Multi-target tracking method based on track association

A multi-target tracking and trajectory association technology, applied in the field of image processing, can solve problems such as wrong trajectory association

Active Publication Date: 2015-09-16
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that when there is interaction between targets with similar appearances in complex scenes, it is easy to cause wrong trajectory association, and proposes a multi-target tracking method based on trajectory association. Adaptive Local Trajectory Generation Method

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  • Multi-target tracking method based on track association
  • Multi-target tracking method based on track association
  • Multi-target tracking method based on track association

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Embodiment Construction

[0043] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0044] Such as Figure 4 As shown, the present invention provides a multi-target tracking method based on trajectory association, which includes: first, the scene adaptive local trajectory generation method can adaptively select appropriate features to represent the target, and reduce the target representation by feature fusion ambiguity; secondly, using the appearance model based on incremental linear judgment can effectively reduce the amount of calculation, and can effectively solve the recognition problem of the target under significant deformation, appearance change and long-term occlusion; at the same time, using the nonlinear The trajectory filling strategy of the motion model can effectively solve the problem of not satisfying the correlation between linear motion trajectories, so as to generate smoother and continuous tracking trajectories.

[0045] Step 1:...

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Abstract

The invention discloses a multi-target tracking method based on track association. The method comprises the following steps: to begin with, generating a local track based on a scene self-adaption method and realizing association of detection responses and original tracks; then, realizing global track association based on an appearance model of increment linear discriminant; and finally, realizing vacancy filling between track fragments to obtain a complete and smooth tracking track based on a nonlinear motion model. The method can realize correct association of multiple targets under complex conditions of target occlusion, similar appearance characteristics of different targets and abrupt change of direction of a moving target and the like; and finally, a stable and continuous tracking track can be obtained.

Description

technical field [0001] The invention relates to a multi-target tracking method, in particular to a trajectory correlation-based multi-target tracking method, which belongs to the technical field of image processing. Background technique [0002] The multi-target tracking algorithm based on trajectory association is a research hotspot of scholars at home and abroad. Its main principle is to establish associations between multiple short tracking segments of the tracking target to obtain continuous and smooth tracking trajectories of the tracking target. The key of multi-target tracking algorithm is how to measure the similarity between trajectories. [0003] In complex scenes, when there are interactions between objects with similar appearances, it is easy to lead to wrong trajectory associations. This requires that the multi-target tracking algorithm can not only accurately track the emerging targets, but also maintain the continuity of the original tracking targets. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
CPCG06T7/251G06T2207/10016
Inventor 朱松豪师哲胡学伟
Owner NANJING UNIV OF POSTS & TELECOMM
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