/ Edge Detection Filter from Clip Studio
Jorge Vidal
Clip Studio is a wonderful software for drawing comics. Kind of photoshop but improved for drawing purposes, includs a great page layout, 3d models, advanced perspective guides and special funtions concerning line and brushes.
I use it on my first long graphic novel “City of Lefties” ( wacom cintiq).
Update March 2023:
Latest version 2023 brings very nice improvments, like hands capture!!!