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A psr-based visual tracking error correction method

An error correction and visual tracking technology, applied in the field of computer vision and visual tracking, can solve problems such as incompetence for long-term tracking tasks, sample contamination, etc., and achieve the effect of improving practicability and use effect, improving accuracy, and improving visual tracking accuracy

Active Publication Date: 2022-03-15
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] Although the visual target tracking technology has developed rapidly in recent years, the current visual target tracking is only a short-term tracking and cannot be used for long-term tracking tasks.
Therefore, problems such as model drift and sample contamination during the tracking process are still issues that need to be studied.

Method used

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  • A psr-based visual tracking error correction method
  • A psr-based visual tracking error correction method
  • A psr-based visual tracking error correction method

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Embodiment Construction

[0047] As shown in the figure, the present invention discloses a PSR-based visual tracking error correction method.

[0048] Specifically, a PSR-based visual tracking error correction method includes the following steps:

[0049] S1. Calculate the correlation filter H of the first frame using the features and groundtruth values ​​in the target state given in the first frame base .

[0050] S2. Limiting the scope of error correction, that is, limiting the scope of tracking error correction.

[0051] S3. Assuming the moment when the target state is evaluated for the first time as x, calculate its PSR index in the time domain, the calculation formula is

[0052]

[0053] For the video moment belonging to the correction range, assuming k, calculate its PSR index in the time domain, the calculation formula is,

[0054]

[0055] Among them, r is the response value, max represents the maximum value, mean represents the average value, and std represents the standard deviation. ...

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Abstract

The present invention discloses a visual tracking error correction method based on PSR, which includes the following steps: S1, calculate the correlation filter of the first frame; S2, limit the scope of implementing error correction; S3, calculate and; S4, combine and Comparing; S5, extracting the features of the target in the new state; S6, repeating the above steps to complete subsequent detection and correction. When situations such as object occlusion, viewing angle change, target deformation, and surrounding illumination change occur, the method of the present invention can judge the state estimation in the subsequent tracking and detection process by using the correlation filter obtained from the first frame training, if the first If the frame has a higher reliability than the filter being used in the current frame, the first frame is used for state estimation, thereby reducing the probability of errors in the visual tracking process and improving the accuracy of visual tracking.

Description

technical field [0001] The invention relates to a visual target tracking adjustment method, in particular to a PSR-based visual tracking error correction method, and belongs to the technical field of computer vision and visual tracking. Background technique [0002] Visual object tracking is a task of great research value in computer vision. Its main applications include unmanned driving, intelligent security, intelligent transportation, etc. However, due to the problems of rotation, occlusion, rapid change, motion blur and complex background of the target appearance during the tracking process, the visual tracking technology is difficult in practical applications. [0003] At present, the commonly used visual target tracking methods are divided into two categories, generative tracking methods and discriminative tracking methods. The previous tracking methods were mainly generative: for example, the ASLS tracker proposed a target tracking method based on the structural loc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/246G06T7/262
CPCG06T7/246G06T7/262G06T2207/20081G06T2207/20056G06T2207/10016
Inventor 王彩玲徐烨超荆晓远
Owner NANJING UNIV OF POSTS & TELECOMM
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