Two Methods for Iso-Surface Extraction from Volumetric Data and Their Comparison
This work addresses the problem of evaluating iso-surface extraction methods for researchers in computer graphics, but it is incremental as it builds on existing techniques.
The paper compared two methods for iso-surface extraction from volumetric data, focusing on extraction time, triangle count, and geometric errors, and found no direct correlation between precision and human perception.
There are various methods for extracting iso-surfaces from volumetric data. Marching cubes or tetrahedra or raytracing methods are mostly used. There are many specific techniques to increase speed of computation and decrease memory requirements. Although a precision of iso-surface extraction is very important, too, it is not mentioned usually. A comparison of the selected methods was made in different aspects: iso-surface extraction process time, number of triangles generated and estimation of radius, area and volume errors based on approximation of a sphere. Surprisingly, experiments proved that there is no direct relation between precision of extracted and human perception of the extracted iso-surface