Illustrative Volume Rendering

This semester I’ve been doing a bit of shader programming (GLSL), and have implemented a series of illustrative techniques for volume rendering. The goal was to simulate some of the techniques used by illustrators and apply them to volumetric data (such as a CT-scan). The first is a CT-dataset rendered using a classic cartoon-shader, it also includes curvature-controlled contours:

Same dataset using gooch-shading, includes gooch-splashback and contours:

Last is a CT-scan of a gecko, using different contour techniques – curvature controlled for the edges, and a low exponent gradient curvature for a bit of shading near the edges.. Looks pretty close to something one might draw on a piece of paper.

Oh, and it’s all done in real time.. I love GPUs.. More of my illustravis stuff can be seen at:


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s