Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

525results about How to "Good stitching" patented technology

Panorama parking calibration method and device, and automatic calibration method

The invention discloses a panorama parking calibration method and a device, and an automatic calibration method, wherein the panorama parking calibration method comprises the steps of obtaining pictures which is captured by an automobile camera; using default parameters of a panorama parking system to generate an aerial view; distinguishing tag blocks on the aerial view; distinguishing controlling points according to the tag blocks; obtaining actual positions and ideal positions of the controlling points, wherein the controlling points are intersection points of lines and distributed in a net shape, and the ideal positions are appointed positions in the aerial view; and optimizing by utilizing difference between the actual positions and the ideal positions of each controlling point in the aerial view and obtaining lens distortion correction parameters and perspective transformation parameters of a wind-angle camera which corresponds to the aerial view. The area of the tag blocks is greater than that of the intersection points and is easy to distinguish. A light color is adopted on distinguish strips and a deep color is adopted on a carrier so as to reduce effects which are caused by reflect light, an absolute coordinate of a calibration pattern on a coordinate system is positioned and calibrated accurately, and a success rate of calibration is improved.
Owner:GUANGZHOU ZHIYUAN ELECTRONICS CO LTD

Large-scale multiple-object ultrasonic tracking and locating system and method

ActiveCN102033222AEnable indoor location trackingOvercoming intractable flawsPosition fixationSonificationEngineering
The invention provides a large-scale multiple-object ultrasonic tracking and locating system and method, relating to an indoor object tracking and locating system and method based on ultrasonic wave. The large-scale multiple-object ultrasonic tracking and locating system comprises an emitting assembly, a receiving assembly and a calculating display unit, wherein the emitting assembly comprises a plurality of ultrasonic signal emitters with different frequencies or different time slot features, and each emitter is installed on different objects and used for periodically emitting ultrasonic signals; the receiving assembly comprises a plurality of ultrasonic signal receiving and processing units for receiving and processing the ultrasonic signal emitted by the emitter; and the calculating display unit comprises a USB (Universal Serial Bus) and an upper computer three-dimensional display server. The invention realizes the tracking and the locating of large-scale multiple-object by schemesof spatial subdivision, time frequency combination, spatial handoff and the like. The locating system of the invention has the characteristics of large locating range, multiple tracking objects, no synchronous error, no need of complex network protocol, low power consumption, high stability and the like.
Owner:JILIN UNIV

Image processing method for panoramic vehicle safety system based on multi-camera self calibration

The invention discloses an image processing method for a panoramic vehicle safety system based on multi-camera self calibration. The image processing method relates to automatic recognition, automatic correction, automatic view angle conversion and automatic splicing image conversion. The image processing method specially comprises the steps that calibration cloth recognition is conducted on collected images, and the position information of edge corner points on checkerboard calibration cloths of the collected images are extracted automatically; a distortion model is established, distortion parameters are iterated, and a distortion correction map is obtained; affine transformation is conducted on the distortion correction map to obtain images after view angle conversion; the images collected by a plurality of cameras are subjected to transformation processing and marked by encoded points, and the images collected by the cameras are spliced and integrated. Compared with the prior art, the image processing method for the panoramic vehicle safety system based on multi-camera self calibration has the following advantages that the method supports splicing of any multiple cameras, splicing is convenient and fast, a user only needs to input the number of the cameras, the calibration cloths are matched for use, and a panoramic image can be spliced in a full-automatic mode.
Owner:CHAOHU UNIV

Separating wallboard for building construction

The invention discloses a separating wallboard for building construction. The separating wallboard for building construction comprises a wall and a fixing base. A first protruding block is arranged on one side of the wall, and a first groove corresponding to the first protruding block is formed in the other side of the wall. The walls can be assembled together through the first protruding blocks and the first grooves and fixed through the fixing bases. Rotating handles are rotated to drive screws to rotate, so that the wall is clamped through movable plates and fixed plates, the wall is fixed, and the wall is conveniently assembled, dismounted and mounted and can be repeatedly used. A water valve is opened, water is sprayed from four spraying openings through a water pipe, dust suppression by spraying is conducted on a construction site through the four spraying openings, the concentration of dust is reduced, and the physical health of constructors is guaranteed. Noise of the construction site is reduced through noise reduction sponge laid on the wall and noise reduction grooves, so that the influence of the noise on nearby residents is reduced. Turn-on and turn-off of eight symmetrical warning lamps on the wall are controlled through an external control switch, so that passing vehicles and people are warned, and the life safety of people is guaranteed.
Owner:叶雨玲

Achilles tendon stitching instrument

The invention relates to an achilles tendon stitching instrument. The achilles tendon stitching instrument comprises a first bracket, a second bracket, a tightness adjusting device, a first guide sleeve, a second guide sleeve, a first positioning tube and a second positioning tube, wherein the first bracket and the second bracket are connected through the tightness adjusting device, a first positioning hole, a first guide hole, a second positioning hole and a second guide hole are respectively formed in the inner and outer arms of the U-shaped arms of the first bracket and the second bracket, the first guide sleeve is fixed through the first positioning hole, one end of the first guide sleeve is matched with the first guide hole, and one end of the first positioning tube penetrates into the interior of the first guide sleeve; the second guide sleeve is fixed through the second positioning hole, one end of the second guide sleeve is matched with the second guide hole, one end of the second positioning tube penetrates into the interior of the second guide sleeve, and through holes matched with an achilles tendon stitching needle are formed in the first positioning tube and the second positioning tube. With the adoption of the achilles tendon stitching instrument, the operation procedures are simplified, and ideal stitching effect is guaranteed.
Owner:GENERAL HOSPITAL OF PLA

Image splicing method based on projection geometry and SIFT characteristics

The invention discloses an image splicing method based on projection geometry and SIFT characteristic matching point pairs. According to the method, firstly, two images with overlapping areas are captured, SIFT characteristic points are extracted from to-be-spliced images, characteristic point matching is carried out through the K-D tree search algorithm, the RANSAC algorithm is further utilized to carry out characteristic point purification to eliminate wrong matching point pairs, a transformation matrix is calculated if the number of characteristic matching point pairs after purification isgreater than 8, if the number of characteristic matching point pairs after the purification is less than 8, the corresponding number of projection matching point pairs are extracted according to the known overlapping areas of the two images to complete the 8 pairs of matching points, a transformation matrix is calculated, image registering is completed, image fusion is carried out through employing the multi-resolution analysis method for the images after registering, and lastly, the spliced image is outputted. The method is advantaged in that a problem of image registration failure due to thefewer pairs of characteristic matching points can be solved through image splicing, and the image splicing effect is excellent.
Owner:CENT SOUTH UNIV

Metal capacitor for all-directional connection and layout method

The invention discloses a metal capacitor which comprises insert finger capacitors of an odd layer and an even layer, wherein the upper part and the lower part of the odd layer comprise transverse routes and a plurality of insert fingers respectively, and the plurality of insert fingers are staggered up and down; the upper part and the lower part of the even layer comprises transverse connection routes and the plurality of insert fingers respectively, the plurality of insert fingers are staggered up and down, and continuous snake-shaped routes are also arranged between the insert fingers staggered up and down; the snake-shaped routes are positioned between the insert fingers; each of the two ends of each snake-shaped route is connected with a vertical connection line; the insert fingers of the even layer and the corresponding insert fingers of the odd layer are shifted for a unit leftwards or rightwards; and the snake-shaped routes of the even layer and the corresponding snake-shaped routes of the odd layer are shifted for a unit leftwards or rightwards. By a metal parasitic capacitance effect, the stacking area of adjacent metal layers is enlarged, a capacitor as large as possible can be obtained in a limited area, and the unit area metal capacitor is effectively expanded.
Owner:INST OF COMPUTING TECHNOLOGY - CHINESE ACAD OF SCI

Sewage filtration device convenient to mount and clear

The invention discloses a sewage filtration device convenient to mount and clear. The device comprises a first mounting rack, filter nets, a first mounting rod, a splicing groove, first mounting rotating shafts and fixing plates, wherein the filter nets are mounted at the upper part and the lower part of the first mounting rack, the splicing groove is formed in one side of the first mounting rod,and each fixing plate is welded on one side of each of the first mounting rotating shaft. The sewage filtration device is scientific and reasonable in structure and safe and convenient to use; a grating and the filter nets are arranged, large-size solid wastes in sewage are cleared by the grating, part of small-size solid wastes in the sewage are cleared by the filter nets, and following sewage treatment is facilitated; second mounting rotating shafts and a power rotating shaft are arranged, the second mounting rotating shafts and the first mounting rack can be effectively driven to rotate through the power rotating shaft, one filter net with excessive solid wastes attached to the surfaces is rotated to the upper part, clearing of the solid wastes is facilitated, and besides, the other filter net can continuously have a function of filtering the small-size solid wastes.
Owner:安徽中疆数字科技有限公司

Sandy saline and alkaline land soil remediation device and remediation method thereof

The invention discloses a sandy saline and alkaline land soil remediation device. The sandy saline and alkaline land soil remediation device comprises a water storage sponge, a bottom plate, a water suction sponge, a shell and a top plate. A separation plate is arranged at the top end in the shell, and a plurality of mounting holes are evenly formed in the separation plate and the bottom of the shell at equal intervals. According to the sandy saline and alkaline land soil remediation device, the water suction sponge is arranged at the position, between an upper pressing plate and a lower pressing plate, in the shell, the water storage sponge is arranged at the position, above the separation plate in the shell, plants are planted on soil above the shell, the water suction sponge can be utilized for absorbing and draining underground water on the deep layer of the soil, it is avoided that underground water where salt is dissolved rises to the surface of the soil through the capillary action to evaporate to form saline and alkaline land, rainwater permeating into the shell can be collected, the interior of the shell and a drainage can be collected, and the service life of the device is prolonged. The wettability of the soil is improved through the water storage sponge arranged above the separation plate, growth of the planting is convenient, the soil on the upper layer is managedand remediated, and therefore the effect and efficiency of saline and alkaline land management are improved.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE

Unmanned aerial vehicle image splicing method based on grid optimization and global similarity constraint

The invention provides an unmanned aerial vehicle image splicing method based on grid optimization and global similarity constraint. The unmanned aerial vehicle image splicing method specifically comprises the steps of extracting feature points of a reference image I and a target image I'and the corresponding relation of the feature points through an SIFT feature point extraction algorithm; meshing the reference image and the target image; solving a local homography matrix of the reference image and the target image after meshing by adopting a local DLT method; performing grid optimization byusing a minimized energy function to align the gridded target image with the reference image so as to eliminate ghosting of an overlapping region and obtain a preliminary spliced image; taking the ground as a landmark, and performing global similar coplanar constraint on the preliminary spliced image to eliminate projection distortion of a non-overlapping part to obtain a final spliced image. Thebeneficial effects of the invention are that the method can achieve the better matching of the features of the images of the unmanned plane through combining the features of the images photographed bythe unmanned plane, achieves the precise registration, and achieves an ideal splicing effect.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Image processing method, drone, ground console and image processing system thereof

ActiveCN108513642AGood stitchingImprove the efficiency of generating special effect imagesPosition/course control in three dimensionsSmallerThanSpecial effects
An image processing method, a drone, a ground console and an image processing system thereof are provided. The image processing method comprises: receiving the special effect shooting control information sent by the ground console; determining the shooting position interval according to the target flight trajectory included in the special effect shooting control information In the shooting posture, the shooting position interval of the non-curved portion of the target flight trajectory is the same, the shooting position interval of the curved portion of the target flight trajectory is smallerthan the shooting position interval of the non-curved portion, the shooting attitude is toward the target photographic subject; and the drone is controlled according to the target flight trajectory Flying, and controlling the camera to shoot the target subject according to the shooting position interval and the shooting attitude to obtain a captured image set; sending the captured image set to theground console, so that the ground console can perform at least part of the captured image in the captured image set. Splicing to generate special effects images. The image processing method can automatically generate a special effect image according to the image set captured by the drone, thereby improving the efficiency of generating the special effect image.
Owner:SZ DJI TECH CO LTD

Easily-assembled environment-friendly moisture-proof flame-resistant wear-resisting splice type floor

The invention discloses an easily-assembled environment-friendly moisture-proof flame-resistant wear-resisting splice type floor. The floor comprises a base plate, wherein the base plate is horizontally arranged, an end face of one end of the base plate in the width direction is protrudingly provided with a plurality of protruding blocks in the length direction of the base plate, the protruding blocks are arranged at intervals in the width direction of the base plate, an end face of the other end of the base plate in the width direction is provided with a plurality of grooves corresponding to and cooperated with the protruding blocks in the length direction of the base plate, the grooves are arranged at intervals in the width direction of the base plate, the height of each protruding block is corresponding to the height of the base plate, and correspondingly, the grooves are arranged in a manner of penetrating the base plate in the height direction of the base plate; a moisture-proof layer, a flame-resistant layer and a wear-resisting layer which are successively coated on an upper surface of the base plate from inside to outside; and an antibacterial layer, an anti-static layer and an anti-corrosion layer which are successively coated on a lower surface of the base plate from inside to outside. The floor is convenient to assemble and splice with high assembly stability and good firmness, has good anti-corrosion, flame-resistant, anti-static and moisture-proof performance and good economic returns, and is simple in structure and long in service lifetime.
Owner:TAICANG JINQIANG FURNITURE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products