[l33tman]

You don't need to go through Gimp or Inkscape, this is built-in to the auto1111 ControlNet UI. You just dump the existing photo there and you can select a bunch of pre-processors like edge-detection or 3D depth extraction, which is then fed into ControlNet to generate a new image.

This is super powerful for example visualizing the renovation of an apartment room or house exterior.

[drschwabe]

Will have to play with those more thx for the headsup; I do find however for scribble outlines I like to often draw my own lines by hand instead of an auto-generated one to emphasize the absolute key areas that would not otherwise be auto-identified. Logo and 2D design for example where you may have very specifc text shape that needs be preserved regardless of contrast or perceivable depth.