Exploded view generation for volumetric object is a useful method in surgical simulation, but it is very hard to perform
real-time operation. We present an interactive method to determine interesting regions and to render a scene with varying
volume datasets in real-time. In general, since conventional methods are designed to solve the problem of occlusion of
sub-volumes, they did not consider performance. Especially, exploded view generation methods are difficult to render a
scene in real-time even in the case of exploiting highly optimized method. Because they perform volume rendering after
defining rules to split an original volume and constraints to order sub-volumes. We present an interactive cutting
operation using GPU-based parallel processing and real-time rendering using block-based re-rendering method.
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