POV-Ray : Newsgroups : povray.unofficial.patches : POVRay 3.7 with depth-map unofficial patch release : Re: POVRay 3.7 with depth-map unofficial patch release Server Time
28 Sep 2021 16:25:01 EDT (-0400)
  Re: POVRay 3.7 with depth-map unofficial patch release  
From: handos
Date: 18 Jul 2011 07:50:01
Message: <web.4e241ce9554df4f5d7ae32040@news.povray.org>
Hi Le,

I've kept a README_ANKUR here at
https://github.com/ankurhanda/povray.3.7.0.RC3.withdepthmap/blob/master/README_ANKUR
where I explained how to use it and what output files it dumps alongside
output.png
There is no such enable-disable depth-map facility at the moment but I guess it
shouldn't be too hard.

I just saw that in the other forum you'd posted the answer to my question on how
to get the camera parameters and which file to look in ;-). Thanks for that.

Thanks a lot!
Ankur.


Le_Forgeron <jgr### [at] freefr> wrote:
> Le 18/07/2011 00:05, handos nous fit lire :
> > Hi Le,
> >
> > Thanks for having spent time on this. I understand that it's not cleaned up yet
> > but it's just a small rudimentary version of the patch I created. I'd take your
> > advice and clean up a bit so that it's easy for other guys to understand.
> > My intention here was to just get some good feedback on it.
> >
> > Regarding the purpose, there are many applications in computer vision or
> > graphics where one would like to have a depth-map corresponding to the image.
> > And one might need to obtain 3D coordinates for each pixel observed in the image
> > to aid  3D reconstruction or applications related to Augmented Reality. I had
> > searched in the POVRay website to see if anyone had done that before with
> > POVRay-3.7. I guess maybe working on depth-map is quite specific but just in
> > case anyone wanted to have a depth-map along with image, it might be worth
> > taking a look at this patch I released.
> >
> > I'd definitely add the original version of 3.7 into my git-hub so that it's easy
> > to find out the patches I created.
> >
> > Thanks a lot!
>
> Nice. I would still need a basic tutorial about what happen (from an
> external user's point of view).
>
> For instance, take a scene.pov; With normal 3.7RC3, the command line
> would be "foo bar zorglub scene.pov" (well probably something more like
> "povray -Iscene.pov -H480 -W640 +A0.01 +FN")
> The output would be a png file, named scene.png.
>
> With your patched version, if I want the depth map, what is the command
> line ? If I do not want the depth map, can I expect using the 3.7RC3
> command line with the new binary or do I need something else ?
> How is named the depth map file ?
> What is its format ? How can I see it (I would like to be impressed like
> a lambda Mac/Iphone/Ipad user: no internal techniques, just nice pictures) ?
> Is the camera position & setting output in another file (what is its
> name ?) or is that part of the depth map file ?
>
> I'm sure the people dealing with depth map on a daily basis all know
> this stuff, but so far the poor neophytes are just left on the side of
> the road without a clue.


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