Christine Lacombe
Applicability of Oriented Filters
to Edge Detection and Motion Analysis
Abstract:This paper deals with spatio-temporal oriented filters applied to motion
analysis in image sequences. As velocity corresponds to orientation in
the three-dimensional space, oriented filters are of the highest importance.
Adelson and Freeman have shown that the orientation which gives the
greatest output for these filters gives the slope of the contour, so the velocity
in the 3D case. Our approach will consist of two steps; first the theory and
the use of these oriented filters will be presented in the two-dimensional
case applied to traditional edges detectors. We will compare the different
approaches and show the importance of edge's orientation detection. As a
second step, this formalism of oriented filters will be generalized to the 3D
case and a discussion about their use in motion analysis will be presented.
This paper was prepared and researched at ATR as part of a six month
internship from INT, Paris, France. The research was performed under
the direction of Ed Gamble with the support of K. Arimura and K. Ueno.