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"jhu" <nomail@nomail> wrote:
> Wow! That's awesome!
Thank you!
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"Nekar Xenos" <nek### [at] gmail com> wrote:
> On Fri, 14 Feb 2014 00:37:11 +0200, Kenneth <kdw### [at] gmailcom> wrote:
>
> This is awesome!
Thanks!
>
> I wonder how the mobile app FXGuru does the tracking with camera movement.
Hmm, that's new to me; I'll have to look it up. Sounds interesting.
>
> BTW on this scene - how about using the background photo as a sky_sphere
> so the reflections match the scenery a bit more?
I gave that some thought; but the video image background has such a limited
field of view that I thought it might look strange as a 'spherical' reflection
(i.e., mapped to a sphere.) The problem with using a sky_sphere is that my
police car renders need a transparent background (for compositing later); I
don't *think* a sky_sphere can be made no_image (?). But I could be wrong about
that.
The reflections do need better imagery, though. I also thought of going out in
my driveway and making some stitched-together photos of the surroundings, from
the 'location' of the police car. But my original background movie was made last
Spring, when all the trees etc. were in bloom; now it's winter and the trees are
bare! :-/
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Thomas de Groot <tho### [at] degrootorg> wrote:
> That is looking great indeed. So, not only early retirement (congrats!)
> but you now own a first generation new concept car! Some guys have it
> all... :-)
>
> I second Nekar's suggestion.
>
Thanks, Thomas. Yeah, with all the snow that has been falling here in Virginia
this winter, it would be NICE to have a flying car to escape it all!
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"Mr" <nomail@nomail> wrote:
> "jhu" <nomail@nomail> wrote:
> > Wow! That's awesome!
>
> Yes,
>
> Were you aware that Blender had matchmoving features?
>
> Maybe some pieces of the code might be of some help to your project?
I did read that somewhere. What a nice feature! I wonder how expert it is in
determining *spatial* movement of the video camera?
There's another (dedicated) matchmoving program called MOCHA that I would love
to have. But then, it would remove the fun of trying to code my own version in
POV-Ray! ;-)
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On 14/02/2014 5:02 PM, Kenneth wrote:
> I
> don't*think* a sky_sphere can be made no_image (?). But I could be wrong about
> that.
You could always use a large sphere with a spherical projection and the
no image flag.
--
Regards
Stephen
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On 14/02/2014 6:20 PM, Stephen wrote:
> On 14/02/2014 5:02 PM, Kenneth wrote:
>> I
>> don't*think* a sky_sphere can be made no_image (?). But I could be
>> wrong about
>> that.
>
> You could always use a large sphere with a spherical projection and the
> no image flag.
>
>
Oh! Very nice work. I forgot to say.
--
Regards
Stephen
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"Kenneth" <kdw### [at] gmailcom> wrote:
> The problem with using a sky_sphere is that my
> police car renders need a transparent background (for compositing later); I
> don't *think* a sky_sphere can be made no_image (?). But I could be wrong about
> that.
No, you are not wrong. Luckily, POV-Ray has a built-in sphere primitive. :-)
__________________________________________________
//+ua
#version 3.7;
global_settings { assumed_gamma 1 }
#include "colors.inc"
#include "skies.inc"
sphere
{ 0, 1
//Substitute your image map
texture
{ pigment
{ gradient y color_map
{ [0 rgb <0.4, 0.6, 1.0>]
[1 rgb <0.10, 0.15, 0.30>]
}
}
finish { ambient 0 diffuse 0 emission 1 }
}
texture { T_Cloud1 scale 0.1 }
//
scale 10000
hollow
no_image
}
light_source
{ <-1, 1, -1> * 5000, rgb <1.4716, 1.0775, 0.6379>
parallel point_at 0
}
camera
{ location <0, 0.75, -5>
look_at <0, 1, 0>
angle 40
}
plane { y, 0 pigment { checker rgb 0.05 rgb 1 } }
sphere
{ y, 1
pigment { rgb <0.61, 0.61, 0.64> }
finish
{ reflection { 1 metallic }
ambient 0 diffuse 0
specular albedo 1 metallic roughness 0.0001
}
}
Post a reply to this message
Attachments:
Download 'kenneth-alpha_sky.png' (53 KB)
Preview of image 'kenneth-alpha_sky.png'
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Stephen <mca### [at] aolcom> wrote:
> >
> > You could always use a large sphere with a spherical projection and the
> > no image flag.
Yeah, that's what I'm doing now.
What I *really* need to do-- for this project and others-- is to buy a shiny
sphere, for making a 'light probe' (a non-HDRI version, as my little Canon video
camera doesn't shoot HDRI/'raw' images, unfortunately.) Then I could photograph
the surrounding 'environment' in just a single image (or two? I'm still not sure
of how light probes are made) and map that to the large no_image sphere. In the
past, I've simply stitched lots of 'normal' photos together, to get a
quasi-360-degree image for reflections. What a pain.
> Oh! Very nice work. I forgot to say.
Many thanks!
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"Kenneth" <kdw### [at] gmailcom> wrote:
>
> What I *really* need to do-- for this project and others-- is to buy a shiny
> sphere, for making a 'light probe' (a non-HDRI version, as my little Canon video
> camera doesn't shoot HDRI/'raw' images, unfortunately.)
Of course, there's the alternate trick of making, say, five bracketed exposures
of the mirrored sphere with my 'regular' camera, and then combining those in
specialized software to make an HDRI image. But I haven't gotten into the HDRI
world yet, sad to say. "So little time, so MUCH to learn." ;-)
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"Kenneth" <kdw### [at] gmailcom> wrote:
> "Kenneth" <kdw### [at] gmailcom> wrote:
>
> >
> > What I *really* need to do-- for this project and others-- is to buy a shiny
> > sphere, for making a 'light probe' (a non-HDRI version, as my little Canon video
> > camera doesn't shoot HDRI/'raw' images, unfortunately.)
>
> Of course, there's the alternate trick of making, say, five bracketed exposures
> of the mirrored sphere with my 'regular' camera, and then combining those in
> specialized software to make an HDRI image. But I haven't gotten into the HDRI
> world yet, sad to say. "So little time, so MUCH to learn." ;-)
This is pretty cool!
I have a 5 inch chrome sphere that I use for that very purpose (plus it looks
cool on my desk when not in use). Mount your camera on a tripod and take a set
of bracketed shots, then rotate the tripod ~90 degrees around the sphere and
take another set of bracketed shots. After you've combined the two bracketed
imagesets into 2 HDRs you can merge these offset images to eliminate the
camera/tripod completely from the final shot. Of course, Ive's IC is very useful
here:
http://www.lilysoft.org/IC/ic_index.htm
-------------------------------------------------
www.McGregorFineArt.com
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