--------
WARNING: At least one of the links in the message below goes to an .exe file,
which could be malicious. To learn how to protect yourself, please go here:
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--------
Wonderful! IT WORKS!
Thank you Axel, you saved my day!
<><><><><><><><><><><><>
Marie-Claude Dubois, M. Arch. PhD
<><><><><><><><><><><><>
________________________________________
Fr?n: Axel Jacobs [jacobs.axel at gmail.com]
Skickat: den 20 augusti 2014 10:34
Till: High Dynamic Range Imaging
?mne: Re: [HDRI] Radiance ximage viewer
Hi Marie-Claude,
You should be able to just download the various different image
formats by right-clicking over the link and selecting 'Save link
as...'
Here's an example of what you get:
- Medium size (800x531)
-- Radiance RGBE (1.23 MB)
-- OpenEXR (1021.62 kB)
-- JPEG-HDR (130.81 kB)
- Large size (1024x680)
-- Radiance RGBE, (1.85 MB)
-- OpenEXR (1.44 MB)
-- JPEG-HDR (137.04 kB)
What you want is the large RGBE image. This is in Radiance format,
with the extension '.hdr'. Some older HDR viewers, e.g. the one that
came with Ecotect, insist on the old '.pic' extension. You can just
rename the file if you're using such software.
Hope this works for you
Regards
Axel
On 20 August 2014 08:27, Marie-Claude Dubois
<marie-claude.dubois at ebd.lth.se> wrote:
> --------
> WARNING: At least one of the links in the message below goes to an .exe file,
> which could be malicious. To learn how to protect yourself, please go here:
> https://commons.lbl.gov/x/_591B
> --------
>
> Thank you Axel.
> I have tried this but from WebHDR, I do not seem to be able to save my picture as RGBE file (.hdr). There is only an option to save it as either *.jpg or *bmp. I clicked on all I could see that resembles what you describe but the only thing it returns is a text file?
> Please give me some tips if you have...
> Thank you.
>
> <><><><><><><><><><><><>
> Marie-Claude Dubois, M. Arch. PhD
>
> ________________________________________
> Fr?n: Axel Jacobs [jacobs.axel at gmail.com]
> Skickat: den 20 augusti 2014 09:06
> Till: High Dynamic Range Imaging
> ?mne: Re: [HDRI] Radiance ximage viewer
>
> Marie-Claude,
>
> the JPG images that WebHDR generates are in a special HDR format that
> Greg developed. They are essentially 'normal' JPEGs, but with a clever
> HDR header bolted to them. With almost all image editing software, the
> HDR info is lost or ignored.
>
> You should use the RGBE file (.hdr) the WebHDR also generates.
>
> There is a Windows HDR viewer called HDRView that was developed by Paul
> Debevec. It is no longer available on his web site, but you can still
> find it through a Google search. HDRView displays the pixel's RGB under
> the cursor in the status line. I am not sure if this takes into account
> the exposure value, but do give it a try. If nothing else, it's a small
> and very fast HDR viewer for Windows.
>
> If you know the pixel coordinates for which you need the luminance, you
> could also extract it with pvalue, although this generates rather large
> text files. Unfortunately, you don't get the UNIX text processing
> commands on Windows, but some are available as extra downloads. The
> 'grep' command is pretty handy for filtering out exactly what you need.
>
> Best
>
> Axel
>
>
> On 20/08/14 07:53, Marie-Claude Dubois wrote:
>> --------
>> WARNING: At least one of the links in the message below goes to an .exe file,
>> which could be malicious. To learn how to protect yourself, please go here:
>> https://commons.lbl.gov/x/_591B
>> --------
>>
>> Thank you for the quick answer Robert.
>> I am (unfortunately) still working with Windows...I managed to discover rvu.exe on my DIVA\Radiance\bin installation. The simple "t" command works very well when I use a *.pic file as input (a file generated in a Radiance simulation). However, now I am trying to use a *jpg image generated with WebHDR and this does not work.
>> What should I do? I need to be able to pick pixles in this image to check if my luminance measurements match with parts of the scene.
>> Please give me some tips....
>> Thx
>>
>> <><><><><><><><><><><><>
>> Marie-Claude Dubois, M. Arch. PhD
>> <><><><><><><><><><><><>
>>
>> ________________________________________
>> Fr?n: Guglielmetti, Robert [Robert.Guglielmetti at nrel.gov]
>> Skickat: den 19 augusti 2014 17:28
>> Till: High Dynamic Range Imaging
>> ?mne: Re: [HDRI] Radiance ximage viewer
>>
>> --------
>> WARNING: At least one of the links in the message below goes to an .exe file,
>> which could be malicious. To learn how to protect yourself, please go here:
>> https://commons.lbl.gov/x/_591B
>> --------
>>
>> NOTE:
>> Uhm, yeah, so, I forgot, we don't actually build image for Windows. Sorry about that! Since image relies on the X11 driver, it would require a re-write (using Qt or some other cross platform display driver) to work on Win. So we punted on that one.
>>
>> All is not lost for Windows users, though. We *did* port rvu to Windows, and you can use that to pick luminance values from pixels, instead.
>>
>> - Rob
>>
>> On 8/19/14, 8:50 AM, "Guglielmetti, Robert" <Robert.Guglielmetti at nrel.gov<mailto:Robert.Guglielmetti at nrel.gov>> wrote:
>>
>> For Windows, I think you'd have to run the installer, but you could always just install it to a secondary location and copy ximage.exe to your usual location, then delete this second install without messing about with paths.
>> Windows installer:
>> https://github.com/NREL/Radiance/releases/download/4.2/radiance-4.2-win32.exe
>>
>>
>>
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>>
>
>
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