GEONS
<p>Mar 19, 2011 02:37 PM
 
pictures of geons:  straight edges vs curved edges;
straight axis vers curved axis
profile:  constant  vs expanded vs  expanded and constant  etc.
 
nonaccidental properties in the diagram are assumed to correspond to nonaccid. props in 3D.
 
The major contribution of RBC is the proposal that the visual system extracts geons (or geometric</p>
<center><img alt="" border="1" align="right" src="images/rbcdemo.gif" width="169" height="123" /></center>
<p>ions) and uses them to identify objects.  <a href="javascript:winsize('geons.htm', 799,800);">Geons</a> are <b>simple volumes such as cubes, spheres, cylinders, and wedges.</b> RBC proposes that representations of objects are stored in the brain as structural descriptions. A s<b>tructural description contains a specification of the object’s geons and their interrelations (e.g., the cube is abov the cylinder). A perceived object is analyzed by the visual system, which parses the object into its constituent geon</b>s. 
 
nice clips of  rotational invariance,  size invariance and translational invariance.</p>