non rgb channel removal from tifs

AS
Posted By
Alex_Smotritsky
Nov 2, 2003
Views
453
Replies
6
Status
Closed
want to create an action which will strip out all channels from a tiff image except R, G and B. i’m not sure that it’s possible to do this with an action so i think i may be wasting my time. if anyone knows, please let me know.
Related Tags
channel remove rgb tiff

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MR
Mark_Reynolds
Nov 3, 2003
hmm

It IS actually possible but its not a very simple method and requires the file to be renamed – I can’t think off the top of my head if theres a simpler way than this, its an interesting challenge for anyone?

With my method you need to open a new empty file the same size as original – and duplicate the RGB channels into this file – this can be done with copy and paste or calculations or whatever. This new file will be "clean" of any alpha channels or paths, and it will then have to be re-saved with a new name. This process can be embedded in an action easily.
AS
Alex_Smotritsky
Nov 3, 2003
if i copy and paste wouldn’t the extra channels just get copied over? i’m just asking this because i’m a photoshop novice, i’ll try to implement your method, thanks a lot!
MR
Mark_Reynolds
Nov 3, 2003
No – Open your channels pallet. You copy and paste each channel seperately

• Highlight the red channel in your source document
• Select all
• Copy
• Move to your newly created document (your action will record this as "previous document")
• Highlight the red channel in the new document
• Paste
• Move back to source document

You need to do this same process for the other two channels – green and blue

The whole action will … open a new document based on the size of the old one – then run through the process outlined above for each channel. Then it will save the new file, allowing you to input your new name. and then close the source document.

Make sure you only have 2 documents open during this process – so that the action doesnt become confused.
AS
Alex_Smotritsky
Nov 3, 2003
I can make the action smart enough to open the new document at the same size as the original? Or does it not matter because that gets taken care of with the copy and paste?
AS
Alex_Smotritsky
Nov 3, 2003
I was able to implement the procedure you’ve outlined, thanks a lot Mark.
IG
ian green
Nov 3, 2003
???????/???????? ? ???????? ?????????:
want to create an action which will strip out all channels from a tiff
image except R, G and B. i’m not sure that it’s possible to do this with an action so i think i may be wasting my time. if anyone knows, please let me know.

—-[read-only off]—-
my first guess is:
make an action to save your image in some format which doesn’t support alpha channels
run it on your images
make a second action to write those stripped images as tiffs luck
—-[read-only on]—-

cu
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