ZHAO Peng-peng, CUI Shao-hui, GAO Min etc. Object tracking based on affine transform and uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 776-782
ZHAO Peng-peng, CUI Shao-hui, GAO Min etc. Object tracking based on affine transform and uniform sampling[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 776-782 DOI: 10.3788/OPE.20152313.0777.
Object tracking based on affine transform and uniform sampling
A target tracking method based on the affine transformation and uniform sampling was proposed to solve the issues that targets may generate different geometric transformations such as scaling
rotating and beveling in the process of image tracking. Based on the particle filter algorithm
six affine parameters were set as the stable variables to predict likely deformation of the target. Then
the target modeling and candidate target modeling were constructed by uniform sampling in the affine parameter area. A similarity measuring function was selected for calculation of gray differences between two sampling sites to create a monitoring model
thus the optimal estimation of the state variables was obtained and then stable tracking of the target was realized. The simulation experiment demonstrates that the proposed method can stably track geometric deformation targets
and the deviation is less than 10 pixel. The robustness and accuracy of the method are definitely superior to that of traditional target tracking method as well as other tracking method based on affine transformation and feature modeling.
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references
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