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46results about How to "Smooth browsing" patented technology

Three-dimensional digital sand table engine technology and device based on aerial photography of unmanned aerial vehicle

The invention discloses a three-dimensional digital sand table engine technology and device based on aerial photography of an unmanned aerial vehicle, and belongs to the technical field of digital sand tables. According to the present invention, the air routes can be planned according to a sand table area actual map, and the unmanned aerial vehicle can carry out the aerial survey automatically tocollect the data according to the air routes. The method comprises the steps of shooting pictures at multiple angles and at the shooting points; recording the photo data information of each shooting point and the corresponding geographic coordinate data; processing the geographic coordinate data acquired by the unmanned aerial vehicle; utilizing a model generation software, calculating and processing the aerial triangulation data by using a data cluster; carrying out model production, generating a three-dimensional data sand table model automatically; carrying out model refinement processing on the three-dimensional digital sand table, and carrying out ground object editing monomer restoration processing and texture mapping, displaying and presenting the generated three-dimensional digitalsand table data on the basis of a sand table engine which is independently researched and developed, and introducing an advanced interaction finger sleeve to achieve the diversified interaction withthe three-dimensional digital sand table, so that the display effect of the sand table is greatly improved.
Owner:王军

Geometric figure simplification method for BIM model

PendingCN110675508ASmooth browsing and managementHigh resolution requirementsImage data processingTriacontagonEngineering
The invention discloses a geometric figure simplification method for a BIM model. The geometric figure simplification method comprises the following steps: 1, acquiring surface geometric data of a BIMmodel body; 2, judging whether a certain grid surface of the BIM model is a triangular surface or not; judging whether the grid is a triangular patch or not according to the number of vertexes of a certain grid of the BIM model; when the polygon is a triangular surface, carrying out triangular patch merging simplification on the polygon, and then carrying out boundary line simplification on the merged polygon by adopting a three-point method; 3, according to a short edge principle, moving a point deleted after simplifying the boundary line of the polygon to the other vertex of the short edgein the adjacent edges; and 4, according to the obtained material information, endowing the simplified model with corresponding material attributes according to grid division. According to the geometric figure simplification method, simplification of triangular patches and boundaries of geometric data of the BIM model can be quickly realized; and by judging the shapes after combination, the advantages of the original geometric figure characteristics of the BIM model can be reserved.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES +1

Method and apparatus for implementing digital broadcast network station based on file type transmission mode

The invention discloses a method for realizing a digital broadcast website, which comprises the following steps: based on a strategy of first storing and then browsing, the content of the broadcast website is made, sent, received and displayed; a webpage to be broadcast is generated and checked whether the webpage meets the standard; the webpage to be broadcast is subjected to compression and security coding and sent to a digital play system; broadcast webpages are alternately downloaded from a plurality of frequency points of the digital broadcast receiving system; the received webpage data is subjected to decompression and decoding; the decompressed and decoded webpage data is subjected to content selection, the release of storage space, the deletion of overdue content and other operations; and a webpage browsing request sent by a browser is received, corresponding response is given according to the request type. The result is as follows: when the broadcast website is browsed in a digital broadcast receiver, data is locally obtained only from the receiver, thereby separating the processes of browsing webpage data and receiving the webpage data in order that the browsing of the webpage has no relation with the quality of a broadcast signal where the receiver is positioned at that time.
Owner:BEIJING YINFULANGDE SOLUTION

Factory model roam browsing method and system based on CATIA platform

The present invention provides a factory model roam browsing method and system based on a CATIA platform. The method includes: dividing an obtained factory frame model into elements, and carrying out light-weight processing on the factory frame model; establishing a refined model of each element frame model, and establishing a corresponding relation table; based on the CATIA platform, adding an identification note label to each element frame model, and according to the corresponding relation table, setting destination URLs of the identification note labels as URLs of the refined models corresponding to the element frame models to establish a link between the each element frame model and the corresponding refined model; loading the factory frame model, and according to a trigger request of users for the identification note labels, loading files triggered by users and corresponding to the destination URLs of the identification note labels to achieve the browse of the refined models corresponding to the element frame models to which the identification note labels belong. The method provided by the present invention achieves fluent browse of the factory, lower demand for computer system, and better user browsing experience.
Owner:CRRC QINGDAO SIFANG CO LTD

Sight tracing method and disabled assisting system using the same

The invention discloses a view line tracking method and an assistant system for the handicapped by using the method. The method comprises the steps of image pretreatment, the orientation of a human eye area by utilizing Harr features, blinking recognition, the inspection and judgment of LED reflecting lightspot in pupils, the accurate position of pupil centre, the calculation of view line direction and so on. The system comprises an embedded-like platform, a camera, a display screen and four LED and wheelchair running control modules which are installed at the four corners of the display screen and arranged into a rectangular. The system is an embedded-type system, which carries out blinking inspection, the inspection of the reflecting lightspots against infrared light sources on corneas,the accurate position of the pupil centers and the judgment of view line directions by the camera and a processor, tracks the view line of human eyes and, meanwhile, carries out the recognition of the status of the human eyes by judging the view line directions of the human eyes when gazing on the screen, thus realizing the functions of wheelchair control, music play control, text reading and webpage rolling. The invention is convenient for use and has high accuracy, thereby being capable of bringing great convenience for the lives of the handicapped.
Owner:SOUTH CHINA UNIV OF TECH

Helicopter navigation method, three-dimensional scene image generation method, device and equipment

The invention provides a helicopter navigation method, a three-dimensional scene image generation method and device, and equipment, and relates to the technical field of three-dimensional reconstruction. The method comprises the steps of obtaining a current position of a helicopter; reading a target three-dimensional image of an area to which the current position belongs from a pre-generated three-dimensional scene image; and displaying the target three-dimensional image, and displaying an icon of the helicopter at a corresponding position in the target three-dimensional image according to thecurrent position. According to the scheme, the target three-dimensional image corresponding to the current position of the helicopter can be read from the pre-constructed three-dimensional scene image, and the icon of the helicopter is displayed in the target three-dimensional image, so that a driver can grasp the three-dimensional geographic information and the surrounding situation of the current flight position more visually; the flight parameters and flight path of the helicopter can be adjusted in time to realize auxiliary navigation of the flight path of the helicopter, and the purposeof improving the safe flight of the helicopter in the area is effectively achieved.
Owner:AERIAL PHOTOGRAMMETRY & REMOTE SENSING CO LTD +1

Compression method and system for BIM (Building Information Modeling) file of transformer substation

The invention discloses a lossless compression method for a transformer substation BIM three-dimensional model file, and the method comprises the steps: importing the transformer substation BIM three-dimensional model file in a GLTF format, carrying out the disassembly analysis according to nodes, obtaining a character set of each three-dimensional model component, carrying out the fuzzy matching of the character sets of all three-dimensional components, and obtaining a three-dimensional model file; calculating the similarity of fuzzy matching of each three-dimensional component to obtain at least one three-dimensional component group of which the similarity exceeds a preset threshold value; displaying the groups of the three-dimensional components; and in response to a selection operation of a user, determining a three-dimensional component group needing to be compressed, and carrying out association multiplexing on geometric information of the three-dimensional model components in the group to obtain a compressed standard three-dimensional model file. The invention further discloses a corresponding system. By implementing the method, lossless compression can be performed on the BIM model file of the transformer substation, and the method has the advantages of high compression rate, small distortion and manual control of the compression rate.
Owner:SHENZHEN POWER SUPPLY BUREAU
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