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+--- Thread: Removing unwanted color, make just b & w (/Thread-Removing-unwanted-color-make-just-b-w)
Removing unwanted color, make just b & w - carljong - 02-03-2022
Is there an easy way to make a photo of sheet music just black and white? I've been working on pages, using Color > Curves and this one turned out with yellow. I've tried a few suggestions on the internet, but no luck. Seems it should be simple.
I tried attaching my photo but keep getting an error.
Thanks
RE: Removing unwanted color, make just b & w - rich2005 - 02-03-2022
Is the image too large to attach ? png / jpeg /..etc have a 500 kb limit .xcf 2 MB
If too large, either crop down to a smaller representative size (less than forum limits) or post on an external site such as imgur.com or https://postimages.org or https://imgbb.com
RE: Removing unwanted color, make just b & w - EwertonMoreira - 02-03-2022
Can you change the image mode to Grayscale? Then use Colors -> Levels?
RE: Removing unwanted color, make just b & w - programmer_ceds - 02-03-2022
The Threshold tool might give you usable results.
RE: Removing unwanted color, make just b & w - Krikor - 02-03-2022
(02-03-2022, 11:19 AM)carljong Wrote: Is there an easy way to make a photo of sheet music just black and white? I've been working on pages, using Color > Curves and this one turned out with yellow. I've tried a few suggestions on the internet, but no luck. Seems it should be simple.
I tried attaching my photo but keep getting an error.
Thanks
I believe the tips from posts #2 and #3 at https://www.gimp-forum.net/Thread-removing-fold-shadow-highlight-from-a-scan could be useful to you.
RE: Removing unwanted color, make just b & w - Ofnuts - 02-03-2022
(02-03-2022, 11:19 AM)carljong Wrote: Is there an easy way to make a photo of sheet music just black and white? I've been working on pages, using Color > Curves and this one turned out with yellow. I've tried a few suggestions on the internet, but no luck. Seems it should be simple.
I tried attaching my photo but keep getting an error.
Thanks
You get a color shift because a color saturates before the others. You can convert the image to B&W using Colors ➤ Desaturate. Changing the image mode to grayscale is another way but it has implications...
RE: Removing unwanted color, make just b & w - carljong - 02-03-2022
(02-03-2022, 05:34 PM)Ofnuts Wrote:(02-03-2022, 11:19 AM)carljong Wrote: Is there an easy way to make a photo of sheet music just black and white? I've been working on pages, using Color > Curves and this one turned out with yellow. I've tried a few suggestions on the internet, but no luck. Seems it should be simple.
I tried attaching my photo but keep getting an error.
Thanks
You get a color shift because a color saturates before the others. You can convert the image to B&W using Colors ➤ Desaturate. Changing the image mode to grayscale is another way but it has implications...
Colors > Desaturate did the trick. Thanks