mrboombastic
Joined: 08 Feb 2016
Posts: 1
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 Posted: Mon Feb 08, 2016 1:29 pm Post subject: Distinguish dark Brown from blue/black in grayscale |
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First timer here, help would be much appreciated!
For my research I need to distinguish blue/black dye from dark brown (soil in this case). I use Photoshop CS5
This is an example of a photo after geometric distortion and the use of lasso tool:
Then I have adjusted contrast/brightness/hue/saturation with sometimes black/white option etc before using grayscale and I get this:
If you compare the second picture with the first you see that there are some dark brown parts also black/gray while I want them white or at least a totally different pixel number than blue and black. What can I change in my steps to make sure this doesn't happen, without changing the picture too much. |
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