Cubemap Panorama to Spherical

[Marc Pasco]

Hello guys

In order to photoshop the "poles" of my panorama, in example to paint away the tripod from the ground I converted my HDR Spherical Panorama to a Cubemap (it´s in "Tools"9. After that I would be happy to get the image back in a Equirectangulat/spherical form. Is there any way I can do that using the PT Guy Tools ?

There is Website for that; 360toolkit but the image is 3 GIG (50.000x25.00 pixels) and therefore to heavy to Up and Download several images of this size.So I´m looking for a solution inside PT GUI.

THX !

Marc

[JPS]

Just load your cube face images in PTGui ! It will reconstruct the equirectangular image !!

[Marc Pasco]

H...but if I load the images there no control points because no overlapping of the 6 images...and there is no option "cubemap to spherical". That´s kind of weird as there is the option export to cubemap...

[PTGui Support]

Hi Marco,

If you give the images the right names, and the images are square, PTGui
will recognize this and assemble them automatically.

The names should be:
xxxxx.front.jpg
xxxxx.right.jpg
xxxxx.back.jpg
xxxxx.left.jpg
xxxxx.top.jpg
xxxxx.bottom.jpg
(or .tif, etc)

That's the easy way. There's also a manual way, but please try renaming
your images and see if that works.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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[aero engineer]

I have done this with the 6 cube faces with my version of PTGui (v11.32).  The resulting spherical pano (single image) has a fine line artifact along all edges of six images.  Is there a way (a setting) to fix this?  Thank you.

[PTGui Support]

Hi,

I think you can fix this in PTGui 11 by switching to alpha blending. See
the 'blending mode' setting in the Create Panorama tab.

If this doesn't fix it, reduce the lens focal length (in Lens Settings)
by a very tiny fraction. This enlarges the cube faces slightly so they
overlap.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 24/09/2022 08:49, aero engineer wrote:
> I have done this with the 6 cube faces with my version of PTGui
> (v11.32).  The resulting spherical pano (single image) has a fine line
> artifact along all edges of six images.  Is there a way (a setting) to
> fix this?  Thank you.
>
> On Tuesday, July 2, 2019 at 11:37:03 AM UTC-5 PTGui Support wrote:
>
> Hi Marco,
>
> If you give the images the right names, and the images are square,
> PTGui
> will recognize this and assemble them automatically.
>
> The names should be:
> xxxxx.front.jpg
> xxxxx.right.jpg
> xxxxx.back.jpg
> xxxxx.left.jpg
> xxxxx.top.jpg
> xxxxx.bottom.jpg
> (or .tif, etc)
>
> That's the easy way. There's also a manual way, but please try renaming
> your images and see if that works.
>
> Kind regards,
>
> Joost Nieuwenhuijse

> www.ptgui.com <http://www.ptgui.com>

>
> On 02/07/2019 18:27, Marc Pasco wrote:
> > H...but if I load the images there no control points because no
> > overlapping of the 6 images...and there is no option "cubemap to
> > spherical". That´s kind of weird as there is the option export to
> cubemap...
> >
> > Am Dienstag, 2. Juli 2019 15:29:55 UTC+2 schrieb JPS:
> >
> > Just load your cube face images in PTGui ! It will reconstruct the
> > equirectangular image !!
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "PTGui Support" group.
> > To unsubscribe from this group and stop receiving emails from it,
> send
> > an email to ptgui+un...@googlegroups.com
> > <mailto:ptgui+un...@googlegroups.com>.
> > To post to this group, send email to pt...@googlegroups.com
> > <mailto:pt...@googlegroups.com>.
> > Visit this group at https://groups.google.com/group/ptgui

> <https://groups.google.com/group/ptgui>.

> > To view this discussion on the web visit
> >
> https://groups.google.com/d/msgid/ptgui/bed77118-5578-47b8-a737-43230345a755%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/bed77118-5578-47b8-a737-43230345a755%40googlegroups.com>
>
> >

> <https://groups.google.com/d/msgid/ptgui/bed77118-5578-47b8-a737-43230345a755%40googlegroups.com?utm_medium=email&utm_source=footer

> <https://groups.google.com/d/msgid/ptgui/bed77118-5578-47b8-a737-43230345a755%40googlegroups.com?utm_medium=email&utm_source=footer>>.
>
> > For more options, visit https://groups.google.com/d/optout

> <https://groups.google.com/d/optout>.

>
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> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
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> To view this discussion on the web visit

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> <https://groups.google.com/d/msgid/ptgui/940a910f-0c55-4ffa-82f9-8ac520bf6dafn%40googlegroups.com?utm_medium=email&utm_source=footer>.

[aerodynamicsinc]

Thank you.  I got it to work.  The alpha blending did not change it. 
But I left that setting (used: alpha blending) and then changed the
focal length to 15.27 mm (90.1 deg) and that did the trick!  Now it is
perfect.  This was to produce a 16x8k pano from 4x4k cube faces.  Thanks!