[IPOL announce] new article: The Polar Epipolar Rectification
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Tue Mar 2 23:48:13 CET 2021
A new article is available in IPOL: http://www.ipol.im/pub/art/2021/328/
François Darmon, and Pascal Monasse,
The Polar Epipolar Rectification,
Image Processing On Line, 11 (2021), pp. 56–75.
https://doi.org/10.5201/ipol.2021.328
Abstract
Epipolar rectification of a stereo pair is the process of resampling a
pair of stereo images so that the apparent motion of corresponding
points is horizontal. This is an important preliminary step in depth
estimation, substituting depth by disparity estimation. Most methods
rely on a perspective transform of both images, which has the advantage
to simulate a different attitude of the pinhole cameras. A limitation is
that when an epipole is inside the image domain, it has to be sent to
infinity by the perspective transform, producing a strong distortion. On
the contrary, relying on a polar transform centered at the epipole
provides a method applicable universally to a pair of pinhole camera
views. We present in detail the algorithm, filling in the information
important for its implementation and missing in published articles.
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