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| Object Tracking MethodBased on Incrementally Updating Linear Discriminant Subspace |
| QIAN Cheng,XU Shu-Chang,ZHANG Yin, ZHANG San-Yuan |
| College of Computer Science and Technology,Zhejiang University,Hangzhou 310027 |
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Abstract A method for object tracking is presented to track objects steadily based on incremental linear discriminant analysis. The locations and poses of the object are represented by a set of affine parameters. Resorting to a state transition model, a group of image samples are predicted as candidates of the image patches of the object in the next frame. Their likelihoods of being the object image patch are measured after they are projected into a linear discriminant subspace. Then a sample with maximum likelihood is regarded as the object image patch. Finally, sufficient spanning sets of total scatter matrix and between-class scatter matrix are rotated to update projection matrix for maintaining the discrimination power of the subspace. Experimental results show that the method is robust to variation in appearances of objects and surrounding background, and it is available in affine invariant tracking.
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Received: 15 January 2009
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2010, Vol. 23 
