Contribution of edge information to the Fisher-Rao metric for curves
SPEAKER：Prof. S.J. Maybank(School of Computer Science and Information Systems, Birkbeck College, London, UK )
CHAIR：Prof. Weiming Hu
TIME：December 17, 2014(Wednesday),14:00-16:00
VENUE：No.2 Meeting Room (3rd floor), Intelligence Building
ABSTRACT：
The Fisher-Rao metric describes the effects of finite resolution on the detection of curves in a digital image. Two curves which are sufficiently close together are indistinguishable given a measurement, in that there is no compelling reason to associate the measurement with one of the curves in preference to the other. A Fisher-Rao metric is defined for compound measurements, consisting of a point x and an angle α which specifies the direction of an edge at x. A tractable approximation to this metric is obtained. The approximating metric is given explicitly for straight lines and circles. In the case of straight lines, it is shown that the component α of the measurement makes a significant contribution to line detection only if the image is small.
BIOGRAPHY：
Steve Maybank received a BA in mathematics from King’s College Cambridge in 1976 and a PhD in Computer Science from Birkbeck College, University of London in 1988. He was a research scientist at GEC from 1980 until 1995, first at MCCS, Frimley and then from 1989 at the GEC Marconi Hirst Research Centre in London. In 1995 he became a lecturer in the Department of Computer Science at the University of Reading and in 2004 he became a professor in the School of Computer Science and Information Systems at Birkbeck College, University of London. His research interests include camera calibration, visual surveillance, tracking, filtering, applications of projective geometry to computer vision and applications of probability, statistics and information theory to computer vision. He is the author of over 95 scientific publications and one book. He is a Fellow of the Institute of Mathematics and its Applications, a Senior Member of the IEEE and a visiting professor at the National Laboratory of Pattern Recognition, Beijing. For further information see. http://www.dcs.bbk.ac.uk/~sjmaybank.