Save Channel as File

AM
Posted By
Andrew_Myob
Mar 18, 2009
Views
655
Replies
8
Status
Closed

[New Poster Alert]

I have a 48bit RGB TIF file, and I would like to save just one channel from that file as a 16bit Grayscale.

Having done a bit of digging, I have found numerous ways to convert the whole image to Grayscale, with varying degrees of artistic control, but nothing about ripping out a single channel.

Can it be done? How? Have I just overlooked the obvious somewhere?

I would like to do this with as little user intervention as possible as I’m likely to want to do it, in batch mode, to a lot of images.

PS: I have no objection to a solution that actually saves all three channels in one operation, each to a separate file. I can always throw away the spares.

Regards, Andrew.
Related Tags
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O
OldBob
Mar 18, 2009
In the Channels flyout; will ‘Split Channels’ and saving the results work for you?
AM
Andrew_Myob
Mar 18, 2009
That has to be the fastest winner of my "hero of the week" award in quite a long time!

Split Channels certainly gets the data the way I want it.

Now I just have to work out the best way of automating the save(s).

Many Thanks,
O
OldBob
Mar 18, 2009
Sorry. Next time I’ll try not to make you wait so long. XD

Glad I could help.
P
Phosphor
Mar 18, 2009
Another, perhaps easier way would be to choose Duplicate Channel form the flyout and select Document>New in the dialog dropdown.
AM
Andrew_Myob
Mar 19, 2009

[I originally posted this last night, but it never made it…]

I would agree that this is a quicker way to extract a single layer (my original goal) but the result seems to think it is an "Alpha Channel" and refuses to be saved as a TIF. [I’m sure I ought to know what to do with an "Alpha Channel", but my education hasn’t got that far yet].
F
Freeagent
Mar 19, 2009
Click desired channel in the channels panel, select all, copy, paste into new doc.
ZB
Zeno_Bokor
Mar 19, 2009
The reason why you can’t save it as a TIF is because the image created using the Duplicate Channel command is in Multichannel mode. You have to convert it to Grayscale by going to Image->Mode->Grayscale and then you can save it as a TIF
AM
Andrew_Myob
Mar 19, 2009
Thanks All, so far so good.
I may be back when I discover I don’t know how to automate the naming/saving of these new files.

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