Patent ID: 11887376
Assignee: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method of estimating a road condition, comprising:
acquiring, for a first preset duration before a first moment, a sequence of user tracks for a road and a sequence of road images for the road;
extracting a track-related feature of the road from the sequence of the user tracks, and extracting an image-related feature of the road from the sequence of the road images; and
inputting the track-related feature of the road and the image-related feature of the road into a pre-trained road condition estimation model, so as to determine, for a second preset duration after the first moment, a road condition information of the road by using an estimated result of the road condition estimation model,
wherein the track-related feature includes a speed feature;
the image-related feature includes at least one of a road empty-degree feature, a traffic flow feature and a building feature; and
the extracting an image-related feature of the road from the sequence of the road images comprises:
recognizing a building area from each road image in the sequence of the road images, by using a pre-trained image semantic segmentation model; and
calculating a similarity mean and/or a similarity variance of building areas of adjacent road images in the sequence of the road images, as the building feature of the road.