Yes, Photoshop strips the header from Radiance (HDR) images, including the view parameters. You can always add them back in afterwards using the Radiance "vinfo" command (on Unix anyway). You'll still have the problem that Photoshop doesn't do any kind of absolute calibration on HDR images, so if evalglare needs absolute quantities, it won't have them. Adding the correct exposure requires having an in-scene luminance measurement for calibration.
This is why it's generally better to use hdrgen or Photosphere for HDR creation in photometric applications, although a calibration measurement will improve your accuracy even more. Cheers, -Greg > From: Avinash Gautam <[email protected]> > Date: April 24, 2013 9:37:03 AM PDT > > Hi Chris, > > I think Adobe Photoshop must have messed up with the header files while > creating the HDR. I was about to try the methods you sent in your earlier > email but seems there is a shorter route by using hdrgen or photosphere to > create the HDR file. I am a novice in this area and your help is really > appreciated. > > Thanks again for all your help. > > Regards, > Avinash
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