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Moving target shielding and restoring method based on Steiner point

A technology of moving target and recovery method, applied in the field of video tracking

Inactive Publication Date: 2015-06-03
JIANGNAN UNIV
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  • Claims
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And the computational complexity of support function is O(n)

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  • Moving target shielding and restoring method based on Steiner point
  • Moving target shielding and restoring method based on Steiner point
  • Moving target shielding and restoring method based on Steiner point

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Embodiments of the present invention provide a method for recovering occlusion of a moving target based on the center of curvature (Steiner point), the method based on the Steiner point can quickly and accurately obtain the Steiner point information lost due to occlusion during the moving process of the target, thereby Steiner points can be used as object feature points for tracking and prediction, even if occlusion occurs during the process.

[0022] Please refer to figure 1 , which shows a flow chart of the Steiner point-based moving object occlusion recovery method in the present invention. The feature value extraction method 100 includes:

[0023] Step 102, on the basis of the original nature of the Steiner point, int...

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Abstract

The invention discloses a moving target shielding and restoring method based on a Steiner point. The method comprises the following steps: treating a moving target in a video, firstly, extracting the boundary of the moving target, and converting into a convex polygon which is easy to treat after convex-shell treatment and polygon approximation processes; calculating the offset vector of the moving target at the Steiner point by adopting a derived shielding conclusion, and combining with the Steiner point of a shielded region, so as to calculate the position of a characteristic point-Steiner point of the moving target, and thus, the problem of shielding is solved. The shielding of the target in the movement process is realized by adopting the method based on a curvature center; and the center of the target is accurately restored, so that the moving track of an object can also be accurately predicted even if the shielding appears, and the characteristic center of the object is restored.

Description

【Technical field】 [0001] The invention relates to the field of video tracking, in particular to a method for occlusion restoration of a moving target based on the center of curvature (Steiner point). 【Background technique】 [0002] Occlusion is a problem that often occurs during the movement of the target. It is the main factor affecting the tracking performance, and it is also one of the difficulties faced by the research on the motion analysis and prediction of moving targets. The detection and tracking of moving targets based on feature points is an important part of computer vision research, and it has a wide range of applications in aerospace, intelligent robots, automatic monitoring systems, medical image analysis, and video compression. The feature points can represent the local or global information of the moving object, and can well reflect the running information of the object. [0003] A Steiner point is a feature point of an object. The Steiner point is conside...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/20
Inventor 狄岚徐永存梁久祯
Owner JIANGNAN UNIV
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