8 results about "Map extent" patented technology

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.

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.

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 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 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.