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Multi-scale vehicle tracking method and device based on road texture context information

A vehicle tracking, multi-scale technology, applied in the field of computer vision, can solve the problem of low accuracy of target vehicle position, achieve the effect of large overlap rate, high accuracy and prevent drift

Active Publication Date: 2021-08-13
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a multi-scale vehicle tracking method and device based on road surface texture context information to solve the problem of low accuracy of the target vehicle position in the above-mentioned background technology

Method used

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  • Multi-scale vehicle tracking method and device based on road texture context information
  • Multi-scale vehicle tracking method and device based on road texture context information
  • Multi-scale vehicle tracking method and device based on road texture context information

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Embodiment 1

[0102] A multi-scale vehicle tracking method based on road surface texture context information, including: a space road texture context correlation filter tracking method, wherein the space road texture is divided into a linear space road texture and a nonlinear space road texture, and the specific method is as follows:

[0103] S1. For the case of linear space road texture, obtain the center position of the target vehicle;

[0104] Use the least squares method to process several background areas of the target vehicle to obtain the ridge regression formula. The least squares method is a common algorithm in machine learning and will not be introduced here; among them, several background areas include road texture areas;

[0105] Takes into account the area of ​​the road below the target vehicle as well as information from other directions around it, such as figure 1 as shown, figure 1 is a schematic diagram of the relative relationship between the target vehicle area and the s...

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Abstract

The present invention relates to a multi-scale vehicle tracking method based on road texture context information, comprising: S1, for the case of linear space road texture, obtaining the center position of the target vehicle, S2, for the case of nonlinear space road texture, obtaining the center position of the target vehicle in the dual space Acquire the center position of the target vehicle; S3. After acquiring the center position of the target vehicle, combine it with the image optimal scale of the current frame to obtain a more accurate target vehicle position; Scale vehicle tracking device. The present invention combines the road surface texture area at the bottom of the target vehicle. During the movement of the target vehicle, the relative position between the target vehicle and the road surface will not change greatly, and the road surface texture is relatively stable. The relative relationship of the target vehicle can be precisely positioned to prevent the target frame from drifting.

Description

technical field [0001] The invention relates to the field of computer vision, and more particularly to a multi-scale vehicle tracking method and device based on road surface texture context information. Background technique [0002] Machine learning (Machine Learning, ML) is a multi-field interdisciplinary subject, involving probability theory, statistics, approximation theory, convex analysis, algorithm complexity theory and other disciplines, and target tracking is an important application in the field of machine learning. [0003] The invention patent with the publication number "CN108776974B" (the application date is 2018.05.24) discloses "a real-time target tracking method suitable for public transportation scenarios. The initial position P(i) on the current i-th frame; Step 2, use P(i) to train the correlation filter tracker; Step 3, obtain the image of the target in the i+1th frame; Step 4, use the correlation filter and the Correlation calculations are performed on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/246G06T7/262G06T7/277G06T7/41
CPCG06T2207/10004G06T7/246G06T7/262G06T7/277G06T7/41
Inventor 孔斌赵富强杨静王灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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