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fatysekDesign
Known Participant
December 5, 2011
Question

change depth from 32bit to 8bit

  • December 5, 2011
  • 2 replies
  • 4859 views

Hey.

is there a simple way to change depth of image. I'm makking TMO filter plugin, and operate on 32bit image, laast operation i need to convert to 8 bit.

Is there any function fot that?

thanks.

This topic has been closed for replies.

2 replies

Chris Cox
Chris Cox
Legend
December 5, 2011

Just create a filter to do the TMO in 32 bit - outputting your result in gamma 1.0, 32 bit values ranged 0 ... 1.0.

Then afterwards convert the document to 8 bit with a NULL tone mapping (Exposure/Gamma at 0/1).

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fatysekDesignAuthor
Known Participant
December 6, 2011

when I do conversion from 32 to 8, Photoshop running the HDR Tonning, what is wrong. How do I make it will not turn on?

Chris Cox
Chris Cox
Legend
December 7, 2011

Yes, Photoshop has to do some toning, so set it to do a NULL conversion: exposure & gamma with settings of 0 exposure, and a gamma of 1.0.

Tom Ruark
Tom Ruark
Inspiring
December 5, 2011

Not from a filter plug-in. You would have to do an automation plug-in that "listens" for your filter event to complete and then the automation plug-in can 'post process' your filter results and change the document to 8 bit. See the Listener automation example in the SDK.

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