Method for video tracking of video monitoring equipment and video monitoring equipment
A technology of video monitoring and equipment, applied in the field of video tracking, can solve the problems of low effectiveness, easy drift to the background, easy deformation of tracking objects, etc., and achieve the effect of improving effectiveness
Active Publication Date: 2014-05-21
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology
The inventor found in practice that during the PTZ tracking process, due to the angle change of the PTZ camera and the non-rigid nature of the tracking object, the tracking object is prone to deformation, and due to the complex background, the tracking bounding box tends to drift to the background. That is, taking part of the background as part of the video object leads to failure of the tracking process and low effectiveness
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.
[0029] In PTZ video tracking, due to the large changes in the environment of the video target (background change) and the change of the video target itself (target deformation), the present invention combines motion information into the video tracking solution, and uses the motion information as a priori information to distinguish the tracked video object from the background to improve the effectiveness of video tracking.
[0030] The idea of the present invention is: the position information of the tracked video target in the last adjacent frame is known, that is, the position information of the circumscribed frame in the last adjacent frame is known; then, video tracking is performed in combination with the motion information to obtain The posi...
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The invention discloses a method for video tracking of video monitoring equipment and the video monitoring equipment. The method includes: obtaining an image of frame difference between a current frame and a previous adjacent frame of a video target; selecting an angular point in a movement area of the image of frame difference, a position coordinate set of the angular point being expressed as Ht-1; determining the position coordinate set of the selected angular point in the current frame, the position coordinate set being expressed as Ht; removing position coordinates of a false image in Ht, and obtaining Ht'; determining a circumscribed frame containing all position coordinate points in Ht'; obtaining position coordinates of the circumscribed frame of the current frame through calculation by determined circumscribed frame angular point coordinates and circumscribed frame angular point coordinates obtained through calculation by an original tracking algorithm; and displaying the circumscribe frame on a video image of the current frame through the position coordinates of the circumscribed frame obtained by calculation. The scheme in the invention can improve validity of video tracking.
Description
technical field [0001] The invention relates to video tracking technology, in particular to a method for video monitoring equipment to perform video tracking and the video monitoring equipment. Background technique [0002] The video tracking of video surveillance equipment is PTZ (Pan / Tilt / Zoom) tracking. PTZ tracking means that the pan / tilt of video surveillance equipment performs target tracking through omnidirectional (up and down, left and right) movement and lens zoom and zoom control. PTZ tracking is an application of single target video tracking. [0003] Single-target video tracking means that in a video sequence, the position and size information of the video target in the first frame is known, and a certain tracking algorithm is used to continuously output the position and size information of the video target in subsequent sequences. There are many kinds of algorithms for single-target video tracking, and the classic ones include feature point tracking, particle ...
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IPC IPC(8): G06T7/00G06T7/20
Inventor 王超全晓臣任烨蔡巍伟
Owner HANGZHOU HIKVISION DIGITAL TECH