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Video frequency object tracking method, device and automatic video frequency following system

A target tracking and target position technology, which is applied in the field of automatic video tracking system, video target tracking method and device, can solve the problems of negative impact of tracking effect, influence on the accuracy of feature calculation, inaccurate perimeter gradient, etc.

Inactive Publication Date: 2010-06-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the ellipse cannot accurately describe the outline of the human head, it is not accurate enough to calculate its perimeter gradient, and when calculating its color distribution function, the background image that does not belong to the human head will also be calculated, which will affect the feature calculation. accuracy, ultimately negatively impacting tracking performance

Method used

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  • Video frequency object tracking method, device and automatic video frequency following system
  • Video frequency object tracking method, device and automatic video frequency following system
  • Video frequency object tracking method, device and automatic video frequency following system

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Embodiment Construction

[0037] Embodiments of the present invention provide a video target tracking method, device and automatic video tracking system, which can improve the accuracy of target tracking. 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 with reference to the accompanying drawings and examples. Since the head target tracking is most typical with an ellipse shape as a template, the head target tracking is taken as an example to describe in detail below. However, the embodiments of the present invention are not limited to head target tracking, and can be used for other types of target tracking problems based on ellipses or corresponding regular shapes as templates, but the targets are not sufficiently regular.

[0038] Such as figure 1 As shown, it is a flowchart of a video target tracking method in one embodiment of the present invention, including the following processes:

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Abstract

The invention discloses a method for tracking a video target. The method comprises the following steps that: gradient vector flow (GVF) deformation is carried out to each candidate position in a current frame to obtain each deformation curve; the video characteristic of the deformation curve is calculated; according to the calculated video characteristic, a candidate position is determined as a target position. The invention also discloses a video target tracking device and an automatic video tracking system, which can improve the accuracy of target tracking.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a video target tracking method, device and automatic video tracking system. Background technique [0002] The so-called automatic video tracking is to use the image signal of the video to automatically detect, identify and locate the target, automatically control the movement of the pan / tilt and the camera, and track and lock the target. The process of video target tracking can be generally described as: the imaging system collects and records the images formed by the three-dimensional scenes of the objective world in the form of two-dimensional arrays and saves them in the computer. The computer analyzes and interprets the input image, and through preprocessing, feature extraction, feature selection, feature tracking and other algorithm processing, the obtained target information, including the structure, shape, color, position, movement speed and direction of the objec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/20H04N7/18
Inventor 左坤隆
Owner HUAWEI TECH CO LTD
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