[Kde-imaging] [kipiplugins] [Bug 346053] Add PhotoSphere projection support (EquiRectangular)

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=346053

--- Comment #13 from Gilles Caulier <caulier.gilles at gmail.com> ---
>Gilles: The projection is one thing, but not the only possible culprit. Have you checked the >projection in the pto files like I suggested?

No, because in commented code, i don't see any lines about this operation.

Perhaps i forget something when i un-commented code.

>I somehow doubt that a very mature piece of software like Hugin generates a not "real >equirectangular projection", especially for such a basic projection. 

And Hugin support this kind of projection as it's written in documentation.
This is not the problem. The real question is how to activate it with CLI
tools.

>Either your photos are not stitched correctly (for example because of parallax errors from the >photo shoot), or the 3D viewer does not understand correctly how to map the pixels in the >space (the most likely scenario).

No. Panorama is simple : 3 JPEG without any difficulty to stitch. But it's not
a large panorama (aka 360°)

>My strongest suspect at the moment is the field of view, rather than the projection. Google's >3D viewer assume by default that the FOV is 360x180. That means that the projection is a >rectangle and the horizontal span is 360° and the vertical span 180°. If it's not, the 3D viewer >tries anyway and the panorama does not show correctly. In that case, several key XMP fields >have to be set with the correct panorama size (it were a 360x180), FOV, and crop (at least). >This is the complex part of setting the Show Photo XMP metadata correctly, and maybe the >reason I deactivated the code (I slowly begin to remember the complexity of the task).

So in first, i must to try with a 360° pano. I have some sample at home.

For a reduced FOV, there is a computation to add to set right XMP tag for
photoshere viewer. Can be complex to deal...

Gilles

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