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- A breakthrough in interactive teaching of multi-scale methods for image analysis
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Part of the book series: Computational Imaging and Vision (CIVI, volume 27)
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Many approaches have been proposed to solve the problem of finding the optic flow field of an image sequence. Three major classes of optic flow computation techniques can discriminated (see for a good overview Beauchemin and Barron IBeauchemin19951): gradient based (or differential) methods; phase based (or frequency domain) methods; correlation based (or area) methods; feature point (or sparse data) tracking methods; In this chapter we compute the optic flow as a dense optic flow field with a multi scale differential method. The method, originally proposed by Florack and Nielsen [Florack1998a] is known as the Multiscale Optic Flow Constrain Equation (MOFCE). This is a scale space version of the well known computer vision implementation of the optic flow constraint equation, as originally proposed by Horn and Schunck [Horn1981]. This scale space variation, as usual, consists of the introduction of the aperture of the observation in the process. The application to stereo has been described by Maas et al. [Maas 1995a, Maas 1996a]. Of course, difficulties arise when structure emerges or disappears, such as with occlusion, cloud formation etc. Then knowledge is needed about the processes and objects involved. In this chapter we focus on the scale space approach to the local measurement of optic flow, as we may expect the visual front end to do. 17. 2 Motion detection with pairs of receptive fields As a biologically motivated start, we begin with discussing some neurophysiological findings in the visual system with respect to motion detection.
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Table of contents (22 chapters)
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Front Matter
Authors and Affiliations
Bibliographic Information
Book Title: Front-End Vision and Multi-Scale Image Analysis
Book Subtitle: Multi-scale Computer Vision Theory and Applications, written in Mathematica
Authors: Bart M. Romeny
Series Title: Computational Imaging and Vision
DOI: https://doi.org/10.1007/978-1-4020-8840-7
Publisher: Springer Dordrecht
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eBook Packages: Springer Book Archive
Copyright Information: Springer Science+Business Media B.V. 2003
Hardcover ISBN: 978-1-4020-1503-8Published: 30 September 2003
Softcover ISBN: 978-1-4020-1507-6Published: 30 September 2003
eBook ISBN: 978-1-4020-8840-7Published: 24 October 2008
Series ISSN: 1381-6446
Edition Number: 1
Number of Pages: XVIII, 466
Topics: Computer Imaging, Vision, Pattern Recognition and Graphics, Image Processing and Computer Vision, Biological and Medical Physics, Biophysics, Mathematical and Computational Biology, Artificial Intelligence