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
23 Jan 2022 17:07:19 EST (-0500)
  Re: POVRay 3.7 with depth-map unofficial patch release  
From: cjaramillo
Date: 27 Oct 2017 20:45:01
Message: <web.59f3d1fc554df4f57659d60a0@news.povray.org>
"handos" <han### [at] gmailcom> wrote:
> 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.

Hi, Ankur. Did the POV-Ray maintainers ever let you merge your depth map
generation patch into the official code? I'm looking for a way to achieve
generating depth maps for the rendered files as you did for the ICL-NUIM
dataset.

Thanks,

Carlos


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