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graphicsmagick

Image to pencilsketch using graphicsmagick

I am new to imageprocessing. I want to convert an image to pencilsketch. I want to know how can i achieve the same with Graphicsmagick. Thanks in Advance.

Solution

  • It would be somewhat easier with ImageMagick than GraphicsMagick, as Anthony Thyssen has put together some excellent examples - but they rely on ImageMagick capabilities such as "aside-processing" in parentheses which GraphicsMagick lacks. They are here.

    However, you can do fairly simplistic stuff with GraphicsMagick. Let's start with this picture of the White House:

    enter image description here

    gm convert whitehouse.jpg -edge 1 -negate -normalize -colorspace Gray -blur 0x0.5 sketch.png

    enter image description here