Dr. Haisu Zhang Profile

Dr. Haisu Zhang

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Proceedings Article | 10 April 2018 Paper

Object recognition in images via a factor graph model

Yong He, Long Wang, Zhaolin Wu, Haisu Zhang

Proceedings Volume 10615, 1061517 (2018) https://doi.org/10.1117/12.2303409

KEYWORDS: Object recognition, Visualization, Detection and tracking algorithms, Machine learning

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Object recognition in images suffered from huge search space and uncertain object profile. Recently, the Bag-of- Words methods are utilized to solve these problems, especially the 2-dimension CRF(Conditional Random Field) model. In this paper we suggest the method based on a general and flexible fact graph model, which can catch the long-range correlation in Bag-of-Words by constructing a network learning framework contrasted from lattice in CRF. Furthermore, we explore a parameter learning algorithm based on the gradient descent and Loopy Sum-Product algorithms for the factor graph model. Experimental results on Graz 02 dataset show that, the recognition performance of our method in precision and recall is better than a state-of-art method and the original CRF model, demonstrating the effectiveness of the proposed method.

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