Making Digital Elevation ModelsAccessible, Comprehensible, and Engaging through Real-Time Visualization

In this paper we present our initial experiments with the new high quality digital elevation model, “Danmarks Højdemodel-2015” (DHM) exposed as an interactive 3D visualization on web and in virtual reality. We argue that such data has great opportunities to spawn new business and new insight for the individual citizen if it is accessible, comprehensible and engaging

Realtime Cardiac Surgery Simulation

This thesis is an investigation of the possibilities of realtime surgical simulation, specifically within the domain of congenital heart diseases. The problem domain of surgery on the heart of an infant is presented and the primary information necessary for a pre-operative surgical simulation tool is identified. Through cooperation with surgeons, domain specific abstractions and simplifications with respect to soft tissue simulation is identified and used in the investigation of models for tissue deformation. In general it is not possible to calculate the deformation of tissue precisely in realtime. We therefore need to use simplified elastic models that approximate the real behavior of tissue. The most popular models for realtime interaction and response; the Finite Element model and the Spring Mass model are presented and discussed with respect to to surgery on the heart of an infant. A number of variations and extensions of the classic Spring Mass model are investigated to identify the characteristics that can use the domain specific knowledge o

Virtual Open Heart Surgery: Obtaining Models Suitable for Surgical Simulation

Abstract. We present a pre-processing strategy including imaging, segmentation, and model reconstruction that is well suited for previously published GPUaccelerated techniques for surgical simulation. In particular we describe these modeling steps as a prerequisite for our virtual open heart surgery simulator. A short description including relevant references is presented for each of the steps