Outputing Infra-red channel separately
PostPosted: Tue Sep 08, 2015 12:21 pm
by ashreid20
Hi,
I have a specific task that would be made easier if I could scan and output separately the the infra-red channel from a negative scan.
Is there any way of doing this?
scanner - Epson V850 w/ silverfast Ai Studio and/or Silverfast HDR.
thankyou!
A
Re: Outputing Infra-red channel separately
PostPosted: Tue Sep 08, 2015 3:59 pm
by LSI_Ketelhohn
Dear customer,
The 64 Bit
HDRi includes the infrared channel as a separate layer.
You only need an image editor, that can handle multi-layer tif files.
Photoshop can not do that but the free GIMP software does.
Kind regards,
Arne Ketelhohn.
Re: Outputing Infra-red channel separately
PostPosted: Sat Sep 12, 2015 9:09 am
by Jossie
Good morning,
GIMP can only handle 8bit-data. The exported IR-channel is saved as a 2x8bit image, where only the first layer does contain the 8-bit IR information. Also IrfanView extracts only the IR-channel in 8bit-format.
To utilize the full 16bit-information, one has to extract the IR-channel e.g. with imageJ (
http://imagej.nih.gov/ij/) and bio-formats Import(
http://www.openmicroscopy.org/site/support/bio-formats5.1/users/imagej/) or with imagemagick (
http://www.imagemagick.org/script/index.php).
Hermann-Josef Röser