Interior Photo Match in V-ray

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Interior Photo Match in V-ray

Postby rempage » Wed Oct 31, 2018 4:42 pm

Hello,

Finally, my first post on this great forum.
Do you guys have any tips on how to make an interior photo match? I'd like to avoid modelling a whole existing reception just to replace a ceiling raft, part of the floor and some furniture.
I presume it all depends on how good a photo is. It will also be tricky to match the perspective and existing lighting in vray.
Have any of you ever done a similar exercise with good results?

Thanks


Adam
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Re: Interior Photo Match in V-ray

Postby HornOxx » Wed Oct 31, 2018 5:12 pm

welcome to the forum - your first post since 2008 :!: :!: :) - and nice to compliment this place!
rempage wrote:...Have any of you ever done a similar exercise with good results?...

...very often already - even if I don't use V-Ray (there are enough professionals here) I suppose that this renderer takes over the SkUp camera 1 to 1 which would be the most important 1st requirement.
And yes, it makes sense to use an excellent photo, not necessarily for matching within SkUp itself, but for a possible mounting afterwards in Photoshop. 2nd requirement: Such a photo must have a real perspective and must not be a later made two-point perspective as you often see in magazines for example. Photomatch needs these vanishing points (?) for the adjustment.

If not yet known, a cool feature is that you can project the used photo as texture in or onto your "dummy" model, which is very helpful for your project.

this for now - let's see your photo and then take the next steps, if you like or need
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Re: Interior Photo Match in V-ray

Postby rempage » Fri Nov 02, 2018 9:17 am

welcome to the forum - your first post since 2008 :!: :!: :) - and nice to compliment this place!


Yeah...well, I guess it's better late than never ;)

I will have to pop in to site do some photographs first. Your note on three-point perspective is spot on. How do you rectify the perspective to two-points if you need to do some amendments later though?
Do you also suggest to build a simple dummy model with photo textures for reflections/ illumination / shadows?

Many thanks
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Re: Interior Photo Match in V-ray

Postby HornOxx » Fri Nov 02, 2018 10:43 am

Hi
I don't think this principle is the general fitting answer and it always depends on the model intention, the camera and lighting options etc. etc.
In principle it is often most intelligent and sufficient to work with a simplified model version of an environment. - by means of suitable real photo texturing material, this can often "fake" the impression of a real situation better than even the most elaborate modelling work - at least as long as it's just the scene background ;)

Exactly like a native SkUp model is 3P perspective, your real photo will always be a suitable 3P perspective! When photographing you can already consider which edges might be useful for you later in SkUp - Useful for photomatching are pictures only then when you can adjust the red and green axes later on.

And only for graphic reasons for example and only if needed:
2P perspective instead is always an "artificial" alienation of the image output above only - this output option is still available in SkUp as well as in any renderer or also later via post pro in any image editor ...
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