Scale-adaptive target object updating method and device

A scale-adaptive, target model technology, applied in the field of computer vision, which can solve the problems of tracking failure, tracking drift, and too late to change the scale

Active Publication Date: 2018-04-06
武汉沃德自动化技术有限公司
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Benefits of technology

The technical effect described by this patented technology can include improved efficiency or accuracy during certain processes such as manufacturing.

Problems solved by technology

The technical problem addressed by this patented method relating to improving the accuracy and reliability of trackers used on targets (such as missiles) is how to adjust their scales based upon changes caused by factors like temperature fluctuations or other environmental conditions over an extended period without causing any issues affecting its performance.

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  • Scale-adaptive target object updating method and device
  • Scale-adaptive target object updating method and device
  • Scale-adaptive target object updating method and device

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] Target scale adaptation has been a hotspot in target tracking research for many years. In order to solve the problem of target size change, many scholars have proposed effective scale adaptation schemes. As these schemes are continuously improved and developed, scale-adaptive schemes become more and more perfect. A scale adaptive scheme is proposed in the related art, which mainly extracts the tracking frame of the previous frame and templates 0.9 times and 1.1 times the size of the tracking frame of the previous frame to perform MeanShift tracking respectively, and calculates the distance between the three templates and the current update target. Bhattacharyya coeffi

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Abstract

The invention discloses a scale-adaptive target object updating method and device, and belongs to the field of computer vision. The method comprises the steps: determining an optimal image scale of atarget based on a scale pyramid; updating the target model of a next image frame of the target based on the optimal image scale when the target is not shielded. Because the scale pyramid has a largerscale range, the method can adapt to the severe changes of the target scale. The gray scale distribution features serve as the features used in the estimation of the target scale, and the features aremade into a statistical histogram according to the position and gray scale of target pixels. Because the method gives consideration to the position information of the target, the gray scale distribution features can reflect the characteristics of the target better than a grey level histogram, and can achieve the more accurate estimation of the sale through the features.

Description

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Claims

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Application Information

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Owner 武汉沃德自动化技术有限公司
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