How to make a hand drawn sketch pictures?

There are pictures of tractors. Is there only some kind of to machine about make her a sketch of Ala with a pencil? Examples here
spoiler
5e428c61e721c852568695.jpeg5e428c6e4af6c804061695.jpeg
April 7th 20 at 11:09
1 answer
April 7th 20 at 11:11
To play with the implementation of the Canny edge detector
Here did not understand what was happening and where - marlene_Wisozk commented on April 7th 20 at 11:14
@marlene_Wisozk, 5e4294ee0986d806048058.png
5e4294f95c339378340362.png
In a few clicks to process a million images (Batch Conversion), but the result of waiting long for a million pictures. - Percival commented on April 7th 20 at 11:17
@marlene_Wisozk, I gave you the name of the method it is easy to find a particular implementation. For exampleImageMagick or Photoshop
Links to the first.
IrfanView above you already cited. - elsa.Swi commented on April 7th 20 at 11:20

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