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Target tracking method and device

A target tracking and target technology, applied in the field of target tracking, can solve the problems of difficulty in obtaining tracking effect and large color dependence, and achieve the effect of effective target tracking and improved stability.

Inactive Publication Date: 2009-11-11
VIMICRO CORP
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  • Description
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Problems solved by technology

[0003] In the prior art, the target tracking algorithm is based on the color histogram (color feature) of the moving target, but because this method is highly dependent on the color, it is generally only applicable to environments with relatively stable lighting. In the case of complex illumination changes, it is difficult to achieve good tracking effect

Method used

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  • Target tracking method and device
  • Target tracking method and device

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Embodiment Construction

[0062] In the embodiment of the present invention, in order to improve the stability of the target tracking algorithm to illumination changes, a feature invariant to illumination (ie illumination robustness feature) is used to strengthen the target model. Wherein, the illumination robustness feature may include Haar feature or LBP feature and the like.

[0063] 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.

[0064] figure 1 It is an exemplary flow chart of the object tracking method in the embodiment of the present invention. like figure 1 As shown, the process includes the following steps:

[0065] Step 101, acquire the initial position of the target, and determine the initial area where the target is located according to the initial position.

[0066] Among them, the initial position of the targe...

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Abstract

The invention discloses a target tracking method which comprises the steps of: obtaining the initial position of a target and confirming the initial area at which the target locates according to the initial position; calculating a color histogram and an illumination robustness feature histogram of the initial area at which the target locates; utilizing the color histogram and the illumination robustness feature histogram for expressing a target model of the target; and searching the optimal position of the target from the current images according to the target model. In addition, the invention also discloses a target tracking device. The technical proposal disclosed by the invention can improve the stability of the target tracking algorithm to the illumination change.

Description

technical field [0001] The invention relates to target tracking technology, in particular to a target tracking method and a target tracking device. Background technique [0002] Target tracking technology refers to calculating the two-dimensional position coordinates of the target on each frame of image by analyzing the video stream or image sequence, and according to different characteristics, correlating the same moving target in different frames of images to obtain the The complete trajectory of the target. [0003] In the prior art, the target tracking algorithm is based on the color histogram (color feature) of the moving target, but because this method is highly dependent on the color, it is generally only applicable to environments with relatively stable lighting. In the case of complex illumination changes, it is difficult to achieve good tracking results. Contents of the invention [0004] In view of this, the present invention provides an object tracking method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 王磊
Owner VIMICRO CORP
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