A Robust Target Tracking Method Based on Local Sparse Representation and Particle Swarm Optimization

A particle swarm optimization and target tracking technology, applied in the field of robust target tracking, which can solve the problems of occlusion, interference effects of similar objects in moving background, etc.

Active Publication Date: 2020-07-14
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] In order to avoid the deficiencies of the existing technology, the present invention proposes a robust target tracking method based on local sparse representation and particle swarm optimization, which solves the problems of illumination changes, occlusion, deformation, and complex moving background similarities in the process of visual target tracking. Interfering effects of objects, etc.

Method used

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  • A Robust Target Tracking Method Based on Local Sparse Representation and Particle Swarm Optimization
  • A Robust Target Tracking Method Based on Local Sparse Representation and Particle Swarm Optimization

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Embodiment Construction

[0044] The present invention will now be further described in conjunction with the embodiments and accompanying drawings:

[0045] Based on the determination of the target position in the first frame, the present invention firstly obtains several target templates by sampling near the initial frame target, and constructs a dictionary for sparse representation. Then, candidate target sampling is performed by particle filtering guided by the particle swarm optimization algorithm. Then the candidate target is sparsely represented, and the representation coefficient is obtained by solving. Finally, the optimal candidate target is obtained as the tracking result. The specific steps are as follows, and the process can refer to the accompanying drawings.

[0046] 1) Read the first frame of image data and the parameters [x, y, w, h] of the target in the first frame of image, where x, y represent the center position of the target, and w, h represent the width and height of the target....

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Abstract

The invention relates to a local sparse representation and particle swarm optimization-based robust target tracking method. The method comprises the steps of firstly, performing sampling near an initial frame to obtain a plurality of template blocks, and constructing a dictionary used for sparse representation by utilizing local and structure information of a target; secondly, performing particle filtering on each frame after the initial frame to generate a plurality of particles, wherein each particle represents a candidate target; thirdly, performing sparse representation on each candidate target, and representing the fitness of each particle with a sparse representation coefficient obtained by solving; and finally, taking the particle with the highest fitness, namely, the candidate target with the highest fitness obtained by particle swarm optimization solving as a tracking result.

Description

technical field [0001] The invention belongs to a method for using digital images for target identification, and relates to a robust target tracking method based on local sparse representation and particle swarm optimization. Background technique [0002] Object tracking is a fundamental problem in the field of computer vision, and it has a wide range of applications, including video surveillance, behavior analysis, motion temporal analysis, and video retrieval. Target tracking is a challenging subject because targets will face problems such as illumination changes, occlusion, deformation, and complex moving backgrounds during the tracking process, which often lead to target loss and drift. [0003] In the past two years, the target tracking method based on the sparse representation theory has received great attention. This method transforms the target tracking problem into a sparse solution problem, and has achieved good results, providing a new solution idea for the target...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/246G06T7/277
CPCG06T7/20G06T2207/10016
Inventor 李映薛希哲胡晓华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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