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45 results about "Geographic Mapping" patented technology

Creating a representation of areas of the earth or other celestial bodies, for the purpose of visualizing spatial distributions of various information.

Method for rapidly constructing three-dimensional terrain model by use of unmanned aerial vehicle for multi-view camera shooting

The invention discloses a method for rapidly constructing a three-dimensional terrain model by use of an unmanned aerial vehicle for multi-view camera shooting, the method comprises the following steps: collecting terrain information of a region to be surveyed; selecting a type of the unmanned aerial vehicle for aerial camera shooting according to the terrain information of the region; using control software to upload a flight mission to the unmanned aerial vehicle to enable the unmanned aerial vehicle to fly according to a predetermined flight altitude and flight path and meanwhile shoot the ground from multiple perspectives; using 3D model generation software to process collected images to reconstruct the three-dimensional model of the shot region. By use of the flying stability and flexibility of the multi-rotor unmanned aerial vehicle, low-altitude remote sensing measurement can be performed based on the theory of three-dimensional reconstruction of the images, automation and intelligence of a geographic mapping process can be realized through flight path planning and multi-view camera shooting of the unmanned aerial vehicle, precision and efficiency of geo-mapping can be improved, the workload in the geo-mapping is greatly reduced, and the method has the advantages of high degree of automation, large measuring range, low cost and convenient operation and the like.
Owner:TIANJIN UNIV

Satellite-borne laser radar foot point accurate positioning method based on surface model

The invention discloses a satellite-borne laser radar foot point accurate positioning method based on a surface model, and the method comprises the steps: firstly, building a simulation laser radar emission pulse model based on satellite orbit parameters and emission pulse parameters; establishing a surface target response function based on the digital surface model data; and finally, simulating and generating a simulated laser echo waveform by using the generated emission pulse model and a target surface response function, comparing and analyzing the simulated laser echo waveform with an actual waveform, and accurately determining the position of the laser radar foot point by moving the laser spot step by step. The satellite-borne laser radar foot point accurate positioning is carried outbased on waveform simulation and waveform matching, and the surface model can accurately describe various complex surfaces, so that the laser foot point plane positioning precision is high, and the requirements of obtaining high-precision topographic data and national geographic mapping in the later period can be met. The method is high in universality, and can be applied to various satellite settings and laser foot points in various ground environments such as forests, cities, flat grounds and mountainous regions in a positioning manner.
Owner:INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI

High-stability photographing device for geographic mapping

The invention relates to the technical field of geographic mapping, and discloses a high-stability photographing device for geographic mapping. The photographing device comprises a main rod; and the top of the main rod is fixedly connected with a top frame. Through the combined action of the top frame, a clamping block, a movable rod, a rotating column and a rotating disc, a camera is controlled to be in a fixed state by rotating a rotating button, so that the situation that the camera deviates or even falls off due to improper use is avoided, the stability of the camera is improved, the geographic mapping operation is facilitated, the operation is convenient, and the camera is convenient to take. Through the combined action of a pressing ring, an arc rod, a frame rod, an eccentric disc, asleeve, a branch pipe and a support rod, diffusivity is automatically performed to carry out triangular supporting so as to improve the stability of a support; the support length is automatically adjusted according to the flatness degree of the ground, so that the camera is kept in a horizontal state, and the photographing operation is facilitated; and compared with a traditional support mode, the operation is more convenient, and the automation degree is higher.
Owner:NINGBO UNIVERSITY OF TECHNOLOGY

Cross-video target tracking method and system, electronic equipment and storage medium

The invention relates to a cross-video target tracking method and system, electronic equipment and a storage medium. The method comprises the following steps: determining a to-be-tracked video image and an initial target template image; inputting the video image and the initial target template image into a trained deep twin network tracking model, and outputting a target prediction image of the tracking target in the video image through the deep twin network tracking model; mapping the video image into a unified geographic coordinate space by using the trained geographic mapping model to obtain a global geographic coordinate of the video image; and on the basis of the mapped video images, calculating an overlapping region between every two video images through a polygon cutting method, judging whether a target prediction image exists in the overlapping region or not, and performing cross-video target tracking in the video image corresponding to the overlapping region with the target prediction image by using a tracking target handover algorithm. According to the invention, the target can be continuously and stably tracked for a long time, the real-time performance of tracking is ensured, and the tracking precision is high.
Owner:SHENZHEN INST OF ADVANCED TECH

Geographic information mapping system

The invention belongs to the technical field of geographic mapping, in particular to a geographic information mapping system. The geographic information mapping system comprises a machine body, wherein two sides of an upper surface of the machine body are rotationally connected with a connection shaft through a rotary shaft; an upper end of the connection shaft is connected with a protection shellthrough the rotary shaft; a movable slot is formed at the center of the upper surface of the machine body; an upper end of the movable slot is connected with a movable shaft through rotary connection; an upper end of the movable shaft is fixedly connected with a handle; a support base is rotationally connected to the center of a bottom end of the machine body through the rotary shaft; a bottom end of the support base is rotationally connected with a No.1 rod through the rotary shaft; one side surface of the No.1 rod is fixedly connected with a fixed shaft; a protection shell is arranged on the periphery of the outside of a precise instrument at an upper end of a mapping instrument for protecting the precise instrument and preventing the mapping instrument from being damaged under the action of external force; one side of each of support rods at three positions of the bottom end of the mapping instrument is provided with a retractable wheel; and a movable handle is arranged at the upper end of the mapping instrument. The geographic information mapping system is easy to retract, and convenient to use.
Owner:JILIN NORMAL UNIV

Mobile operation and maintenance personnel examination system and method based on GPS positioning

InactiveCN104778553AEnsure timeliness of assessmentImprove normativeResourcesStart timeGeolocation
The invention provides a mobile operation and maintenance personnel examination system based on GPS (Global Position System) positioning. The system comprises a hand-held terminal and a background examination system, wherein the hand-held terminal is used for obtaining work order data from a work order system, the work order data comprises the starting time and the ending time of operation and maintenance work, the hand-held terminal takes the starting time and the ending time of operation and maintenance work as a reference to carry out collection to GPS data of operation and maintenance personnel, after being encrypted, the collected GPS data is stored in the hand-held terminal, and the hand-held terminal then transmits back the collected encrypted GPS data to the background examination system. The background examination system is used for decoding the encrypted GPS data, and operation and maintenance examination is performed according to the decoded GPS data. According to the system provided by the invention, GPS geographic mapping is taken as a basis, with the combination of encrypting and storing, data encrypting and transmitting back, the examination timeliness of the operation and maintenance personnel is ensured, and the normalization and the accuracy of examination to power communication network mobile operation and maintenance personnel can be improved.
Owner:STATE GRID CORP OF CHINA +3
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