Method and device for rendering mass moving targets

Abstract

The invention provides a method for rendering mass moving targets. The method includes the steps that indexes are preset, wherein the indexes include the first-level index and the second-level index, the first-level index is the index between the grid range within which a geographic grid region divided in advance is located and the corresponding second-level index, and the second-level index is the index for the positions of the moving targets located within the grid range and the attributes of the moving targets; a spatial query request is received; the second-level index corresponding to the grid range within which the geographic grid region matched with the request is located is found in the first-level index; the positions of the moving targets located within the grid range and the attributes of the moving targets are extracted in the second-level index and aggregated to form a moving target data set; the moving target data set is rendered. According to the method, the space searching efficiency of the mass moving targets can be improved, and it can be ensured that mass data are refreshed efficiently in real time and dynamic rendering of the mass data is supported.

Description

technical field [0001] The present invention relates to the technical field of geographic information systems, in particular to a method for rendering a large number of moving objects, and a device for rendering a large number of moving objects. Background technique [0002] Geographic Information System (GIS) is a computer system that collects spatial data and stores, manages, analyzes and presents spatial information. [0003] With the rapid development of transportation, road transportation accidents are also on the rise, and road transportation safety has become a hot spot of social concern. Hazardous chemicals cause severe accidents and environmental pollution incidents, causing serious losses to the safety of people's lives and property, and even affecting social stability. How to improve the supervision level of moving targets and reduce the loss of people's lives and property has become an important problem to be solved urgently. [0004] The mobile target monitori...

AI Technical Summary

Problems solved by technology

[0005] However, in actual operation, when the existing technology dynamically displays a large amount of GPS data, the real-time update efficiency of the data is low, which seriously affects the real-time presentation of massive moving targets, resulting in real-time display when the user requests the GPS data according to the geographical range and attribute conditions. When rendering a large number of moving objects, the dynamic display of information such as the location and attributes of the massive moving objects is not updated in a timely manner. It is impossible to understand the status of each moving object in a timely and comprehensive manner, and the user experience is poor.

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