[Bug 789655] dewarp does not seem to work with fisheye video

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=789655

Jan Schmidt <thaytan at noraisin.net> changed:

           What    |Removed                     |Added
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                 CC|                            |thaytan at noraisin.net

--- Comment #6 from Jan Schmidt <thaytan at noraisin.net> ---
The problem here is that 'fisheye' and 'dewarp' have 2 completely different
definitions of fisheye, and 'dewarp' is not even attempting to do the inverse
of the 'fisheye' distortion operation.

AIUI, dewarp takes a downward looking fisheye camera view and unwraps it
radially to generate a 360 panorama of the scene. As it happens, I was looking
at this too the other day and realising we don't seem to have an element that
does the inverse distortion of the 'fisheye' element.

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