Constraint adaptive Loop subdivision surface
约束自适应Loop曲面细分

Adaptive subdivision surfaces have been widely used in segments to reduce subdivision times and the number of faces. However, a problem of the cracks between the different sub-levels fitting in adaptive subdivision resulted the surfaces could not be connected smoothly. This paper proposed the adaptive subdivision method based on the facet, with the main idea of the depth through the region a higher split triangle neighborhood. According to the number of cracks, the insertion point connected with a 1-neighborhood mesh, thereby reducing depth of difference between the high regional and high low regional, the different degree of sub-segments will be transited smoothlyabstract.