NDLI: An adaptive smoothness constraint for computing optical flow on sequences of cardiac images

Content Provider	IEEE Xplore Digital Library
Author	Marzani, F. Legrand, L. Dusserre, L.
Copyright Year	1995
Description	Author affiliation: Inf. Med., Fac. de Med., Dijon, France (Marzani, F.; Legrand, L.; Dusserre, L.)
Abstract	Different algorithms are available for processing an optical flow field between two successive frames. In most situations, two constraints are necessary to estimate such a displacement vector field. The first constraint is based on the gray level variations. The second one is usually based on the smoothness of the flow field. Unfortunately, the results of these constraints are not really adapted to the movements of the ventricle. Here, the authors propose a new method specifically adapted to sequences of cardiac images, for processing the optical flow. They calculate the amplitude image of a sequence of images by the Fourier transform. Unlike methods which identically smooth the optical flow in each direction, the authors developed a Fourier adaptive smoothness method which restricts the variation of the flow field in the directions with small variations of the Fourier amplitude. Moreover, the authors have generalized this method to sequences of non-cyclic images.
Starting Page	569
Ending Page	572
File Size	558957
Page Count	4
File Format	PDF
ISBN	0780330536
DOI	10.1109/CIC.1995.482728
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-09-10
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical computing Adaptive optics Image motion analysis Biomedical optical imaging Fourier transforms Brightness Image analysis Pixel Design for disassembly Biomedical imaging
Content Type	Text
Resource Type	Article

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