A collection of 2200 microscopic sections was recently recovered at the Netherlands Ophthalmic Research Institute and the Department of Anatomy and Embryology of the Academic Medical Centre in Amsterdam. The sections were created thirty years ago and constitute the largest and most detailed study of human orbital anatomy to date. In order to preserve the collection, it was digitised. This paper...

In this paper we present a compression technique for efficiently representing boundary objects from volumetric data-sets. Exploiting spatial coherency within object contours, we are able to reduce the size of the volumetric boundary down to the size of just a few images. Allowing for direct volume rendering of the down-scaled data in addition to compression ratios up to 250:1, interactive volum...

In this paper an interactive volume rendering technique is presented which is based on a novel visualization model. We call the basic method “bubble model” since iso-surfaces are rendered as thin semi-transparent membranes similarly to blown soap bubbles. The primary goal is to develop a fast previewing technique for volumetric data which does not require a time-consuming transfer function spec...

In this paper, a simple and efficient solution for combining shear-warp volume rendering and the hardware graphics pipeline is presented. The approach applies an inverse warp transformation to the Z-Buffer, containing the rendered geometry. This information is used for combining geometry and volume data during compositing. We present applications of this concept which include hybrid volume rend...

HIGH-QUALITY VOLUME RENDERING OF MEDICAL DATA FOR VIRTUAL ENVIRONMENTS Andrea Kratz, Markus Hadwiger, Rainer Splechtna, Anton Fuhrmann, Katja Bühler VRVis Research Center

Manual opacity transfer function editing for volume rendering can be a difficult and counter-intuitive process. This paper proposes a logarithmically scaled editor, and argues that such a scale relates the height of the transfer function to the rendered intensity of a region of particular density in the volume almost directly, resulting in much improved, simpler manual transfer function editing.

Recent advances in PC graphics hardware like the VolumePro 500-2X and GeForce 3 have resulted in remarkable volume rendering performance. However, the limited amount of video memory found on a single card prohibits its use in large-scale volume graphics applications. The trend has thus been to make use of the combined rendering power and storage capacity of multiple graphics cards to achieve in...