Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
How to make a selection on a 16bit grayscale of only the darkest pixelspixels
#6
Ok, back from the land of feeling horribly unwell.

Another thought and possibility.  Change the relationship between pixel values to give something that makes colour select easier.

Duplicate layer
You can use levels or curves but an easy one is Colors -> Auto -> Equalise
Using the Color select tool and the draw mask option, clicking in the image and dragging left / right automatically adjusts the threshold and gives a visual (magenta) for the selection.

   

This yet another little demo:  https://i.imgur.com/rv3KlXF.mp4 and I have attached your 16 bit clip with a selection in place , is it anything like you need ?


Attached Files
.xcf   test-01.xcf (Size: 194.55 KB / Downloads: 51)
Reply


Messages In This Thread
RE: How to make a selection on a 16bit grayscale of only the darkest pixelspixels - by rich2005 - 04-18-2024, 07:39 AM

Forum Jump: