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Target tracking method, device and recording and broadcasting system

A target tracking and target technology, applied in the field of computer vision, can solve the problem of inaccurate target position and false targets, and achieve the effect of avoiding illumination changes

Active Publication Date: 2021-07-30
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above scheme is based on visible light image modeling. If there is a sudden lighting change, for example, the teacher turns off the light while playing a presentation, in this case, false targets will be generated during the modeling process, and the determined position of the target will be inaccurate.

Method used

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  • Target tracking method, device and recording and broadcasting system
  • Target tracking method, device and recording and broadcasting system
  • Target tracking method, device and recording and broadcasting system

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Embodiment approach

[0194] As an implementation mode, this scheme may also include:

[0195] When the trajectory of the target is determined, the moving speed of the target is determined according to the moving trajectory of the target; when the moving speed is greater than a preset threshold, the first alarm information is output to the terminal connected to the host.

[0196] From the above description, it can be seen that the movement track of the target contains multiple positions, and each position corresponds to a moment, and the moving speed of the target can be determined according to each position in the movement track and its corresponding time. It is understandable that if the teacher's position is determined in the current image, but the teacher moves too fast, in this case, the close-up display of the teacher will make the close-up picture unclear. Therefore, if the moving speed of the target is too fast, the first alarm information is output to the host, and after receiving the fir...

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Abstract

The embodiment of the present invention discloses a target tracking method, a device, and a recording and broadcasting system. In the method, a three-dimensional point cloud corresponding to an image is obtained, and the position of the target in the image is determined based on the position information of the three-dimensional point in the three-dimensional point cloud, and the position of the target in the image does not need to be based on visible light. Image modeling to avoid inaccurate tracking caused by lighting changes. The system includes two terminals and a host. The two terminals use this method to determine target positions in images of different scenes, and the host displays images according to the target positions determined by the two terminals. That is, the system The image display is combined with the targets in different scenes, which improves the display effect.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a target tracking method, device and recording and broadcasting system. Background technique [0002] Schemes for tracking objects in images have been widely used. For example, in the teaching recording and broadcasting system, the image collected by the acquisition device can be analyzed and processed, the position of the teacher or student in the image can be determined, and the close-up display of the teacher or student can be realized according to the determined position. [0003] Specifically, the solution for determining the position of the teacher or student in the image usually includes: determining the target area in the image, the target area can be the podium area or the area where the students are; perform background modeling and motion detection on the target area, and determine Show the location of the teacher or student. [0004] The above scheme is based...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/00G06T7/20
CPCG06T2207/30196G06T2207/10028G06T3/06
Inventor 陈晨树童俊艳任烨
Owner HANGZHOU HIKVISION DIGITAL TECH
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