Map matching method and device, and equipment and medium
A map matching and quality technology, applied in the field of navigation, can solve problems such as road network attribute errors, map matching accuracy drop, vehicle coordinate sequence offset, etc., to achieve high accuracy and improve accuracy
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Embodiment 1
[0032] figure 1 It is a flowchart of a map matching method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of determining the road section matching the current driving trajectory based on the road network, where there is an error in the location data of the road section in the road network. The method can be executed by a map matching device, and the device can be realized by software and / or hardware. see figure 1 , the map matching method provided in this embodiment includes:
[0033] S110. Correct the road section position data in the road network according to the historical driving trajectory.
[0034] Wherein, the historical driving trajectory is the driving trajectory of at least one user at historical moments. A driving trajectory is a trajectory point sequence comprising at least two trajectory points. The track points are collected by the positioning system of the vehicle or the terminal. Specifically, the histori...
Embodiment 2
[0085] figure 2 It is a flow chart of a map matching method provided in Embodiment 2 of the present invention. This embodiment is an optional solution proposed on the basis of the foregoing embodiments. see figure 2 , the map matching method provided in this embodiment includes:
[0086] S210. Correct the road section location data in the road network according to the historical driving trajectory.
[0087] S220. Match the road sections and historical driving trajectories in the road network before correction, and the road sections and historical driving trajectories in the road network after correction, respectively, and determine the historical driving trajectory matching the road sections in the road network before correction and the corrected The historical driving trajectories matched by road segments in the road network.
[0088] S230. Compare the historical driving trajectory matching the road section in the road network before correction with the historical drivi...
Embodiment 3
[0098] Figure 3a It is an implementation block diagram of a map matching method provided by Embodiment 3 of the present invention. This embodiment is an optional solution proposed on the basis of the above-mentioned embodiments, taking a large number of historical driving trajectories as an example. see Figure 3a , the map matching method provided in this embodiment includes:
[0099] Based on the Hidden Markov Model (HMM) algorithm, the road sections of the current road network are matched with the massive historical driving trajectories, and the matching road sections of the current road network with massive historical driving trajectories are produced.
[0100] see Figure 3b As shown, each road segment 301 in the current road network is traversed, and the actual position 303 of the road segment 301 is learned by using the historical driving trajectory 302 matching the road segment 301 . According to the actual location of each road section, a trajectory distribution ...
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