Hi every one,
Some one told me that he works on a drilling machine. the machine drills wood to make 3d wooden faces like the ones in the following images
The machine reads black and white photos in the following way:
1- the black points are the deep parts of the 3d wooden face which the machine is going to make or hew.
2- gray points are the less deep parts that the machine may not drill or hew much.
3- white points are the parts that the machine may not drill or hew at all.
so he needs to convert the colored photos he has to be something similar to this photo
to get a result similar to the result explained in this photo
but unfortunately he do not know how to do that using gimp. I hope gimp experts will help me & him to do that.
Thanks in advance