Sub-D (Subdivision)
source:
http://en.wikipedia.org/wiki/Subdivision_surface

Subdivision surface是3D計算機圖學的一個領域,藉由粗糙的線性多邊形網格的平滑呈現出來。經過遞歸的模型細分平滑計算過程後粗糙的表面會呈現平滑的面,是以逼近的方式產生接近平滑的表面。
---Wikipedia
A subdivision surface, in the field of
3D computer graphics, is a method of representing a smooth
surface via the specification of a coarser
piecewise linear polygon mesh. The smooth surface can be calculated from the coarse mesh as the
limit of a
recursive process of subdividing each polygonal
face into smaller faces that better approximate the smooth surface.
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