  This paper introduces a new method to stylize 3D geometry. The key
observation is that the surface normal is an effective instrument to capture
different geometric styles. Centered around this observation, we cast
stylization as a shape analogy problem, where the analogy relationship is
defined on the surface normal. This formulation can deform a 3D shape into
different styles within a single framework. One can plug-and-play different
target styles by providing an exemplar shape or an energy-based style
description (e.g., developable surfaces). Our surface stylization methodology
enables Normal Captures as a geometric counterpart to material captures
(MatCaps) used in rendering, and the prototypical concept of Spherical Shape
Analogies as a geometric counterpart to image analogies in image processing.
