Classifying Perceptual Organization 
Boyer - 9 
• We consider the problem along two axes: Level of organization, 
and Dimensionality of the signal space. 
• Levels of organization (example from —► to) 
— Signal level: gray levels —* edge chains 
— Primitive level: edge chains —► concurves 
— Structural level: concurves —*• ribbons 
— Assembly level: ribbons —► Euclidean structures 
• Dimensionality of the signal space 
— 2D: typical static images 
— 3D (including 2^D): range images 
— 2D-ftime: dynamic image, image sequences 
— 3D+time: dynamic range images