templeblock / crosshatched

Stylize images and videos as crosshatched drawings

Use OpenCV to create crosshatch-style drawings and videos.

To use:

$ make
$ ./crosshatched sources/goldengate.jpg
$ ./crosshatched --laplacian sources/goldengate.jpg
$ ./crosshatched path/to/a/video.mp4

This script is optimized for images and videos >= 1080 pixels wide. You can also get decent results out of smaller images by tweaking the constants although bigger seems to be better in most cases.

The algorithm:

• Calculate the gradient of the image
• Draw short, connected bezier lines parallel and perpendicular to that gradient
• Generate the "edge gradient" from either the Laplacian or Canny (default) algorithms
• Using slightly tweaked rules, draw more bezier lines parallel to the edge gradient

Dependencies:

• g++ (Part of the GNU Compiler Collection)
• OpenCV

A note:

I'm generally a Python programmer so please forgive my shitty C++ code.