I have found a way to turn images into good light probe images. Using
Photoshop I select the light sources in the image with the wand and  invert
then convert the image to 16bit. Using levels I drop white from 255 down to
8. That is 1/32. Save image as tiff. Some small adjustments with the black
side may be needed but this will not be known until your finished. Load the
tiff file into hdrshop and scale the pixels by 32. Save as hdr and now you
have an image that will light the scene correctly.

I will post an example in binaries.images.

--
Mike Williams


IBO#770070
www.quixtar.com
www.espring.com
www.nutrilite.com
www.blionline.com

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"Micheal \(Mike\) Williams" <mic### [at] quixnetnet> wrote in
news:3f284a60$1@news.povray.org: 

> I have found a way to turn images into good light probe images. Using
> [...]

I saw your 360 image in the binaries section.  But to use a light probe 
using the new map type in mlpov you need a spherical image, just like the 
ones on Debevec's web site:

http://www.debevec.org/Probes/

I did a homemade one using my camera and a chrome sphere, as suggested on 
his site.

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You can still use the standard map type in mlpov. In fact I prefer it. It
provides a complete environment.

image. There are expensive equipment to do it. The easy way just for playing
around is to go online and grab some like I did.


"None" <Non### [at] onca> wrote in message
news:Xns### [at] 204213191226...
> "Micheal \(Mike\) Williams" <mic### [at] quixnetnet> wrote in
> news:3f284a60$1@news.povray.org:
>
> > I have found a way to turn images into good light probe images. Using
> > [...]
>
> I saw your 360 image in the binaries section.  But to use a light probe
> using the new map type in mlpov you need a spherical image, just like the
> ones on Debevec's web site:
>
> http://www.debevec.org/Probes/
>
> I did a homemade one using my camera and a chrome sphere, as suggested on
> his site.

Post a reply to this message

"Micheal \(Mike\) Williams" <mic### [at] quixnetnet> wrote in
news:3f293a76$1@news.povray.org: 

> You can still use the standard map type in mlpov. In fact I prefer it.
> It provides a complete environment.

> image. There are expensive equipment to do it. The easy way just for
> playing around is to go online and grab some like I did.

Ok, sounds good, thanks.  Could you post a Povray image you did with that 
HDRI, that would be interesting.

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