Programmable motion effects

Although animation is one of the most compelling aspects of computer graphics, the possibilities for depicting the movement that make dynamic scenes so exciting remain limited for both still images and animations. In our work, we experiment with motion depiction as a first-class entity within the rendering process. We extend the concept of a surface shader, which is evaluated on an infinitesimal portion of an object’s surface at one instant in time, to that of a programmable motion effect, which is evaluated with global knowledge about all portions of an object’s surface that pass in front of a pixel during an arbitrary long sequence of time. With this added information, our programmable motion effects can decide to color pixels long after (or long before) an object has passed in front of them. In order to compute the input required by the motion effects, we propose a 4D data structure that aggregates an object’s movement into a single geometric representation by sampling an o...

• Type: Journal
• Year: 2010
• Where: SIGGRAPH
• Authors: Johannes Schmid, Robert W. Sumner, Huw Bowles, Markus Gross
• Keywords: Arbitrary Long Sequence, Computer Graphics, Motion Effects, Programmable Motion Effects, SIGGRAPH 2010