08-26-2018, 05:27 PM
(08-26-2018, 11:42 AM)Grumpy gnome Wrote: I have a 256 greyscale image with a contour map of an area, is there a way of splitting wach greyscale step into a separate image without having to create a new layer and sample the grey value manualy
Is this really what you want to do? The gray areas have smooth edges, which means their edge pixels have intermediate values. If you want to generate a layer by gray value, you will have many more than you think, many of these being dotted lines.
The screenshot you posted is a low-quality JPEG, so it's difficult to see what you are working with. For instance the lightest grey area has a darker rim, but I can't tell if its the original picture or a JPEG artifact.