NDLI: Orthogonal Functional Expansion Method of Optical Flow for Large Displacement

Content Provider	IEEE Xplore Digital Library
Author	Jinwoo Kim Close, R. Taketani, H. Rong-Long Wan Okazaki, K. Tamura, S.
Copyright Year	2009
Abstract	One of the representative methods of optical flow is a gradient method which estimates the movement of an object based on the differential of image brightness. However, the method is ineffective for large displacement of the object and many improved methods have been proposed to copy with such limitations. One of these improved techniques is the multigrid processing, which is used in many optical flow algorithms. As an alternative novel technique we have been proposing an orthogonal functional expansion method, where whole displacements are expanded from low frequency terms. This method is expected to be applicable to flow estimation with large displacement and deformation including expansion and contraction, which are difficult to cope with by conventional optical flow methods. In this paper, we apply our method to several real images in which the objects undergo large displacement and/or deformation including expansion.
Starting Page	479
Ending Page	482
File Size	466004
Page Count	4
File Format	PDF
ISBN	9781424447176
DOI	10.1109/IIH-MSP.2009.241
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-12
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image motion analysis Gradient methods Biomedical optical imaging Multigrid methods Brightness Integral equations Transforms Frequency Optical noise Optical signal processing
Content Type	Text
Resource Type	Article

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