Gernot Hoffmann	5   Computer Graphics
Cover Page Title Page Dancing Marionette Learning Marionette Image Processing Computer Graphics Geometry Scanner Photo Equipment Machines and Tools Electronics Info + Help + Print Links Documents	We have programmed the experimental graphics system ZEFIR in Pascal and Assembler. The ZEFIR Tutor shows interactively the generation of graphics, perspective mapping with a moveable camera, moveable light, automatic shadow, rotated objects and texture mapping of any source, including reflection. ZEFIR is the base of the lecture "Computer Vision", fast and reliable, educational and fun. Rendering of surfaces - filling the surface triangles with color, depending on surface and light, respecting hidden parts - is a rather difficult task, which we perform by software in a good quality, about 100.000 small triangles per second. Some commercial systems offer a higher speed by hardware, but one has to take into account, that we need anyway a software renderer to generate files of graphics e.g. with 3200 x 2400 pixels. Thus a qualified algorithm in Assembler code is essential. The whole system has been mainly developed to supply students with some basic knowledge of Computer Vision.
ZEFIR Tutor Image (60kByte)     <<<