Dear users,
I produced a couple of hdr images, each from a different light source
(using the radiance module of Relux). I am looking for a way to merge
them and to be able to adjust their intensity. I tried to load them into
Photoshop, but I am not sure how to overlay (lighten?) them, and the
Photoshop layers are not working.
Are there programs where I can easily do that (The one I know is
Vivaldi from Zumtobel - is that any good?)? If I can do this in
Photoshop, how can I put the images onto different layers to be able to
mix them? How can I produce a little animation of fading in and out of
two images?
Thanks for your help
Anselm
···
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Hi Anselm.
I don't know if Relux produces plain Radiance RGBE HDR images. If so
you can modify them using the tools provided in the Radiance
distribution. You will have the command line, though.
To mix two (or more) images you can use the program pcomb. You can
specify a multiplier for each image. For example, to mix
"downlight.hdr" with 60% and "wallwash.hdr" at 40% you would use the
command:
pcomb -s 0.6 downlight.hdr -s 0.4 wallwash.hdr > room_6_4.hdr
Using HDR images as input will give you the 'correct' amount of light
in a space. However, if you are only interested in a 'visual' fade
between the two you can simply convert the two images to a 32bit TIF
or BMP image and use the controls you know from Photoshop. I would
think Relux has tools to do that. If not this is the equivalent
Radiance command line:
ra_tiff images.hdr image.tif
Regards,
Thomas
···
On Thu, Mar 18, 2010 at 10:09 AM, Anselm von Held <[email protected]> wrote:
Dear users,
I produced a couple of hdr images, each from a different light source (using
the radiance module of Relux). I am looking for a way to merge them and to
be able to adjust their intensity. I tried to load them into Photoshop, but
I am not sure how to overlay (lighten?) them, and the Photoshop layers are
not working.
Are there programs where I can easily do that (The one I know is Vivaldi
from Zumtobel – is that any good?)? If I can do this in Photoshop, how can I
put the images onto different layers to be able to mix them? How can I
produce a little animation of fading in and out of two images?
Thanks for your help
Anselm
____________________________________________________________
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systems are scanned for acceptability of content and viruses
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Hi
A possibilty for easy addition and other operations on hdr images is HDRShop ... Downloadable in a free 1.0 version from www.hdrshop.com
Best
Claus
···
Sent from my iPod
On 18/03/2010, at 12.07, Thomas Bleicher <[email protected]> wrote:
Hi Anselm.
I don't know if Relux produces plain Radiance RGBE HDR images. If so
you can modify them using the tools provided in the Radiance
distribution. You will have the command line, though.
To mix two (or more) images you can use the program pcomb. You can
specify a multiplier for each image. For example, to mix
"downlight.hdr" with 60% and "wallwash.hdr" at 40% you would use the
command:
pcomb -s 0.6 downlight.hdr -s 0.4 wallwash.hdr > room_6_4.hdr
Using HDR images as input will give you the 'correct' amount of light
in a space. However, if you are only interested in a 'visual' fade
between the two you can simply convert the two images to a 32bit TIF
or BMP image and use the controls you know from Photoshop. I would
think Relux has tools to do that. If not this is the equivalent
Radiance command line:
ra_tiff images.hdr image.tif
Regards,
Thomas
On Thu, Mar 18, 2010 at 10:09 AM, Anselm von Held > <[email protected]> wrote:
Dear users,
I produced a couple of hdr images, each from a different light source (using
the radiance module of Relux). I am looking for a way to merge them and to
be able to adjust their intensity. I tried to load them into Photoshop, but
I am not sure how to overlay (lighten?) them, and the Photoshop layers are
not working.
Are there programs where I can easily do that (The one I know is Vivaldi
from Zumtobel – is that any good?)? If I can do this in Photoshop, how can I
put the images onto different layers to be able to mix them? How can I
produce a little animation of fading in and out of two images?
Thanks for your help
Anselm
____________________________________________________________
Electronic mail messages entering and leaving Arup business
systems are scanned for acceptability of content and viruses
_______________________________________________
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
Hi,
You can also try
RadDisplay<http://deluminaelab.com/en/raddisplay_details.html>,
on tab ImagesManipulation you have section Compare Images, where you can
add, substract images and do other manipulations (you can also manually
change pcomb command inside the program to tune results better).
Hope it helps,
Marija
···
On Thu, Mar 18, 2010 at 10:09 AM, Anselm von Held >> <[email protected]> wrote:
Dear users,
I produced a couple of hdr images, each from a different light source
(using
the radiance module of Relux). I am looking for a way to merge them and
to
be able to adjust their intensity. I tried to load them into Photoshop,
but
I am not sure how to overlay (lighten?) them, and the Photoshop layers
are
not working.
Are there programs where I can easily do that (The one I know is Vivaldi
from Zumtobel – is that any good?)? If I can do this in Photoshop, how
can I
put the images onto different layers to be able to mix them? How can I
produce a little animation of fading in and out of two images?
Thanks for your help
Anselm