Extracting surfaces from fuzzy 3D-ultrasound data
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Fast Ray-Tracing of Rectilinear Volume Data Using Distance Transforms
IEEE Transactions on Visualization and Computer Graphics
Preprocessing and Volume Rendering of 3D Ultrasonic Data
IEEE Computer Graphics and Applications
Accelerating volume animation by space-leaping
VIS '93 Proceedings of the 4th conference on Visualization '93
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There are two important factors to visualize ultrasound datasets for volume ray casting method. The first is an efficient method to skip over empty space and the second is an adequate noise filtering method. We propose a noise-insensitive hierarchical min-max octree. In preprocessing stage, we generate a filtered dataset and make a hierarchical min-max octree from the dataset. In rendering step, we exploit the hierarchical min-max octree only when rays skip over transparent region. If rays reach meaningful object, color and opacity values are computed from the original volume dataset. By adaptively using two datasets, our method increases image quality while reducing rendering time.