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Hello everyone.
I need to solve how to usue raytracing on my 3d .obj models and get result and
use those results in RaySAR.
So first thing is i need to understand how to use PovRay. I am someone who
doesnt have any knowledge about coding, neither matlab or python etc.
Im having a hard time understanding how to use it. Is there any walkthrough or
video shows how to use PovRay and get the results ?
Im sorry if i missed any topic in the website, im just newbie here.
Thank you so much in advance
Archadas
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hi,
"Archadas" <nomail@nomail> wrote:
> Hello everyone.
> I need to solve how to usue raytracing on my 3d .obj models and get result and
> use those results in RaySAR.
there's no direct import of .obj format files in "stock" POV-Ray.
> So first thing is i need to understand how to use PovRay. I am someone who
> doesnt have any knowledge about coding, neither matlab or python etc.
> Im having a hard time understanding how to use it. Is there any walkthrough or
> video shows how to use PovRay and get the results ?
to get you started, hope you'll "find your feet":
<https://wiki.povray.org/content/Documentation:Tutorial_Section_2#Getting_Started>
<https://wiki.povray.org/content/Documentation:Tutorial_Section_3.8#SDL_tutorial:_A_raytracer>
the wiki always has the most up-to-date "official" documentation.
regards, jr.
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Le 2023-10-26 à 04:45, Archadas a écrit :
> Hello everyone.
> I need to solve how to usue raytracing on my 3d .obj models and get result and
> use those results in RaySAR.
> So first thing is i need to understand how to use PovRay. I am someone who
> doesnt have any knowledge about coding, neither matlab or python etc.
>
> Im having a hard time understanding how to use it. Is there any walkthrough or
> video shows how to use PovRay and get the results ?
>
> Im sorry if i missed any topic in the website, im just newbie here.
>
> Thank you so much in advance
>
> Archadas
>
First thing : Get in the tutorial that come with POV-Ray and follow it.
It's part of the included help file. Open the help and look for the
second item : POV-Ray Tutorial | Getting Started.
It starts with some basic principles and some very simple scenes for you
to type in and render. Then, change something, render again and see the
change. Take your time. Don't be afraid to experiment.
It progressively get you to create some more complex and detailed scenes
and images.
Enter the following in the editor and click the «Run» button.
#version 3.7;
#include "colors.inc"
// The include files contain basic colour definitions
// A simple pinhole camera
camera {
location <0, 2, -3>
look_at <0, 1, 2>
}
// A plain yellow sphere
sphere {
<0, 1, 2>, 2
texture {
pigment { Yellow }
}
}
// Let shed some light in the sphere
light_source { <2, 4, -3> White}
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"Archadas" <nomail@nomail> wrote:
> Hello everyone.
Hello, and welcome.
> I need to solve how to usue raytracing on my 3d .obj models and get result and
> use those results in RaySAR.
Perhaps post a link or an attachment of your .obj (depending on size) and give
us some background on RaySAR and what you need to do with POV-Ray to make it all
work.
> So first thing is i need to understand how to use PovRay. I am someone who
> doesnt have any knowledge about coding, neither matlab or python etc.
There are some videos about basic POV-Ray usage on Youtube, and there are plenty
of example scenes, and (in windows) the drop-down Insert menu in the editor to
paste in snippets of useful code.
As with everything, pick some very simple task as your goal, and then
progressively add levels of complexity.
> Im having a hard time understanding how to use it.
Welcome to the POV-Ray new user club ;)
Try out some simple scenes, and post your full test scene and the problems
you're having, and we can get you pointed in the right direction.
- Bill
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"jr" <cre### [at] gmail com> wrote:
> hi,
>
> "Archadas" <nomail@nomail> wrote:
> > Hello everyone.
> > I need to solve how to usue raytracing on my 3d .obj models and get result and
> > use those results in RaySAR.
>
> there's no direct import of .obj format files in "stock" POV-Ray.
>
>
> > So first thing is i need to understand how to use PovRay. I am someone who
> > doesnt have any knowledge about coding, neither matlab or python etc.
> > Im having a hard time understanding how to use it. Is there any walkthrough or
> > video shows how to use PovRay and get the results ?
>
> to get you started, hope you'll "find your feet":
>
> <https://wiki.povray.org/content/Documentation:Tutorial_Section_2#Getting_Started>
>
<https://wiki.povray.org/content/Documentation:Tutorial_Section_3.8#SDL_tutorial:_A_raytracer>
>
> the wiki always has the most up-to-date "official" documentation.
>
>
> regards, jr.
Hello Jr.
Thank you for your reply. I though i could import it but if there is no, i
should find a way then.
I followed the links you shared and i liked how it went but the thing is what we
doing here is mostly writing the code and receiving the model/image. What i need
is giving the model/image and receiving the code (as far as i understand) to use
in RaySar.
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Alain Martel <kua### [at] videotronca> wrote:
> > Hello everyone.
> > I need to solve how to usue raytracing on my 3d .obj models and get result and
> > use those results in RaySAR.
> > So first thing is i need to understand how to use PovRay. I am someone who
> > doesnt have any knowledge about coding, neither matlab or python etc.
> >
> > Im having a hard time understanding how to use it. Is there any walkthrough or
> > video shows how to use PovRay and get the results ?
> >
> > Im sorry if i missed any topic in the website, im just newbie here.
> >
> > Thank you so much in advance
> >
> > Archadas
> >
>
> First thing : Get in the tutorial that come with POV-Ray and follow it.
> It's part of the included help file. Open the help and look for the
> second item : POV-Ray Tutorial | Getting Started.
>
> It starts with some basic principles and some very simple scenes for you
> to type in and render. Then, change something, render again and see the
> change. Take your time. Don't be afraid to experiment.
> It progressively get you to create some more complex and detailed scenes
> and images.
>
>
> #version 3.7;
> #include "colors.inc"
> // The include files contain basic colour definitions
> // A simple pinhole camera
> camera {
> location <0, 2, -3>
> look_at <0, 1, 2>
> }
> // A plain yellow sphere
> sphere {
> <0, 1, 2>, 2
> texture {
> pigment { Yellow }
> }
> }
> // Let shed some light in the sphere
> light_source { <2, 4, -3> White}
Hello Alain Martel,
Thank you for your reply. I did what you told me and followed tutorial from wiki
as well. Created different shapes images etc. Changed the code and get different
results and all. But i still didnt understand how to do `opposite` of this. What
i need is (as far as i know, still not sure) using povray on my 3d model scene
and get the raytracing results and use those results in RaySAR to get Sar image
simulation results. Still dont know how to manage it since i am not good with
coding
Thank you again
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"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Archadas" <nomail@nomail> wrote:
> > Hello everyone.
>
> Hello, and welcome.
>
> > I need to solve how to usue raytracing on my 3d .obj models and get result and
> > use those results in RaySAR.
>
> Perhaps post a link or an attachment of your .obj (depending on size) and give
> us some background on RaySAR and what you need to do with POV-Ray to make it all
> work.
>
> > So first thing is i need to understand how to use PovRay. I am someone who
> > doesnt have any knowledge about coding, neither matlab or python etc.
>
> There are some videos about basic POV-Ray usage on Youtube, and there are plenty
> of example scenes, and (in windows) the drop-down Insert menu in the editor to
> paste in snippets of useful code.
> As with everything, pick some very simple task as your goal, and then
> progressively add levels of complexity.
>
> > Im having a hard time understanding how to use it.
>
> Welcome to the POV-Ray new user club ;)
>
> Try out some simple scenes, and post your full test scene and the problems
> you're having, and we can get you pointed in the right direction.
>
> - Bill
Hello Bill
Thank you for your reply
i can send my obj file in following days if it could be useful.
https://github.com/StefanJAuer/RaySAR
this is the link of RaySAR from Stefan JAuer. My duty is using RaySAR to get SAR
simulation results of my 3d model. I need to find the way to do it and start
using it on my 3d models as soon as possible for my studies.
As i mentioned before, all the tutorials are writing the code and getting the
image but i need opposite. Sorry everyone if im getting something wrong, maybe
thats how its done or how its start, i just dont really know.
Thank you so much for your welcoming message :)
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Right, so:
"RaySAR can be run on Windows / Linux and is based on an adapted version of the
open-source ray tracer POV-Ray."
Presumably Dr. Auer isn't going to just send you off to perform some ill-defined
task with a piece of software that he (likely) knows you know nothing about.
(Although having been through several (technically 5) universities, it wouldn't
be something I'd dismiss out-of-hand ;) )
"...but i need opposite"
I'd say that what you need to do is rigorously define the task and what the
input and output need to be. Clearly, RADAR is very much like light in that it
can travel in straight lines and bounce - so with POV-Ray, you are going to use
a lightsource and objects, and presumably a reflective surface to mimic RADAR
signals.
Draw a labeled diagram to illustrate what you need to do.
- BW
IIRC, you can use Poseray software to convert your .obj to a mesh2 object.
You might want to find a much smaller .obj file to set up a sample scene and
work out all of the details, before running it on a huge file.
(I for one, would love to have some folks from your group contribute some
practical photogrammetry resources to our community (equations, code), since I
and a few others have a long standing interest in the subject.)
We'd love to help further develop POV-Ray as a useful photogrammetry-related
software package and extend its present sphere of use!
"Archadas" <nomail@nomail> wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> > "Archadas" <nomail@nomail> wrote:
> > > Hello everyone.
> >
> > Hello, and welcome.
> >
> > > I need to solve how to usue raytracing on my 3d .obj models and get result and
> > > use those results in RaySAR.
> Hello Bill
> Thank you for your reply
> i can send my obj file in following days if it could be useful.
> https://github.com/StefanJAuer/RaySAR
> this is the link of RaySAR from Stefan JAuer. My duty is using RaySAR to get SAR
> simulation results of my 3d model. I need to find the way to do it and start
> using it on my 3d models as soon as possible for my studies.
>
> As i mentioned before, all the tutorials are writing the code and getting the
> image but i need opposite. Sorry everyone if im getting something wrong, maybe
> thats how its done or how its start, i just dont really know.
>
> Thank you so much for your welcoming message :)
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