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Target tracking method and device based on video

A target tracking and target technology, which is applied in the field of target tracking in video based on multi-cue fusion, can solve the problems of unstable tracking and cannot effectively handle multiple peaks, and achieve the effect of improving stability.

Inactive Publication Date: 2012-05-09
ZHEJIANG UNIV
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Problems solved by technology

However, it only specifies that the tracking target is the human head, which has certain limitations, and the search method based on the genetic algorithm only finds the candidate target most similar to the target, which often cannot effectively deal with the "multi-peak" situation in the image, such as temporary occlusion etc., causing tracking instability

Method used

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  • Target tracking method and device based on video
  • Target tracking method and device based on video
  • Target tracking method and device based on video

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Embodiment Construction

[0038] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0039] The video-based target tracking method of the present invention mainly includes the following implementation steps:

[0040] Step 10. Establish the feature template of the target and initialize the feature set

[0041] The tracking target can use human-computer interaction to specify the area in the video, or automatically obtain the tracking area according to the moving target detection of the video. Suppose the target is a center (x 0 ,y 0 ), a rectangular area whose length and width are m and n respectively, but is not limited to a rectangular area, and can be in any shape. Based on these prior knowledge, the feature template of the target is established and the set of target particles is initialized. The specific implementation steps are as follows:

[0042] Step 11. Create a weighted histogram template for the target

[0043] ...

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Abstract

The invention discloses a video target tracking method which is based on multi-cue integration and particle filtration and a device thereof. The method carries out the self-adaptive integration according to three cues of color, edge and feature points to obtain target observation information, then the particle filtration technology is used for updating the target state, and the specific steps comprise: A. a target template is extracted and target parameters are initialized; B. dynamic prediction is carried out on a particle set according to a motion model; C. the particle weight is updated according to multi-cue integration information; D. the motion state of a target is updated. The video target tracking method and the device can improve the tracking effect and the tracking stability of the moving target under the complex environment and the tracked target can comprise human heads, pedestrians, cars, etc.

Description

technical field [0001] The invention belongs to the technical field of computer vision and pattern analysis in signal processing, and in particular relates to a method and device for tracking a target in video based on multi-cue fusion. Background technique [0002] Target tracking was first used in military affairs. Recently, with the development of video technology, target tracking in video has become a popular research topic. It is one of the core topics in the field of computer vision research, the basis for more advanced video applications such as behavior recognition and video retrieval, and an important part of intelligent video surveillance. [0003] A key step in target tracking is data association, how to use the most effective clues to express and describe the target is the key. At present, the main clues are weighted color histogram, color wavelet feature, feature point feature and binary shape template. However, most of the traditional tracking methods are bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/20
Inventor 刘云海全晓臣谢宝磊
Owner ZHEJIANG UNIV
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