re !
je viens de lire ca sur le wiki panotools, je ne savais pas :
"Fisheye lenses and adapters do not have a fixed entrance pupil (no-parallax point), as most rectilinear lenses do. Instead, the entrance pupil of a fisheye lens depends on the angle from the lens axis, typically moving forward as the angle increases from 0 degrees to 90 degrees.
In theory, this means that it is impossible to get a perfectly stitched panorama from a fisheye lens.
In practice, stitching can be almost perfect if you calibrate your camera mount using the same angle from lens axis that you usually use for stitching."
J'avoue n'avoir pas bien saisi la derniere phrase. |