Method for tracking particle filter video motion target based on particle position adjustment
A moving target and particle filter technology, which is applied in the field of moving target tracking and image processing, can solve the problems of large tracking error and poor real-time tracking
Active Publication Date: 2012-02-01
菏泽建数智能科技有限公司
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[0004] In order to overcome the shortcomings of the existing particle filter target tracking method that the tracking real-time performance is poor when the number of particles is large, and the tracking error is large when the number of particles is small, the present invention provides a method with good accuracy when the number of particles is small. Particle Filter Video Moving Target Tracking Method Based on Particle Position Adjustment and Real-time Performance
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[0047] The present invention will be further described below in conjunction with accompanying drawing.
[0048] refer to figure 1 , a particle filter video moving target tracking method based on particle position adjustment, firstly, according to the moving target detection results, the target center and the range of the target are determined. Then enter the target tracking process, including the following steps:
[0049] In the first step, before the target is tracked, the initial position of the target is determined by the target detection algorithm. Then, according to the center coordinate position (x, y) of the target and the range of the target (target width block_width, target height block_height), calculate the target accumulative histogram accu_histogram, that is, the initialization of the accumulative histogram.
[0050] The initial position of each particle is obtained according to the randomized diffusion of the center position of the target in the direction of th...
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The invention discloses a method for tracking a particle filter video motion target based on particle position adjustment. In the method, after particle weight is obtained by calculating, the weight is resorted; if the weight is smaller than the designated weight threshold, coordinates of the particles are adjusted to be close to a target center; and after new particle distribution is obtained, the particle weight is recalculated to obtain a final target center point and realizing the tracking of the motion target. The method comprises the following steps of: firstly, accumulating a column diagram and initializing particles; secondly, updating the target range; thirdly, calculating the weight of the particle; fourthly, sorting the weight; fifthly, adjusting the position of the particle; sixthly, recalculating the weight of the particle; seventhly, estimating the target position; and eighthly, updating the accumulated column diagram. According to the method, better tracking effect can be obtained at lower particle population and the tracking efficiency and tracking precision can be improved.
Description
technical field [0001] The invention relates to the field of image processing, in particular to the field of video sequence moving target tracking, and in particular to a moving target tracking method. Background technique [0002] At present, with the rapid development of video surveillance technology, video moving target tracking technology has become one of the hot topics of research. It integrates advanced technologies in many fields such as pattern recognition, artificial intelligence, and image processing. Video moving target tracking analyzes the image sequence obtained by the camera to obtain the motion parameters of the target, and feeds back to the tracking system to provide the basis and basis for the analysis and understanding of the video sequence. Moving target tracking is an important part of the tracking system, and its accuracy directly affects the accuracy of high-level video sequence analysis and understanding. [0003] The particle filter tracking algori...
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IPC IPC(8): G06K9/00G06T7/20
Inventor 宦若虹唐晓梅王浙沪陈庆章
Owner 菏泽建数智能科技有限公司