My research in computer graphics focuses on the development of methods and systems to increase the efficiency and effectiveness of user interaction and manipulation of visual data. Interactivity is a fundamental characteristic of most computer graphics applications, yet user interaction processes are often extremely cumbersome and time consuming. Therefore, I believe that improving user interac...

Computers have become a powerful tool for the rapid and economical production of pictures. There is virtually no area in which graphical displays cannot be used to some advantage, and so it is not surprising to find the use of computer graphics so widespread. Although early applications in engineering and science had to rely on expensive and cumbersome equipment, advances in computer technology...

L.E.G.O. is an interactive graphics system for creating, viewing and manipulating two−dimensional geometric figures and three−dimensional objects. The fundamental operations of the L.E.G.O. language form an electronic metaphor of geometric constructions with a straightedge and compass. This is consistent with the primary application of L.E.G.O., i.e. computer−assisted instruction of geometry. L...

During the years 1970-1973, the Laboratory of Information Processing Science at the Helsinki University of Technology carried out the Computer Graphics Project (CGP). The activities focused on the problems of producing newspaper text, advertisements, and complete pages using interactive computer graphics. The project and its commercial spinoff, Typlan, as well as the BUNPAPS continuation projec...

It has often been pointed out that the different architecture models proposed for interactive computer graphics were too much imprecise. Global architecture models intended to define the macromodules that constitute such systems do not precise the functional description nor the interface of these modules. Multi-agent models, intended to define the micro-structure of the building blocks of such ...

3D paint systems opened the door to new texturing tools, directly operating on 3D objects. However, although time and effort was devoted to mesh parameterization, UV unwrapping is still known to be a tedious and time-consuming process in Computer Graphics production. We think that this is mainly due to the lack of welladapted segmentation method. To make UV unwrapping easier, we propose a new s...

We present a case-study of building a real-time urban visualisation for the Greater London area. The model that we have created integrates a variety of high quality mapping resources, but emphasises real-time access to the whole model. The model is extensive (a roughly circular area of 60km diameter), and densely populated with polygon detail down to side-walks and aerial photography in limited...