Create a sketch from a Photo

[chzesin]

Hi there,

Is there a way to achieve this: https://www.youtube.com/watch?v=Gyu2yPwiQvA

I have used the following command: convert <sourcefile> -colorspace gray -sketch 0x20+120 -threshold 50% <renderedfile>
but the effect is not ideal.

I am using the latest imagemagick version.

Regards,
Help required from Singapore

[snibgo]

Code: Select all

convert in.png ( +clone -negate -blur 0x6 ) -compose ColorDodge -composite -modulate 100,0,100 -auto-level out.png

I added "-auto-level" to the video instructions.

I suggest you watch the video again, and work out how it corresponds to the command.

[fmw42]

What is the exact IM version? Is it IM 6 or IM 7? What platform/OS? Please always provide that information, since syntax differs.

Input:


In IM 6 Unix syntax:

Code: Select all

convert test.png \( -clone 0 -negate -blur 0x5 \) -compose colordodge -composite \
-modulate 100,0,100 -auto-level test_sketch.png

In IM 7 Unix syntax:
In IM 6 Unix syntax:

Code: Select all

magick test.png \( -clone 0 -negate -blur 0x5 \) -compose colordodge -composite \
-modulate 100,0,100 -auto-level test_sketch.png

For Windows, change \( ... \) to ( ... ) and replace the line ending \ with ^

Result:


Change the blur value as desired.

If on a Unix-like system, see my bash shell scripts, sketch and sketcher at my link below.


EDIT: Sorry, snibgo, you must have posted while I was writing my post.