Legacy ImageMagick Discussions Archive

When looking for vectorization process, I found a software called mkbitmap by Peter Selinger. It's function is for creating bitonal image as an input for potrace. The following is what the sotware can do :
Original


Thresholding without highpass filter
Thresholding with highpass filter
Are there an equivalent function in ImageMagick especially the one with highpass filter?
Because those function will be useful for creating coloring book for my student by using pre-existing color images.

Regards,
--------------------------------------
See also
mkbitmap man page

IM contains many operations (sch as "-edge") that may be combined to do this. I wouldn't be surprised if fmw42 has a script for this: http://www.fmwconcepts.com/imagemagick/index.php

This works reasonably well for me on your original color image. Lines are a bit more discontinuous than in your other software.


see
http://www.imagemagick.org/script/comma ... ns.php#lat

you can play around with the arguments to try to tweak it better.