RayLab is a simple, portable ray tracer for producing 3D images. It uses a custom text-based scene description language, and supports several mathematical shapes, as well as CSG operations (constructive solid geometry).
AKtive Media is an ontology based cross-media annotation (Images and Text) system. Our goal is to automate the process of annoation by suggesting knowledge to the user in an interactive way while the user is annotating and hence minimizing user effort.