Three-dimensional map drawing method and device

Abstract

The invention provides a three-dimensional map drawing method and device. The method comprises the following steps: extracting a target map layer from original map data, wherein the original map datais composed of map layer data, and each map layer data comprises a basic point coordinate set and basic point attributes; performing transformation of coordinates on the basic point coordinate set inthe target map layer so as to obtain point location data under an earth centered earth fixed coordinate system; and drawing the three-dimensional shape represented by the target map layer according tothe point location data. According to the three-dimensional map drawing method and device disclosed by the invention, the collected map data is directly used, the map does not need to be compiled, the time needed for processing the map data is saved, and the condition that the original data information is lost due to the compilation process is avoided. By virtue of direct three-dimensional modeling of the data, the operation of manually calibrating the map data is saved. Moreover, compared with the conventional three-dimensional gap for performing three-dimensional modeling on surrounding buildings of the road, the road model drawn by the method has spatial third dimension.

Description

technical field [0001] The invention relates to the field of map data processing and its visualization, in particular to a three-dimensional map drawing method and device. Background technique [0002] Before smart driving cars are officially put on the road, in order to save costs and ensure the safety of vehicles and road pedestrians, it is necessary to test the driving algorithm of unmanned smart driving cars in a computer-generated virtual environment. In order to provide cars with a drivable road space and simulate the real road as much as possible, in the constructed virtual environment, it is necessary to draw the corresponding 3D road model based on the actual map data. [0003] As an integral part of unmanned intelligent driving technology, high-precision maps have been widely used in the field of automotive intelligent driving. Different from traditional electronic maps, high-precision electronic maps serve unmanned vehicles; in addition to describing the basic in...

AI Technical Summary

Problems solved by technology

However, most of the existing 3D map display functions tend to display 3D buildings on both sides of the road, but cannot display the 3D roads that are crucial for simulating real roads to train intelligent driving cars.

[0005] Furthermore, map data suppliers generally process the original collected data into some intermediate format during map data processing. The conversion algorithm of this intermediate format is generally a core technology and will not be disclosed to vehicle developers. Acquisition of 3D road models for vehicle developers presents greater difficulties

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