result; G, performing further image stitching; and H, storing and displaying the final image. The method disclosed by the invention has the advantages of good image stitching effect and high efficiency.

The invention discloses an arc-shaped lock and an LED display screen. The arc-shaped lock comprises a fixing mechanism and an angle adjustment mechanism. The fixing mechanism and the angle adjustmentmechanism are mounted on adjacent box bodies correspondingly so that splicing of the adjacent box bodies can be completed. The fixing mechanism comprises a support seat, a casing pipe, a twisting handle and a fixing rod. The casing pipe is arranged on the support seat. The fixing rod is coaxially connected with the twisting handle. The casing pipe and the twisting handle are each provided with a thread. After angle adjustment is completed through the angle adjustment mechanism, the twisting handle drives the fixing rod to rotate. The fixing rod is coupled with the angle adjustment mechanism, so that the fixing mechanism and the angle adjustment mechanism are fixed relatively. The casing pipe is in threaded connection with the twisting handle so that the fixing rod can be prevented from shaking. The arc-shaped lock contains a small number of components and is simple in production process and low in cost; meanwhile, the casing pipe is matched with the twisting handle for fixing the fixing rod so that the fixing rod can be prevented from shaking under the influence of external force or the gravity of the fixing rod; and reliability is higher, and the splicing effect can be guaranteedconveniently.

The invention provides an automatic board splicing machine with a crossbeam adjustment function and belongs to the technical field of woodworking machines. The automatic board splicing machine comprises a machine frame, an upper heating mechanism, a lower heating mechanism, a board pressing mechanism, a turning mechanism and a pushing mechanism, wherein the pushing mechanism comprises a pair of pushing plate actuation cylinders, a pushing plate and a pair of pushing plate synchronization devices; the upper heating mechanism comprises a set of upper heating pipes, an upper heating pipe heating medium lead-in header pipe and an upper heating pipe heating medium lead-out header pipe; the lower heating mechanism comprises a set of lower heating pipes, a lower heating pipe heating medium lead-in header pipe and a lower heating pipe heating medium lead-out header pipe; a board row moving channel is formed between the upper heating pipes and the lower heating pipes; the board pressing mechanism is fixed to the upper heating pipes; opposite sides of a pair of left machine frame stand columns are open, and opposite sides of a pair of right machine frame stand columns are open; a left adjustment crossbeam gear shaft is arranged in a left adjustment crossbeam chamber, and a right adjustment crossbeam gear shaft is arranged in a right adjustment crossbeam chamber; left adjustment crossbeam vertical adjustment mechanisms are arranged in a pair of left machine frame stand column chambers respectively, and right adjustment crossbeam vertical adjustment mechanisms are arranged in a pair of right machine frame stand column chambers respectively; each left adjustment crossbeam vertical adjustment mechanism comprises a lifting actuation cylinder, a ruler screw rod adjustment plate, a ruler screw rod, a ruler screw rod fixing plate, a synchronous adjustment rack and a gear.

The embodiment of the invention discloses a house vector diagram splicing method and device, and a computer readable storage medium. The method comprises the following steps of determining a pluralityof vector diagram pairs from a house vector diagram group conforming to a set spatial layout rule, wherein each vector diagram pair comprises two adjacent house vector diagrams in the house vector diagram group; for each vector diagram pair, determining a reference splicing strategy of the two house vector diagrams included in the vector diagram pair according to the common element sequence of the two boundary vector direction groups of the two house vector diagrams included in the vector diagram pair; wherein the hour hand sequences of the two boundary vector direction groups are opposite; obtaining an overall splicing strategy by utilizing the reference splicing strategies corresponding to all the vector diagram pairs; and obtaining a target splicing vector diagram of the house vector diagram group by utilizing an overall splicing strategy. According to the method, overall splicing of the house vector diagram group can be conveniently realized, compared with the related technology,splicing efficiency can be improved, and the splicing effect can be ensured.

In order to solve the problem that feature points on the same small target at different positions are easily recognized as the same feature point by a traditional SIFT registration algorithm, so that feature point matching errors are caused, and a panoramic image splicing result is influenced, the invention provides an ultra-high-definition panoramic image registration technology for a manned spacecraft AIT process, and in order to solve the problem, the ultra-high-definition panoramic image registration technology for the manned spacecraft AIT process is provided by utilizing a perceptual hash algorithm during feature registration. The method comprises the following steps: performing coarse purification on a matching point pair by using a single site, PHA, then judging whether the matching point is on a specific target, and removing the matching point on the specific target, so as to solve the problem of registration errors during feature registration, and specifically comprises the following steps: S1, constructing a training sample set for specific target detection by using original data collected by a single site; s2, training a detection model based on a Haar feature cascade classifier; s3, determining image matching point pairs based on an SIFT method; s4, performing coarse purification on the matching point pairs by utilizing a perceptual hash algorithm; s5, removing matching point pairs on the specific target based on the detection model; and S6, constructing an image transformation model.