Leyla,
There may be a better way, but I generally will open a single image into my Photoshop to create my mask. Create an image with the fisheye portion you want to keep black and the part you want masked out white. Save this as a .tiff file in your working directory. In Radiance, you will first need to convert the tiff into an hdr. This is done by the following command: ra_tiff -r filename.tiff mask.hdr To mask out your captured hdr using pcomb, this should work: pcomb captured.hdr -s -1000 mask.hdr > output.hdr (or pipe to another process). The "-s -1000" portion of the pcomb command should be sufficient, but if you have some remaining pixels in the masked area, try a different scaling factor (-10000, etc). Good luck. Chris Chris Coulter Senior Lighting Designer Buro Happold Consulting Engineers 100 Broadway, 23rd Floor New York, NY 10005 Tel: 212.334.2025 Direct: 212.616.0254 Email: [email protected] Website: www.burohappold.com From: Leyla Sanati [mailto:[email protected]] Sent: Tuesday, February 19, 2013 12:51 PM To: [email protected] Subject: [HDRI] Cleaning the HDR image with pcomb Hi, I have some HDR images captured by a fisheye lens, and I want to clean it up to only show the circular image in a black background. Can anyone help me with the pcomb command to mask off the circular image. Thanks, Leyla
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