How to produce pencil-like images by pure image processing methods?

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Is it possible to reproduce the following pencil-like image by pure image processing?

Notes:

The original image: Fig 10 in paper http://www.cs.columbia.edu/cg/aircode/aircode-uist-2017-li-et-al.pdf
The pencil image: https://youtu.be/AeO4ydc8yqY?t=1m16s

asked Mar 31, 2018 at 11:34

1134 bronze badges

$\begingroup$ Canny edge detector? $\endgroup$

Cris Luengo
– Cris Luengo

2018-04-01 13:30:37 +00:00
Commented Apr 1, 2018 at 13:30
$\begingroup$ I am far from an expert, but I'd have a look into canny edge detector combined with hough transform. $\endgroup$

user20917
– user20917

2018-04-02 03:52:14 +00:00
Commented Apr 2, 2018 at 3:52

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