My first HDR probe - and some Q's

radiance-general
1

List,

A while back I asked about digital cameras...
I ended up getting a 5 MP Canon Powershot A95
Seems to work fine, but autofocus gets funky with the small sphere

I have made my first HDR Probe
http://rastermon.com/rad/image/8amECrop.pic
and
http://rastermon.com/rad/image/8amNCrop.pic
These 2 HDRs ar approx 90 degrees offset - hence the N and E

My reflective ball is quite scratched, but I'm just practicing now.
BTW - here is a render with that HDR environment
http://rastermon.com/rad/image/cabintable_window.jpg
(the center ball is real - Photoshopped into the CG render)

My question is on getting rid of the photographer and fixing the pinch point
on the opposite side of the sphere.
According to this tutorial,
http://www.cgtechniques.com/tutorials/getridof.php

PTools is a plugin for Photoshop to undistort the image
http://webuser.fh-furtwangen.de/~dersch/

I've downloaded it and put it in my photoshop - plugins - filters folder
But then I can't find it in Photoshop - Filter
(I'm wondering if it only works in OS 9 / Classic Photoshop)

Has anyone done this?
Can it be done after the HDR is compiled, or does each source LDR have to be
fixed before creating the HDR?
If so - doesn't that remove EXIF info that PhotoSphere uses for the response
curve?

Most Photoshop filters are inactive when the in 16 bits/channel mode..

BTW - I'm on a Mac, so I don't use HDR Shop (don't know if that has any
undistort filters anyway)

thanks,
Rob F

2

It seems to work only in the Classic version of PShop. I tried to designate the plug-in for PShop CS and drop the .lib file into the System folder. No luck in OSX 10.3.X. I will try the Gimp and see how that PANS out (ha ha ha!)

Nice render! Yeah I noticed the "real" sphere had none of the reflections of the others in it - looks very convincing nonetheless. I have used HDRShop to remove the tripod/camera from 2 images taken at 90 degrees. I run it on a Mac with Virtual PC with no problems other than it is slow. I use HDRShop v.1 (the free, or formerly free version).

Rock on.

kirk

···

On Mar 30, 2005, at 3:21 PM, Fitzsimmons, Rob wrote:

PTools is a plugin for Photoshop to undistort the image
http://webuser.fh-furtwangen.de/~dersch/

I've downloaded it and put it in my photoshop - plugins - filters folder
But then I can't find it in Photoshop - Filter
(I'm wondering if it only works in OS 9 / Classic Photoshop)

thanks,
Rob F

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http://www.radiance-online.org/mailman/listinfo/radiance-general

3

It seems to work only in the Classic version of PShop. I tried to
designate the plug-in for PShop CS and drop the .lib file into the
System folder. No luck in OSX 10.3.X. I will try the Gimp and see how
that PANS out (ha ha ha!)

Nice render! Yeah I noticed the "real" sphere had none of the
reflections of the others in it - looks very convincing nonetheless. I
have used HDRShop to remove the tripod/camera from 2 images taken at 90
degrees. I run it on a Mac with Virtual PC with no problems other than
it is slow. I use HDRShop v.1 (the free, or formerly free version).

So you can do that in HDR bit depths?
Hmm not free - Plus I don't really want to buy Virtual PC.

perhaps I'l email the author of PTools.
Thanks for your input.

Rock on.

kirk

···

-----Original Message-----
From: Kirk Thibault
To: Radiance general discussion
Sent: 3/30/2005 1:13 PM
Subject: Re: [Radiance-general] My first HDR probe - and some Q's

On Mar 30, 2005, at 3:21 PM, Fitzsimmons, Rob wrote:

PTools is a plugin for Photoshop to undistort the image
http://webuser.fh-furtwangen.de/~dersch/

I've downloaded it and put it in my photoshop - plugins - filters
folder
But then I can't find it in Photoshop - Filter
(I'm wondering if it only works in OS 9 / Classic Photoshop)

thanks,
Rob F

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general