A technique similar to magnification fields in information visualization is hereby applied. The technique produces a single view of a complete virtually dissected colon. The dashed cross-section line produces a double appearance of a polyp. Surface obtained after nonlinear ray casting. It can be observed that the sampling of the surface is nonuniform.
Solid circles indicates double polyp appearance areas.
Dashed circles indicate undersampled areas. Initial Tc corresponding to a 128x171 grid. Tc after 960 iterations of the algorithm. Tc after 1687 iterations. Resampling after the nonlinear 2D scaling.