36 results about "Map extent" patented technology

To preserve the contiguity of file map extents of a production file when making a series of snapshot copies, the snapshots share indirect blocks of the production file through virtual pointers. When a write to a data block of the production file is first done since the time of the most recent snapshot so that the most recent snapshot can no longer share one of the contiguous indirect blocks, a new indirect block is allocated to store the file mapping metadata for the most recent snapshot, and a virtual pointer for the snapshots is changed to point to this new indirect block. Therefore the change in the virtual pointer changes the file mapping metadata for any number of snapshots sharing the new indirect block so that the method is scalable.

In one embodiment, a flash-optimized, log-structured layer of a file system of a storage input / output (I / O) stack executes on one or more nodes of a cluster. The log-structured layer of the file system provides sequential storage of data and metadata on solid state drives (SSDs) to reduce write amplification, while leveraging variable compression and variable length data features of the storage I / O stack. The data may be organized as an arbitrary number of variable-length extents of one or more host-visible logical units (LUNs). The metadata may include mappings from host-visible logical block address ranges of a LUN to extent keys, as well as mappings of the extent keys to SSD storage locations of the extents. The storage location of an extent on SSD is effectively “virtualized” by its mapped extent key such that relocation of the extent on SSD does not require update to volume layer metadata.

A system for collaborative decision-making and more efficient disaster management, in which multiple geobrowsers can communicate over local networks and / or the Internet to create a real collaborative experience when dealing with geospatial information, distributed using Open Geospatial Consortium (OGC) compliant KML / KMZ formats, WMS (Web Mapping Service), or and geospatial data files. All manipulation functions (dataset loading, layer stacking, layer visibility changes, Point of View (POV) changes, map extent changes, looping and animation settings, geospatial file creation and annotation drawing, and other functions) are replicated across all connected geobrowsers to create a true collaborative geospatial Common Operating Picture (COP). The leadership role can be handed over to other users if desired to build upon all the datasets and annotations sent by previous leads. Additionally the designated lead user can record the current state of the map and reproduce this on demand or automatically on other geobrowsers.

Method, apparatus and program product are provided for controlling the number of symbols presented on an vehicle electronic map display by using a first threshold constant for the number of symbols to be presented in FULL detail and a second threshold constant for the number of symbols to be presented in MINIMUM detail. In a first embodiment, the total number of selected symbols is compared to the threshold constants for each symbol type. In a second embodiment, the number of symbols of each type is compared to the respective threshold constants for each type. Excessive map clutter is avoided without regard to the map range selected by the user and for both high density and sparse map regions.

The invention discloses an intelligent pet necklace and an implementation method thereof. The intelligent pet necklace comprises a necklace body which comprises a control unit, a power supply unit, an activity positioning unit, a language translation unit, an activity detecting unit and a health monitoring unit, wherein the activity positioning unit is used for acquiring activity track and current geographical location information of a pet; the language translation unit is used for acquiring voice information of the pet, making comparison with information in a pet language library and translating; the activity detecting unit is used for detecting current motion information of the pet, establishing habitual activity database and carrying out analyzing; and the health monitoring unit is used for acquiring current physical health data information of the pet and feeding the acquired physical health data information back to a mobile terminal and a cloud server terminal in real time. According to the intelligent pet necklace, the pet language can be analyzed, identified and translated, the activity distance and the activity time of the pet can be limited by the set of a map extent or time, and if the activity distance and the activity time exceed set threshold values, the mobile terminal warns, so that the use is convenient.

The invention discloses a method and a system for searching materials based on an electronic map. The method comprises the following steps of: uploading world map software to a world map uploading display sub-system; marking selected media information to a certain position of the map, marking the site where the material event occurs at the position, and displaying the marking result on corresponding position of the map; automatically searching out the media information marked in the displayed map and the time range by the system according to the displayed map and the set time range; displaying the sites having materials on the map within a range of the map, and marking the sites. After clicking a marked site, the material corresponding to the marked site can be previewed. The method greatly improves speed of marking and searching video occurring events, thereby improving work efficiency. In addition, the invention also discloses a system for implementing the method.

A data preservation function is provided which, in one embodiment, includes mapping in a plurality of maps for a target storage device, map extent ranges of each map, to corresponding target extent ranges of storage locations on the target storage device. Usage of a particular map extent range by a relationship between a source extent range of storage locations on a source storage device containing data to be preserved in the source extent range, and the target extent range mapped to the map particular extent range, may be indicated by the map. In another aspect, in response to receipt of a data preservation command, a data preservation operation is performed including determining whether a map indicates availability of a map extent range mapped to the identified target extent range. Upon determining that a particular map indicates availability of a map extent range mapped to the identified target extent range, a relationship between the identified source extent range and the identified target extent range is established. In yet another aspect, upon determining that no map indicates availability of a map extent range mapped to the identified target extent range, establishing of a relationship between the identified source extent range and the identified target extent range may be delayed until it is determined that a particular map indicates availability of a map extent range mapped to the identified target extent range. Other features and aspects may be realized, depending upon the particular application.

The invention discloses a mass position check-in data visualization method which comprises the steps that 1, position check-in data are captured from a data collection terminal, and the collected data are stored into a database; 2, the position check-in data collected in the step 1 are managed; 3, the map extent is determined according to the geographical range needing to be collected; 4, the NodeCanvas technology is adopted for drawing a geographical map; 5, the collected position check-in data are drawn on the geographical map obtained in the step 4; 6, a result picture is output. According to the mass position check-in data visualization method, visualization can be carried out according to different measuring scales, the visualization effect is attractive, and the data distribution rule is visually reflected; meanwhile, the mass position check-in data visualization method can operate data more flexibly, effectively achieves big data visualization data reading, can achieve mass data visualization more easily, and is high in drawing efficiency, easy to implement, good in effect and capable of drawing complex graphs.

The invention discloses a hitching car sharing method. The hitching car sharing method is based on a GPS map, and searched objects are identified on the map. In addition, man-car bidirectional searching is adopted, the objects are filtered in the range and direction aspects, an optimum matching grade prompt is given out, and software can be suitable for car or taxi sharing.

The invention discloses an obstacle boundary generation method and device, and the method comprises the steps: recording the coordinates of an obstacle when self-walking equipment encounters the obstacle, collecting the coordinates of a plurality of obstacles with the distances meeting the requirements into an obstacle point set, generating an obstacle boundary based on each obstacle point set, and updating a map. Therefore, in the working process of the self-walking equipment, the map information of the self-walking equipment can be synchronously updated on the basis of the response action ofthe self-walking equipment to the obstacle. According to the invention, the obstacle boundary in the map range can be accurately updated so as to accurately control the robot to walk by itself.

The invention relates to the field of image processing, and specifically discloses a 3D photo frame apparatus capable of forming images in 3D geological body scenarios. The 3D photo frame apparatus is characterized in that: a rectangular profile model is pre-displaced in an image processing system so as to complete the information procession action of a cutting profile and form images afterwards. The 3D photo frame apparatus can display an object in the 3D geological body scenarios, and integrates all parameters needed by the cutting profile to the 3D photo frame object, so that users can visually and directly determine and arrange the position of the profile and the map extent, control cutting behavior and effectively increase operation efficiency.

The invention is applicable to the field of geographic information technology and provides an efficient display method and device for dynamic legends in a WebGIS environment. The method comprises: layering an entire map according to a level, dividing a grid for each layer, storing legend information in the grid into a current grid, and finally obtaining full-grid data containing legend information; when the map range is changed, obtaining all grids intersecting with the current map range according to the current map range and level, and eliminating the duplicate legend information in all grids; displays the final legend information on the user interface. Through the above preprocessing process, all grids contain the symbolic information of each layer in the map, which effectively improvesthe performance of dynamic legend calculation in the case of too much data in the map, reduces the read-write access to the data itself, and improves the overall performance of the system.

The invention discloses a navigation display method and system. The method comprises the steps of determining a map range displayed on a screen in a navigation process; displaying a map picture in themap range in a screen, wherein the map picture comprises at least one part of a navigation path and a name of at least one map element in the map range; according to the map range, the navigation path and the position of a moving object, determining a display position of at least one front road section into which the moving object is about to enter in the screen; determining a first position of the road name of the front road section displayed in the screen according to the display position of the front road section in the screen; and highlighting the road name of the front road section at the first position. According to the method provided by the invention, the map information related to the navigation path can be highlighted at the proper position of the screen of a user terminal in the navigation process, so that a user can watch conveniently.

The invention provides a map updating method and device, and a storage medium. The method comprises the steps of obtaining a to-be-updated map; acquiring a plurality of frames of first images in a to-be-updated map range; identifying a first processing object in the first image; generating three-dimensional point cloud data including the first processing object according to the first image; and updating the map to be updated according to the three-dimensional point cloud data. According to the map updating method and device and the storage medium provided by the invention, the map updating cost can be reduced.

The invention discloses a map framing method and system based on a road side unit, equipment and a storage medium, and the method comprises the steps: marking a road node closest to the road side unit to belong to the road side unit when there is a road node which is not marked to belong to the road side unit, and setting the road node as a starting node; traversing downstream nodes of the starting node, and marking the downstream nodes which are within a preset maximum distance or do not belong to other road side units to belong to the road side units; and when the road nodes of which the road side units are not marked to belong do not exist, generating map framing data according to a road node marking result. The method and system have the technical effects that each road node is classified to the corresponding road side unit equipment, so that the map range corresponding to each road side unit equipment is divided, map division is carried out, simple map information is realized, and the bandwidth burden in the Internet of Vehicles information interaction process is reduced.

The invention discloses a store recommendation method based on geographic information grid density. The store recommendation method comprises the following steps: establishing grids of a separation map; obtaining the total number of the target stores in the map range and the number of the target stores in each grid unit, and calculating the target store density in each grid unit, the target storedensity being the ratio of the number of the target stores in the grid unit to the total number of the target stores in the map range; and selecting a corresponding number of target stores from the target stores in each grid unit according to the set recommended number and the target store density to obtain the recommended target store. The current map is separated by utilizing the grids, and therecommendation quantity is determined according to the store density in each grid, so that the required stores can be recommended to the user, and the objective distribution condition of the stores inthe map range can be reflected.

The invention discloses an intelligent pet necklace and an implementation method thereof. The intelligent pet necklace comprises a necklace body which comprises a control unit, a power supply unit, an activity positioning unit, a language translation unit, an activity detecting unit and a health monitoring unit, wherein the activity positioning unit is used for acquiring activity track and current geographical location information of a pet; the language translation unit is used for acquiring voice information of the pet, making comparison with information in a pet language library and translating; the activity detecting unit is used for detecting current motion information of the pet, establishing habitual activity database and carrying out analyzing; and the health monitoring unit is used for acquiring current physical health data information of the pet and feeding the acquired physical health data information back to a mobile terminal and a cloud server terminal in real time. According to the intelligent pet necklace, the pet language can be analyzed, identified and translated, the activity distance and the activity time of the pet can be limited by the set of a map extent or time, and if the activity distance and the activity time exceed set threshold values, the mobile terminal warns, so that the use is convenient.

The embodiment of the invention provides a distributed index construction method, and relates to the technical field of computers. The method comprises the following steps: determining the number of alternative hierarchies in allusion to a map range when spatio-temporal data is stored; for each alternative hierarchy number, constructing at least one division precision combination corresponding tothe alternative hierarchy number by utilizing each division precision related to the map range; selecting a target division precision combination meeting a predetermined condition from the plurality of constructed division precision combinations, wherein the predetermined condition is that after each piece of sample spatio-temporal data is stored in a map range according to the division precisioncombination, the number of the sample spatio-temporal data stored in a specified range of the map range is minimum; and according to the target division precision combination and the corresponding target alternative hierarchy number, constructing a distributed index for storing spatio-temporal data in allusion to the map range. Compared with the prior art, by applying the scheme provided by the embodiment of the invention, the query performance of the established distributed index can be improved.

An electronic control device acquires route information to a destination on the basis of first map information, and if a part of the route to the destination is outside of a map range of either the first map information or second map information having a map range different from the first map information, transmits the acquired route information to the destination on the basis of the second map information. The destination is changed, and a route to the destination based on the second map information is generated.

The invention provides a positioning method of an AMCL algorithm based on a Gaussian model and a storage medium. The method comprises the steps of receiving laser data, and converting the laser data into map coordinate system data according to a set conversion parameter; filtering data exceeding a map range and a sensor range; judging whether a recently occupied grid of a measurement point in the map coordinate system data is less than a threshold value or not, and if so, marking the measurement point as a laser matching point; normalizing the actual distance between the laser matching point and the occupied grid through a Gaussian model, dividing the normalized data into three groups, and respectively calculating the accumulated normalized distance; carrying out weighted average on the three groups of normalized distances, and calculating a laser matching score of single-frame laser data; and determining the positioning accuracy of the laser data according to the laser matching score. According to the method, the problems of easy failure of robot positioning initialization and continuous positioning under the condition of large environment change, such as the condition that a sensor is shielded by a dynamic obstacle, are solved.

A sandstone type coal mine reserve estimation profile map forming method comprises the following steps that S1, an area needing geological exploration is selected, and a rectangular exploration line map of the area is drawn; S2, an exploration line map extent is determined; S3, the position, relative to the lower end of a first geologic body, of a first drill hole in the rectangular exploration line map is determined; S4, an ore body boundary is delineated on the geological profile map; and S5, ore body connection is carried out.

The invention discloses a three-dimensional map reconstruction method based on navigation point selection, and belongs to the technical field of map three-dimensional reconstruction. The three-dimensional map reconstruction method comprises the following steps: scanning an indoor environment by using a single-line laser radar, establishing a two-dimensional grid map, selecting a plurality of navigation points close to the boundary of the map on the obtained two-dimensional grid map, forming a route according to the navigation points, and driving a robot to perform three-dimensional reconstruction while walking along the route, according to the method, scanning can be carried out on an area with more objects at the boundary of the map, the established two-dimensional grid map range is gradually expanded in the walking process, and all three-dimensional maps of the current indoor scene can be established after multiple cycles. The three-dimensional map reconstruction method provided by the invention has the characteristics of complete map construction and capability of better reconstructing the indoor environment edge area objects.