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An Efficient Perspective Projection using $\textrm{VolumePro}^{TM}$ Hardware  

임석현 (인하대학교 전자계산공학과)
신병석 (인하대학교 컴퓨터학부)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.31, no.3_4, 2004 , pp. 195-203 More about this Journal
Abstract
VolumePro is a real-time volume rendering hardware for consumer PCs. However it cannot be used for the applications requiring perspective projection such as virtual endoscopy since it provides only orthographic projection. Several methods have been presented to approximate perspective projection by decomposing a volume into slabs and applying successive parallel projection to thou. But it takes a lot of time since the entire region of every slab should be processed, which does not contribute to final image. In this paper, we propose an efficient perspective projection method that makes the use of several sub-volumes with cropping feature of VolumePro. It reduces the rendering time in comparison to slab-based method without image quality deterioration since it processes only the parts contained in the view frustum.
Keywords
VolumePro; volume rendering; slab; subvolume; orthographic projection; perspective projection;
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