DynaFusion: a modeling system for interactive impossible objects

We describe DynaFusion, a modeling system for interactive impossible objects. Impossible objects are defined as multiple 3D polygonal meshes with edge visibility information and a set of constraints that define pointwise relationships between the meshes. A user can easily create such models with our modeling tool. The back-end of our system is a constraint solver that seamlessly combines multiple meshes in a projected 2D domain with 3D line orientations and that maintains coherence for each successive viewpoint, thereby allowing the user to rotate the impossible object without losing visual continuity of the edges. We believe that our system will stimulate the creation of innovative artworks.

[1]  R. Gregory.  The intelligent eye , 1970 .

[2]  Leonard McMillan,et al.  A Framework for Multiperspective Rendering , 2004, Rendering Techniques.

[3]  J. O. Robinson.  The Psychology of Visual Illusion , 1972 .

[4]  Mark W. Scott.  Implementing the continuous staircase illusion in OpenGL , 2002, SIGGRAPH '02.

[5]  Sachiko Tsuruno.  The animation of M.C. Escher's “Belvedere” , 1997, SIGGRAPH '97.

[6]  An investigation of the cues responsible for figure impossibility. , 1978, Journal of experimental psychology. Human perception and performance.

[7]  Peter Kovesi,et al.  Rotating the Impossible Rectangle , 2001, Leonardo Music Journal.

[8]  Maneesh Agrawala,et al.  Artistic Multiprojection Rendering , 2000, Rendering Techniques.

[9]  S. Sutherland.  Seeing things , 1989, Nature.

[10]  Karan Singh,et al.  Ryan: rendering your animation nonlinearly projected , 2004, NPAR '04.

[11]  R. Penrose,et al.  Impossible objects: a special type of visual illusion. , 1958, British journal of psychology.

[12]  M. B. Clowes,et al.  On Seeing Things , 1971, Artif. Intell..