Feature extraction method and device, vehicle orientation determination method and vehicle-mounted terminal

Abstract

The embodiment of the invention discloses a feature extraction method and device, a vehicle orientation determination method and a vehicle-mounted terminal. The method comprises the following steps: determining the width-to-height size ratio of a to-be-detected vehicle according to the relative position relationship between a vehicle area and a license plate area; extracting a feature map of the vehicle area through a feature extraction layer in the vehicle structure line detection model; through a regression layer in the vehicle structure line detection model, carrying out regression the feature map according to the aspect ratio, and determining structure line information of the to-be-detected vehicle in the vehicle area; determining orientation information corresponding to the structuralline information as orientation information of the to-be-detected vehicle according to a preset corresponding relationship between the orientation information and the structural line information; wherein each feature vector of the feature map is obtained by superposing attention factors; wherein the attention factors are determined according to the similarity between the feature vectors and global semantic features of all the feature vectors in the semantic group. By applying the scheme provided by the embodiment of the invention, the orientation information of the vehicle can be determined more accurately.

Description

technical field [0001] The present invention relates to the technical field of intelligent driving, in particular to a feature extraction method and device, a vehicle orientation determination method, and a vehicle-mounted terminal. Background technique [0002] With the development of science and technology, emerging concepts such as intelligent driving and unmanned vehicles have emerged as the times require. High-precision vehicle detection, recognition, and tracking estimation are important elements in road scene analysis and environmental perception, and are also an indispensable part of the field of intelligent driving. Estimating the vehicle orientation of surrounding vehicles is an important part of perception technology. In addition to determining the vehicle orientation of surrounding vehicles in the field of intelligent driving, it will also be used in other fields, such as road monitoring. [0003] In the related technology, the road image including the vehicle ...

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Problems solved by technology

However, this method of determining vehicle orientation is susceptible to interference from background informat

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