Cast Shadow Removal in a Hierarchical Manner Using MRF

CASIA OpenIR > 智能感知与计算研究中心

	Cast Shadow Removal in a Hierarchical Manner Using MRF
	Liu, Zhou; Huang, Kaiqi; Tan, Tieniu
发表期刊	IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY
	2012
卷号	22 期号:1 页码:56-66
文章类型	Article
摘要	In this paper, we present a novel method for shadow removal using Markov random fields (MRF). In our method, we first construct the shadow model in a hierarchical manner. At the pixel level, we use the Gaussian mixture model to model the behavior of cast shadows for every pixel in the HSV color space. The samples which are used to update the shadow model should satisfy a pre-classifier. This pre-classifier indicates the color feature of shadow in current frame. At the global level, we exploit the statistical features of shadow in the whole scene over several consecutive frames to make this pre-classifier accurate and adaptive to the change of shadow. Then, based on the shadow model, an MRF model is constructed for shadow removal. The main contribution of this paper is twofold. First, although our method is a chroma-based method, we make the pre-classifier accurate and adaptive to the change of shadow by using the statistical features of shadow at the global level. Moreover, tracking information can make this global-level statistical information more robust. Second, we construct an MRF model to represent the dependencies between the label of a pixel and the shadow models of its neighbors. Experimental results show that the proposed method is efficient and robust.
关键词	Markov Random Fields Robust Estimation Shadow Removal Tracking
WOS标题词	Science & Technology ; Technology
关键词[WOS]	SEGMENTATION
收录类别	SCI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000298994300005
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/3785
专题	智能感知与计算研究中心
作者单位	Chinese Acad Sci, Natl Lab Pattern Recognit, Inst Automat, Beijing 100190, Peoples R China
第一作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Liu, Zhou,Huang, Kaiqi,Tan, Tieniu. Cast Shadow Removal in a Hierarchical Manner Using MRF[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY,2012,22(1):56-66.
APA	Liu, Zhou,Huang, Kaiqi,&Tan, Tieniu.(2012).Cast Shadow Removal in a Hierarchical Manner Using MRF.IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY,22(1),56-66.
MLA	Liu, Zhou,et al."Cast Shadow Removal in a Hierarchical Manner Using MRF".IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 22.1(2012):56-66.