100 results about "Geographic object" patented technology

A system providing three-dimensional visual navigation for a mobile unit includes a location calculation unit for calculating an instantaneous position of the mobile unit, a viewpoint control unit for determining a viewing frustum from the instantaneous position, a scenegraph manager in communication with at least one geo-database to obtain geographic object data associated with the viewing frustum and generating a scenegraph organizing the geographic object data, and a scenegraph renderer which graphically renders the scenegraph in real time. To enhance depiction, a method for blending images of different resolutions in the scenegraph reduces abrupt changes as the mobile unit moves relative to the depicted geographic objects. Data structures for storage and run-time access of information regarding the geographic object data permit on-demand loading of the data based on the viewing frustum and allow the navigational system to dynamically load, on-demand, only those objects that are visible to the user.

Systems, devices, features, and methods for constructing a graphic model of a geographic object, such as a road sign or features thereof, from an image, such as, for example, to develop a navigation database are disclosed. For example, one method comprises receiving a plurality of images of regions, such as of roads or paths. An image of the plurality of images is identified. A process to determine scale-invariant components of a geographic object in the identified image may be performed. Other processes, such as generating a dictionary to facilitate optical character recognition may be performed. A graphic model of the geographic object is generated based on the scale-invariant components and/or the optical character recognition. The generated graphic model may be associated with a navigation or map database.

An apparatus for generating 3D geographical models includes a processor and memory storing executable computer program code causing the apparatus to at least perform operations including removing points of a cloud depicting vertical structures in meshes of triangles detected in an area corresponding to a set of 3D points responsive to identifying triangles on vertical structures. The triangles include vertices corresponding to geocoordinates. The program code further causes the apparatus to interpolate non-vertical structures of triangles to generate a dense cloud of points. The program code further causes the apparatus to downward project delineated points of segmented rooftops to closest points of a ground to generate 3D polygonal models depicting geographical objects. The program code further causes the apparatus to generate texturized objects responsive to mapping triangle locations to the 3D polygonal models and assign texture to vertical structures and rooftops. Corresponding methods and computer program products are also provided.

The invention discloses a high-resolution remote sensing image segmentation method based on inter-scale mapping. The high-resolution remote sensing image segmentation method has the advantages that aiming at geographical object extraction involved in objet-level change detection, the high-resolution remote sensing image multi-scale segmentation method based on wavelet transform and an improved JSEG (joint systems engineering group) algorithm is provided; aiming at a key problem that a conventional JSEG algorithm affects segmentation accuracy in high-resolution remote sensing image segmentation, a corresponding improvement strategy is adopted to achieve a good effect; wavelet transform is introduced to serve as a multi-scale analysis tool, excessive rough color quantization of the conventional JSEG algorithm is abandoned, and thus, detail information in original images is kept to the utmost; a novel inter-scale segmentation result mapping mechanism is set up, image segmentation of a current scale is realized on the basis of a segmentation result of a previous scale, and correction of the segmentation result of the previous scale is also realized, and thus, accumulation of inter-scale segmentation errors is decreased effectively; finally, an improved multi-scale segmentation strategy and an improved region merging strategy are provided, and over-segmentation and mistaken merging are effectively reduced.

An information processing apparatus includes a three-dimensional map data storage unit for storing three-dimensional map data for use in projecting a three-dimensional space on a map onto a plane, a location information storage unit for storing location information including a type of geographical objects at points spaced at predetermined intervals on the map represented by the three-dimensional map data with the location information in association with the respective point, a geographical object information storage unit for storing geographical object information, the geographical object information including a position of a geographical object on the map and display information relating to the geographic object, and a placement position setting unit for setting a display information placement position indicating a position of a sign pointing to the display information on the map based on the location information present within a predetermined area of the position of the geographical object indicated by the display information.

The invention discloses a geographical video data organization management method supporting storage and calculation linkage. The method comprises the following steps: connecting a video stream to a List data structure of a memory database Redis according to a video frame sequence, wherein real-time query is supported; performing analysis by utilizing the video frame sequence to extract a change element, and storing the change element in a change element memory table of a relational database MySQL; detecting an abnormal event in real time through a trigger mechanism of the MySQL, and storing the abnormal event in an event memory table; establishing an Insert trigger in the event memory table, and synchronizing the event to the Redis in real time when the event is written; pushing the event to a geographic object subscribing the event by utilizing a "subscription/release" message mechanism of the Redis, and driving active execution of video analysis; writing video frames in the memory database into a distributed file system MongoDB in group and in batch according to a time period delta t, and establishing a mixed sheet key of "DAY+CAMERA_ID", so that dispersed storage of mass geographic videos is realized; and forming a motion track of a camera by viewing range sequences of the video frames, and updating the motion track as a node to a time-space index constructed based on the viewing range sequences.

A computer-implemented method including obtaining a subject dataset including two or more features associated with a subject geographic object, obtaining a candidate dataset including two or more features associated with a candidate geographic object, comparing, using a computer, at least two features of the subject dataset to at least two corresponding features of the candidate dataset, at least one of the features compared comprising a geographic feature, and determining whether the candidate geographic object matches the subject geographic object based on the comparison.

The invention provides a method and device for establishing an incremental code library. The method includes the steps that acquired updated data and historical incremental data in a historical incremental database are compared, and the updated data different in key attribute are determined to be non-redundant data; information describing geographic objects is extracted from the non-redundant data and added into a candidate code library; the names of the geographic objects and the spatial positions of all the candidate data in the candidate code library are judged, and multiple candidate data which describe the same geographic object are classified into one same repeating judgment set, wherein the spatial positions of the multiple candidate data are in a preset threshold range; for the multiple candidate date in the same repeating judgment set, the weights of all the candidate data are calculated according to the credibility of data sources of all the candidate data; the candidate data with the highest weight are taken as code library data of the repeating judgment set, and thus the incremental code library is formed. Compared with the prior art, the method and device for establishing the incremental code library can improve data mining efficiency and improve accuracy through repeating judgment and check on the multiple candidate data.

A method for creating situation awareness when scheduling video conferences includes providing a user with access to a set of names stored in a directory service database, and allowing the user to select one or more of the names. In response to selection of one or more names, geographical location values associated with the names in the directory service database are retrieved, and a map is provided. The map and one or more geographical objects showing the geographical location of the users associated with the selected names is then displayed on a display.

The invention discloses a geographic space abnormal accumulation area scanning statistical method based on interaction force. The method comprises the following steps: based on a selected space adjacency type, establishing a spatial neighbor relation matrix; using a spatial interaction model to measure interaction strength between adjacent objects; based on a deep scan method or a breadth scan method, continuously selecting the adjacent objects whose interaction strength is maximum, and adding the adjacent objects into a candidate accumulation area, until the value of likelihood ratio LR/log-likelihood ratio LLR corresponding to high value anomaly accumulation no longer increases or the value of likelihood ratio LR/log-likelihood ratio LLR corresponding to low value anomaly accumulation no longer reduces or the candidate accumulation area reaches maximum specified dimensions, stopping to add the adding the adjacent objects into the candidate accumulation area; performing Monte Carlo simulation on the plurality of formed candidate accumulation areas, so as to detect an abnormal accumulation area which passes non-stochastic hypothesis testing. The method has stronger detection ability on abnormal accumulation areas which are in irregular shapes, and can easily detect the abnormal accumulation area which includes weak links, and non-abnormal geographic objects would not be included in the detected abnormal accumulation area.

The invention discloses a geographic fence automatic correction method. The invention mainly utilizes the space range automatic correction method of the polygon. The geographic fence automatic correction method comprises steps of using geographic fence space information, expressing the geographic fence coordinator serial and the image resource demand type of the geographic fence, like some buildings, some roads, can correspond to the image resource information types like the buildings, the roads, obtaining the demand image resource demand type covered by the geographic boundary, performing successive comparison on the needed image resource object and the geographic coverage area rate, determining the practical geographic object corresponding to the geographic object which is considered as a reservation object, calculating the smallest externally-connected polygon containing all reservation object range, and obtaining the corrected geographic fence.

An apparatus for supplying a detail information of a stereo video or/and geometric object and a method for the same are provided to easily detect the change of the geometric information by comparing the video acquired before one month with the video acquired before one year. An apparatus for supplying a detail information of a stereo video or/and geometric object includes a data acquisition block(110), an MPEG-7 meta data generation block(120), a stereo video and MPEG-7 meta data storing block(130) and a stereo video search and supply block(140). The data acquisition block(110) acquires the global positioning system(GPS) information and an information network system(INS) information with synchronizing with the inner and outer image and the stereo video. The MPEG-7 meta data generation block(120) generates the MPEG-7 meta data the stereo data obtained from the data acquisition block(110). The stereo video and MPEG-7 meta data storing block(130) stores and manages the MPEG-7 meta data generated at the MPEG-7 meta data generation block(120). And, the stereo video search and supply block(140) searches and supplies the stereo video stored at the stereo video and MPEG-7 meta data storing block(130) in response to the stereo video request for the specific region from the terminal.

The invention provides a method for constructing a geographic object ontology oriented to a disaster event. The method comprises the following steps of: 1) facing the geographic disaster event, determining a relevant concept for defining the geographic object ontology, a composition and a construction rule of a geographic object; 2) conceptualizing space information, and extracting semanteme fromthe space information; 3) determining a correlation between the geographic object and a geographic spatial domain; 4) constructing a logic model of the geographic object ontology according to the concept of the geographic object, the relation and the axiom; 5) encoding and formally expressing the ontology so as to construct the geographic object ontology oriented to a disaster event index; and 6)constructing a geographic object ontology example, and inspecting the correctness of the ontology structural model. The constructed geographic object ontology oriented to the disaster event is the basis of an indexing and analyzing tool, and has technical and application value for handling sudden emergency disaster events, preventing and reducing disasters, improving assistant decisions of government departments and promoting deep and popular application of the geographic space information.

A computer-implemented method that includes for each geographic object of a geo-object set, identifying, using a computer, one or more geographic cells of a geographic mapping that each correspond to a geographic area proximate to at least a portion of a geometry of the geographic object and assigning a weighting value to each of the one or more geographic cells identified as corresponding to a geographic area proximate to at least a portion of a geometry of the geographic object such that the one or more geographic cells are associated with the geo-object. The method also including, for each geographic cell assigned one or more weighting values, aggregating the one or more weighting values assigned to the geographic cell to generate an aggregated weighting value for the geographic cell, identifying a set of dense geographic cells (each geographic cell of the set of dense geographic cells having an aggregated weighting value that satisfies a weighting threshold criteria) and generating an index associating each of the one or more geographic cells of the set of dense geographic cells with one or more geographic objects associated with the geographic cell.

The invention discloses a spatial entity mapping method in a fuzzy linguistic environment. Calculation is performed through concepts, attributes and spatial characteristic parameter similarities of a spatial entity and a geographic object, and spatial entity positioning and precise spatial entity mapping in a concept level are achieved; multi-scale classification banks of the spatial entity are built, fuzzy scale factors are extracted from the geographic object facing public services and matched with the multi-scale classification banks, and therefore semantic mapping, based on the fuzzy scale factors, of the spatial entity and the geographic object is achieved. Accordingly, a method which is higher in openness and adaptability can be supplied for the ever-increasing geographic information retrieval requirements.

The invention relates to an event spatio-temporal data analysis method based on a GIS map. The event spatio-temporal data analysis method has the characteristics of firstly, acquiring event data and then performing space positioning on the data; then performing spatio-temporal analysis on the data; immediately, performing spatio-temporal prediction on the processed data; and finally performing data display by a corresponding control. Therefore, by depending on combination of the GIS map and the event spatio-temporal data and effectively carrying out displaying through a control, a rectangular displaying mode of a conventional map space is broken through. Meanwhile, by changing the map into round display and peripherally adding multi-span time display, a spatio-temporal linkage effect is realized. In addition, the spatio-temporal analysis and display of geographic objects are more intuitive and effective by integrating an existing chart display mode. Therefore, by the method disclosed by the invention, analysis on event data can be improved, prediction analysis is performed during statistics, and occurring possibility of subsequent events is reduced.

The invention provides a farmland consolidation plan intelligent design method supported by GeoDesign. GIS, data mining, knowledge discovery and other technologies are comprehensively applied based on a geographic design idea, to carry out geography abstraction and extraction and representation of relevant knowledge rules on farmland consolidation engineering, thus completing parameterization setting of a farmland irrigation subsystem, a hydraulic construction subsystem and a road and protection forest subsystem in a farmland consolidation plan; furthermore, a uniform organization and management method for geographic object space relation, orientation information, attribute information, design parameter and knowledge rules of the farmland consolidation engineering is explored, so that intelligent design of a farmland consolidation plan is realized; on the basis of the intelligent design, GIS space inquiry, space analysis and three-dimensional modeling technologies are comprehensively used, so that three-dimensional modeling, three-dimensional visual analysis and other operations of the farmland consolidation planning engineering are realized. According to the method, the efficiency of the farmland consolidation planning and design can be effectively improved, and a technical support and a decision basis can be provided for efficient utilization of farmland resources, farmland informatization management and precise agriculture.

The invention discloses a location information quick search method based on mask technology and subdivision coding, and relates to the technical field of meshing inquiring and searching of spatial data. The method particularly comprises the following steps: aimed at a searching zone, selecting a subdivision facet set with incidence relation to the searching zone; aimed at each dissection facet p in the dissection facet set, acquiring a searching result; performing bitwise operation of logical negation on the level mask of the dissection facet p, performing logic or operation with GeoSOT coding Gdp of p, and acquiring a coding Gmaxp of the 32th level dissection facet with the maximum GeoSOT coding value contained in the dissection facet p range; adopting the bit comparing method to search the acquired location information of the dissection facet as the searching result; finally summarizing searching results corresponding to all dissection facets in the dissection facet set. The method is applicable to searching of location information of global geographic object in meshing arrangement.

The present invention relates to a method for providing a description of a road segment using locations stored in a geographic database, the description of the road segment being output to a user, the road segment being identified in the geographic database on the basis of location reference points allowing a unique identification of said road segment in the geographic database based on a dynamic Location references technique according to ISO 17572-3. The method comprises the steps of: providing two first location reference points with which a greater road section including said road segment is described, wherein one of the two first location reference points corresponds to a first end of said greater road section and the other of the two first location reference points corresponds to a second end of said greater road section; providing two second location reference points with which the subparts and the positions of the road segment within said greater road section are described.

The invention discloses a motorized station automatic target detection and spatial positioning method based on YOLO-SIOCTL. The method comprises the following steps that: a mobile station acquires hardware configuration; The carrier platform of the vehicle-mounted mobile measurement system carries out image acquisition in the process of driving at a normal speed; Realizing geographic object automatic target detection based on a YOLO algorithm; back calculation of a geographic pixel frame of the image pixel frame is cahieved based on an SIOCTL algorithm; and a single-object multi-space positionpoint is fitted with an optimal position point. The method can be widely applied to the field of patrol supervision, the workload of manual target checking is effectively reduced, the patrol efficiency is improved, the consumption of manpower and financial resources is reduced, and the method has a good application value in practical application.