Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
convert a layer to greyscale
#1
Every time i need to make a layer greyscaled, i need to load the layer as a whole new project, Image -> Mode -> greyscale, then convert back to RBG. Export it. Then load that image as a new layer to my project.

Can i simplify this more to just convert a layer to greyscale?
Reply
#2
Colors>Desaturate with three standard choices of color conversion, or, if you feel more adventurous, Color>Components>Channel mixer (and tick the "Monochrome" check box). In addition to working in a single layer, they will also take the selection in account.

<pedantic>Either choice gives you a gray layer (3 bytes per pixel, with R=G=B) but not a grayscale one (one byte/pixel)</pedantic>
Reply
#3
It is worth mentioning this article

http://blog.patdavid.net/2012/06/true-ps...-gimp.html

and if you read through it, the referenced script.
Reply
#4
Also, the weird recipe:
  • set the bucket-fill tool to "Saturation" mode
  • bucket-fill the layer with white
Why it works:
  • Alongside the usual RGB model, another possible color representation model is HSV (Hue, Saturation, Value), saturation  being how "colored" things are.
  • By setting the tool to "Saturation" mode, only the saturation of the painting color is used, in other words in each pixel, RGB is convert to HSV, S is set to 0, and HSV is converted back to RGB.
  • And removing the saturation is one way to make everything gray.
Reply


Forum Jump: