A mixed OpenGL/ray-tracing rendering of a marble statue using the Texture Controller texture modifier described in "G. Papaioannou, T. Theoharis, A. Boehm, A Texture Controller, The Visual Computer, Springer-Verlag, 14(10), pp 488-496, 1998. ".
	Rendering of a piece of wood using the Texture Controller texture modifier described in "G. Papaioannou, T. Theoharis, A. Boehm, A Texture Controller, The Visual Computer, Springer-Verlag, 14(10), pp 488-496, 1998. ".
	Use of the optic flow algorithm described in "M. Hatzitheodorou, A. Karabassi, G. Papaioannou, A. Boehm, T. Theoharis, Stereo Matching Using Optic Flow, Journal of Real Time Imaging, Academic Press" to detect the motion of a small polygonal shape.
	Rendering of a snow covered house. The snow comprises of many hundreds of particles which were placed in the scene using the method described in "E.A. Karabassi, G. Papaioannou, T. Theoharis, Intersection Test for Collision Detection in Particle Systems, ACM Journal of Graphics Tools".
	Slime accumulation on a duct grating. The accumulation simulation  uses the collision detection algorithm described in "E.A. Karabassi, G. Papaioannou, T. Theoharis, Intersection Test for Collision Detection in Particle Systems, ACM Journal of Graphics Tools".
	Pile of wall fragments made of stone. All fragments are  plaster models digitized with Microscribe3D.
	Bottle near a lake shore. This is a color plate from the book "Graphics: Theory and Algorithms" that demonstrates the use of texture hierarchies.
	Demonstration of bump mapping. Taken from the book "Graphics: Theory and Algorithms".
	Example of ray-tracing  from the book "Graphics: Theory and Algorithms".
	The use of radiosity to enhance realism of ray-traced scenes. Color plate from the book "Graphics: Theory and Algorithms".
	"Oops!", Cover page image from the book "Graphics: Theory and Algorithms".
	Digitized right coronary artery angiography, used in the PATRA project, courtesy of OCSC.
	Isolated artery from the above image, using the Angioenhancer module, developped for the PATRA project, by A.Karabassi and G.Papaioannou.
	Gallery of voxelized images.
	Patch twister movie
	Gallery of images and demos (with source code) for a fast and simple technique to create fur.