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Moving target tracking method based on pyramid appearance model

A technology of appearance model and moving target, which is applied in the field of computer vision to ensure robust target tracking and robust tracking results.

Inactive Publication Date: 2014-04-09
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

The biggest challenge and difficulty of this task is how to effectively express the target, and most of the target expression is achieved by modeling the target appearance

Method used

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  • Moving target tracking method based on pyramid appearance model
  • Moving target tracking method based on pyramid appearance model
  • Moving target tracking method based on pyramid appearance model

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Embodiment Construction

[0023] 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 specific embodiments and with reference to the accompanying drawings.

[0024] The invention proposes a moving target tracking method based on a pyramid appearance model. The specific operating hardware and programming language of the method are not limited, and can be written in any language, so other working modes will not be repeated here. Preferably, a computer with a 3.2G Hz central processing unit and 4G byte memory can be used to compile a working program based on the pyramid appearance model for moving target tracking with Matlab language, so as to realize the above-mentioned method proposed by the present invention.

[0025] figure 1 The flow chart of the moving target tracking method based on the pyramid appearance model proposed by the present invention is shown. Such as figure ...

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Abstract

The invention discloses a moving target tracking method based on a pyramid appearance model. The method includes the steps of giving out the state and the observation of a target to be tracked in an initial frame, conducting pyramid appearance modeling on the tracked target through the pyramid segmentation and increment principle component analysis method, integrating texture information of the tracked target into the pyramid appearance model, integrating shape information of the tracked target into the pyramid appearance model, adding random perturbation to the tracked target in the state of the current frame so that the tracked target can serve as a particle of a next frame, conducting pyramid appearance modeling and comparison on the observation of the obtained particle and the observation of the target under the current frame, selecting the observation corresponding to the most similar particle as the state of the tracked target under the next frame, calculating reconstruction errors of all blocks from bottom to top layer by layer for the pyramid appearance model of the selected observation, comparing the reconstruction errors with a preset threshold value, and conducting appearance updating on the blocks with the construction errors smaller than the threshold value.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to appearance modeling technology in visual tracking (Visual tracking). Background technique [0002] Moving target tracking based on moving camera is one of the cutting-edge research directions in the field of computer vision in recent years, and it is also one of the difficulties in this field. The biggest challenge and difficulty of this task is how to effectively express the target, and most of the target expression is achieved by modeling the target appearance. Therefore, how to construct a good appearance model plays a crucial role in object tracking. Especially in time-series data streams, the appearance of objects changes over time and may be disturbed by various factors. In addition, it is necessary to meet the requirements of low computational complexity for practical applications. This poses a serious challenge to us, that is, how to construct a low-complexity, robust, a...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 胡卫明刘洋
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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