Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: crearte on 2018-04-12, 21:50:24

Title: Spherical camera distortions, help!
Post by: crearte on 2018-04-12, 21:50:24

Hi all,

I'm rendering a panorama with the spherical option enabled but I'm getting some distortions in the are near the poles of the camera, I'm using corona panorama exporter to check the result, I don't know the origin of this issue and how to fix it.

I did also another test with a physical camera and a corona camera mod attached to it, distortions are less but still there.

The attached image shows the first render with a corona camera with the spherical option.

Any help will be appreciated.

Regards

Title: Re: Spherical camera distortions, help!
Post by: TomG on 2018-04-12, 22:03:20

As far as I know, spherical renderings will always show distortion at the poles (not just with Corona, or specific things within Corona, it's in the nature of spherical mapped renders).

The solution, if viable for your situation, is to use Cube mapping instead, which doesn't have those distortions. Of course, depends if the application you are going to use to view the renders supports cube mapping.

Title: Re: Spherical camera distortions, help!
Post by: romullus on 2018-04-12, 22:07:59

I think that waviness could happen only in your viewer and panorama itself is good. Try to search for better viewer, preferably not flash based.
As for pinching at the poles, i'm affraid this practically inevitable with spherical (equirectangular) projections, when there's fine pattern/details visible near zenith and/or nadir. The solution could be cubic projection, if your viewer supports it.

edit: ninja'd by Tom.

Title: Re: Spherical camera distortions, help!
Post by: crearte on 2018-04-13, 00:14:38

Thank you very much guys for the quick reply, on my way to explore cubic projection.