Computer Aided Geometric Design

Computer Aided Geometric Design (CAGD) is concerned with making shapes. 3D models are central in many applied fields from animation film and TV to more practical areas such as engineering, architecture and medical image processing.

Contact: Ass.Prof. Dr. Ursula Augsdörfer

Procedural Modelling

Procedural modeling is an umbrella term for a number of techniques in computer graphics to create 3D models and textures from sets of rules.  We investigate ways on extending the current state of the art of procedural modelling techniques to describe a wider range of shapes efficiently using rule based design.

Contact: Ass.Prof. Dr. Ursula Augsdörfer

Physics-based Modelling

Instead of modifying the shape by moving points on the surface, one can define material properties for the model and apply forces to modify the shape. In this way we can specify interesting new modelling operations.

Contact: Ass.Prof. Dr. Ursula Augsdörfer

3D Object Retrieval

The goal of 3D Object Retrieval research is to find effective and efficient similarity functions to allow searching, ranking and clustering of 3D object data for similarity. This is a challenge as 3D Objects typically comprise many different shapes and visual appearance properties, in addition to different material and functional properties. Our work falls into the following areas: Feature-based 3D Similarity Search, Evaluation of 3D Retrieval Methods, Restoration of 3D Archaeologic Data, and Visual Exploration of 3D Repositories.

Contact: Prof. Dr. Tobias Schreck

3D Restoration

In 3D restoration, we consider the problem of completing/finishing objects which are partially incomplete. This is needed in cases like digital archaeology, where often the reassembly of fractured pieces does not lead to a complete objects, but missing parts persist. Our techniques studied include partial similarity search in repair repositories, and to exploit symmetry in the objects.

Contact: Prof. Dr. Tobias Schreck

Photo credits: © S. Yoon, M. Scherer, T. Schreck, and A. Kuijper. Sketch-based 3D model retrieval using diffusion tensor fields of suggestive contours. In ACM Multimedia, pages 193-200. ACM, 2010. // © TU Graz / S. Havemann // © A. Andreadis, R. Gregor, I. Sipiran, P. Mavridis, G. Papaioannou, and T. Schreck. Fractured 3D object restoration and completion. ACM SIGGRAPH Posters, 2015. // © Riffnaller-Schiefer, Andreas; Augsdörfer, Ursula H.; Fellner, Dieter W. : Isogeometric Analysis for Modelling and Design. Eurographics 2015 Short Paper.