Cylindrical Output for Projection

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BMeyer
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Joined: Wed Jun 26, 2019 12:35 pm

Cylindrical Output for Projection

Post by BMeyer » Wed Nov 06, 2019 6:17 am

Hi Guys
I'm trying to recreate an old "Cyclorama" type exhibition to display old panoramas captured on multiple glass plates.
The hardware uses multiple projectors to show the images against the screen walls of a round 360° circular enclosure, with the viewer standing in the middle.

The problem with P2VR and any other Virtual Tour software like PTP, is that the projection looks "normal" in the centre of the screen, but "stretches" at the edges. I see this even with my 47" curved monitor.
This is a scene crop from the centre of the pano, 580x237px
580x237px.jpg
580x237px.jpg (88.11 KiB) Viewed 68 times
This is a scene crop when rotated to the edge of the pano, 766x277px
As an attempt is made to show the scene on wider and wider screens, this "stretching" becomes horrid.

The projection software will work with a cylindrical image, but projecting a single cylindrical image loses the interactive functionality of popup hotspots and other tour features, while preserving the correct viewing angles around the circle.
Any ideas about how to build a fully functional interactive P2VR tour with a 360° HFOV?
Regards, Barney
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766x277px.jpg
766x277px.jpg (124.9 KiB) Viewed 68 times

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Hopki
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Joined: Thu Jan 10, 2008 3:16 pm
Location: Layer de la Haye, Essex UK
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Re: Cylindrical Output for Projection

Post by Hopki » Thu Nov 07, 2019 5:25 pm

HI,
Have you tried "Flat"?
This then treats the image as a flat image with no distortion.
Properties panel, Input Image Type: use the dropdown menu and select Flat.
Regards,
Hopki

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