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Vol. 163, Issue 1, January 2014, pp. 74-81




Multi-class Video Objects Segmentation Based on Conditional Random Fields

1, 2 Zhiwei HE, 1 Lijun XU, 1 Wei ZHAO, 1 Mingyu GAO

1 College of Electronic and Information Engineering, Hangzhou Dianzi University, Xiasha Higher Education Zone, 310018, China
2 School of Information Engineering, Hangzhou Dianzi University, Xiasha Higher Education Zone, 310018, China
1 Tel.: (86) 0571-86919153, fax: (86) 0571-86919153

1 E-mail: zwhe@hdu.edu.cn


Received: 22 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems


Abstract: Video object segmentation has been widely used in many fields. A conditional random fields (CRF) model is proposed to achieve accurate multi-class segmentation of video objects in the complex environment. By using CRF, the color, texture, motion characteristics and neighborhood relations of objects are modeled to construct the corresponding energy functions in both the temporal and spatial domains. The model is trained with annotated samples by using LogitBoost classifier. The energy function is amended by adding a constraint factor which is used to indicate the interaction between two adjacent images in the video sequence. Experimental results show that the proposed algorithm can achieve high performance for multi-class objects segmentation in videos under complex environment. It can also get good recognition results when dealing with multi-viewed objects or serious sheltered objects.


Keywords: Video object segmentation, Conditional random fields model, LogitBoost classifier, Constraint factor.


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