Automatic polygon mesh repair and simplification for three-dimensional human modeling

We present a new approach to repair degenerated and self-intersected mesh of digitized human models, which automatically transforms a raw digitized mesh into a single manifold and closed triangle mesh. The algorithm interactively removes growing neighborhoods of undesired elements and fills resulted surface gaps to yield meshes which subject to user-specified quality criteria. We demonstrate our experimental results by multiple sets of low-quality original models with qualitative measurements compared with a number of existing methods. The results show that the proposed method produces high visual quality meshes with minimal changes of the original mesh appearances.

Conformity of Perception of Figure Inversion in Children

This pilot investigation of children's perception of figure inversion was an attempt to ascertain the degree of uniformity in perception of figure inversion among preprimary and primary grade children. Ss of each age group were shown pieces of identical figures representing a part of a triangle but one figure was turned 180° from the other. Ss were asked to indicate whether each figure was upside down. A chi square test indicated that preprimary children and primary children perceived figure inversion differently. Primary children's perception of figure inversion was in greater agreement with the hypothetical model propounding a relation between the degree of conformity in perception of figure inversion and the presented figure's nearness to the fully closed triangle.