19 results about "Map extent" patented technology

The invention provides a high-quality map multi-modal data set making method based on POI data, and the method comprises the steps: setting a map range and a map scaling, calculating the range of each map view under the current map scaling, and counting the number of the map views; reading map view information, and displaying the current map view; obtaining POI data in the current map view field, and displaying the POI as a map picture in the current map view field by using an icon; selecting a POI type, and generating an expression text for expressing a map view POI condition based on the type, the number and the distribution condition of the POI; and traversing all map views in the map range, and generating a map picture and an expression text of the map range. The technical problems that in the prior art, manual map text expression is low in efficiency, time-consuming and labor-consuming, and the precision requirement of large model training for large-scale data is difficult to meet can be solved.

Embodiments of the present application provide a map query method and an electronic device, the method comprising: receiving, by the electronic device, a first query request; displaying a first interface, the first interface comprising a first search result, the first search result comprising at least one geographic location related to the first query request within a map range indicated by a first map region; displaying a second interface, the second interface comprising a first history record, the first history record being associated with the first query request; receiving a second query request based on the first history record; and displaying a third interface, the third interface being the same as the first interface. With the embodiments of the present application, the search result obtained in previous queries can be reproduced when querying based on the history record, the user operation is reduced, and the search result is more accurate.

The invention discloses an incremental mapping method and device and a storage medium, and the method comprises the steps: stopping employing a priori map for positioning if it is detected that a mobile device is out of the range of the priori map, and carrying out the positioning based on a constructed incremental map; if it is detected that the mobile device moves from the outside of the prior map range to the inside of the prior map range, starting a prior map for positioning, matching the environment perception data at the current moment with the prior map based on a branch and bound algorithm, and obtaining a matching score corresponding to a successfully matched pose; unary edge constraints are added to poses corresponding to the environment perception data with the matching scores larger than a preset score threshold value; and carrying out accumulative error optimization on the calculated pose by utilizing unary edge constraint so as to align the incremental map with the prior map. The mapping pose is restrained by adding the unary edge matched with the prior map, the alignment effect between the incremental map and the prior map can be improved, and map ghosting and faults are avoided.

This disclosure discloses a map display method, apparatus, electronic device, and readable storage medium in a game, relating to the field of computer technology. This disclosure provides a player's field of view and a map display area for a thumbnail map of a virtual scene through a graphical user interface. The method includes: controlling a controlled virtual character to move in the virtual scene at a first speed using a first movement method; determining a first viewing distance of the thumbnail map based on the first movement speed; and displaying the thumbnail map of the virtual scene in the map display area based on the first viewing distance. In this disclosure, when the controlled virtual character moves at different speeds, a map range adapted to the character's movement speed can be displayed in the map display area provided by the graphical user interface for the thumbnail map of the virtual scene, satisfying the player's viewing range requirements for the thumbnail map at different character movement speeds and improving the flexibility of the thumbnail map display.

The application discloses a kind of mass geophysical prospecting data storage retrieval and drawing method in mobile terminal map under offline state, it includes: (1) mobile terminal geophysical prospecting data is stored using embedded relational database sqlite, and table is respectively built according to project, view level;(2) when map program runs, according to the level of map display, view range, project authority in lower level, retrieve, render data in the data table of corresponding level;In high level range, only render all line data that meet the conditions according to project authority;(3) when user carries out map zooming, moving operation each time, first retrieve operation of geophysical prospecting data is carried out, according to the result of retrieval, drawing is carried out in batch in different layers;(4) the default map range of first opening of map application is controlled.The application can bring very intuitive efficiency improvement to construction planning management, vehicle mobile navigation, efficient production organization of geophysical prospecting project, the prospect is very broad, and it has very important significance.

The application discloses an automatic cutting method, system, medium and equipment for a high-precision map, and the method comprises the following steps: obtaining simulation data of a high-precision map to be cut; selecting a target cutting range on the simulation data of the high-precision map to be cut and performing cutting; judging whether a road in the simulation data of the high-precision map to be cut is located in the target cutting range, and obtaining a road set located in the target cutting range; obtaining an intersection road set, a road node set, a road marking line set and a road ground object set according to the road set and the target cutting range; and reconstructing a new high-precision map according to the road set, the intersection road set, the road node set, the lane marking line set and the road ground object set. Therefore, after one-time production of the simulation data of the high-precision map to be cut is completed, the simulation data is cut according to a self-defined map range on the basis, so that the integrity of the simulation data elements is not affected, and the work efficiency is improved.

The present application provides a unified map tile access method, device, equipment and storage medium, the method comprising: determining the target specification map tile to be displayed according to the map range to be displayed and the current map level; for any target specification map tile, generating the target specification map tile according to the original specification map tile data using the target tile conversion algorithm; and displaying the map according to the generated target specification map tile. The method can realize the generation and display of another target specification map tile according to the existing specification map tile data.

The invention provides a map data processing method, device and equipment, a medium and an automatic driving vehicle, and relates to the field of data processing, in particular to the technical field of artificial intelligence, automatic driving and intelligent traffic. According to the specific implementation scheme, a view range is determined according to rendering parameters of a current vehicle; determining a view direction according to the driving state of the current vehicle; determining an expansion area according to the visual field range and the visual field direction; determining a first map area in a map according to the expansion area; and updating and displaying the first map area. According to the embodiment of the invention, rendering performance consumption can be reduced, and a larger map range can be displayed.

The invention provides a point annotation sparse method based on importance sorting in a WebGIS (Web Geographic Information System), which comprises data preparation and sparse processing, and the data preparation comprises the following steps of: dividing point elements into necessary display and non-necessary display; setting a relationship between the display of the point elements and the map hierarchy; according to a map range displayed by a browser window, point elements in the map range are extracted, and the provided point elements are stored in a feature List; the method comprises the following steps: defining an allCollision List array and a textList array; the method has the beneficial effects that the point annotation sparse result can better meet the requirements of an application scene according to operations such as classification, sorting and the like, and is more semantic and geographical.

The invention provides a camera border crossing processing method and device, equipment and a storage medium, and the method comprises the steps: obtaining the current position and the current map range of a camera in a geographic information system; judging whether the camera crosses the border or not according to the current position and the current map range; if yes, determining a rollback direction and a rollback distance according to the current position and the current map range; and determining a rollback position according to the rollback direction and the rollback distance, and moving the camera to the rollback position. According to the method and the device, the rollback direction and the rollback distance are determined according to the current position and the current map range when the camera crosses the border, so that the rollback position is determined according to the rollback direction and the rollback distance, and the camera is moved to the rollback position. According to the invention, camera border crossing management in a specific area is realized, geographic information system operation faults caused by camera border crossing are avoided, user experience is improved, and accuracy and integrity of geographic data are ensured.

This invention discloses a long-term robust localization method accommodating scene changes, relating to the field of autonomous navigation and localization technology for mobile robots. The method comprises three stages: a front-end LiDAR inertial odometry stage, which updates the initial pose and distortion-free point cloud through IMU motion integration and ESIKF updates; a fusion map construction stage, which uses map matching scores and pose consistency as dual criteria, combined with incremental octrees to dynamically insert and delete point clouds, generating a fusion map; and a LiDAR matching optimization stage, which extracts ground point, corner point, and area point features, and outputs high-precision localization results through KNN search and L-M optimization. This invention can simultaneously address changes in the environment both inside and outside the prior map area, improving long-term localization robustness and accuracy while reducing computational resource consumption, making it suitable for scenarios such as logistics delivery and autonomous driving.

This invention provides a data spatial query method, apparatus, electronic device, and computer-readable storage medium. The data spatial query method provided by this invention includes: acquiring target business data; constructing a spatial field based on the latitude and longitude data of the target business data; importing the spatial field into a preset index; acquiring the latitude and longitude data of two diagonal vertices within a visualized map area; determining a data query range based on the latitude and longitude data of the two diagonal vertices; acquiring a geographic grid based on the data query range and the shrinkage ratio of the visualized map; and aggregating and statistically analyzing the target business data within the geographic grid area based on the spatial field to obtain query results. The data spatial query method provided by this invention can aggregate points on a large number of maps and respond promptly to the aggregation.

The invention provides a unified map tile access method and device, equipment and a storage medium, and the method comprises the steps: determining a to-be-displayed target specification map tile according to a to-be-displayed map range and a current map level; for any target specification map tile, generating the target specification map tile by using a target tile conversion algorithm according to the original specification map tile data; and displaying the map according to the generated map tile of the target specification. According to the method, the generation and display of another target specification map tile can be realized according to the existing specification map tile data.

The invention discloses a robot long-term positioning and map updating method oriented to a dynamic environment. According to the method, the dual-map structure combining the static map and the dynamic map is constructed, so that robust positioning under the condition of dynamic environment change is realized. In order to solve the problem of positioning failure or accumulated drifting when a map is changed in an existing positioning method, an access judgment mechanism is adopted to detect map change, point clouds in a change area are inserted into a dynamic map to form a double-map structure, a map updating mechanism based on pose map optimization is designed, and real-time updating of a static map is achieved. Compared with a traditional long-term positioning method, the method can cope with various complex conditions such as environment change in a prior map range and exceeding the prior map range at the same time, and effectively improves the robustness and precision of positioning. Meanwhile, the method ensures the freshness of the map, occupies less computing resources, and is suitable for logistics distribution, unmanned driving and other scenes needing long-term operation.

The invention provides a fall prediction and positioning method, and relates to the technical field of old people health, and the method comprises the steps: collecting a map of a room where a user is located, and carrying out the coordinate conversion of the map, and obtaining a map distance; acquiring a step length and an inertial navigation orientation when the user moves in a map range; establishing a behavior detection model, and obtaining an image orientation in the video image when the user moves through the trained behavior detection model; collecting the floor where the user is located, the air pressure of each floor, the floor air pressure of the building and the outdoor temperature when the user moves; establishing a neural network model, wherein the output of the neural network model is an acceleration calibration parameter k, an orientation calibration parameter j and a height calibration parameter h; according to k, j and h, identifying a risk area where the user may fall on a map and predicting whether the user falls, if so, sending an alarm and a falling position to a guardian, and if not, continuing monitoring; the system is suitable for long-term monitoring of indoor activities of old people, is suitable for indoor complex environments, and has an indoor positioning function.

This invention relates to an island-shore suppression method that utilizes radar detection information and geographic information matching. The method first detects targets, then converts the detected targets back into geographic information for matching, determining whether they are island-shore targets. It only needs to calculate a limited number of detected targets, avoiding the need to traverse and judge the geographic information of the entire search area before searching, and calculating the distance and angle distribution of the entire island-shore area. By utilizing radar single-pulse angle measurement information, targets within the same beam are separated, solving the problem of aliasing and indistinguishability when targets are very close to islands. It fully utilizes radar detection information, geographic information, and carrier position and attitude information for matching. The computational load of this method is independent of the map range, dynamically adapting to each search result, with limited and controllable computational load, reducing the complexity of use.

The embodiment of the invention provides a map query method and electronic equipment. The method comprises the steps that the electronic equipment receives a first query request; a first interface is displayed, the first interface comprises a first search result, and the first search result comprises at least one geographic position related to the first query request in a map range indicated by the first map area; a second interface is displayed, the second interface comprises a first historical record, and the first historical record is associated with the first query request; receiving a second query request based on the first historical record; and displaying a third interface, wherein the third interface is the same as the first interface. By adopting the embodiment of the invention, the search result obtained by previous query can be reproduced during query based on the historical record, the user operation is reduced, and the search result is more accurate.