Semi-automatic generation of transfer functions for direct volume rendering.

In IEEE Symposium on Volume Rendering Proceedings. IEEE, October 1998.

Although direct volume rendering is a powerful tool for visualizing complex structures within volume data, the size and complexity of the parameter space controlling the rendering process makes generating an informative rendering challenging. In particular, the specification of the transfer function -- the mapping from data values to renderable optical properties -- is frequently a time-consuming and unintuitive task. Ideally, the data being visualized should itself suggest an appropriate transfer function that brings out the features of interest without obscuring them with elements of little importance. We demonstrate that this is possible for a large class of scalar volume data.

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