A contour propagation approach to surface filling-in and volume formation.

摘要: A new approach to surface and volume formation is introduced in response the question, "Why do some silhouettes look 3 dimensional (3D) others 2D?" The central idea that form information can propagate away from a "propagable segment" (PS) of occluding contour could have projected onto image visible portion cross-section surface. key property PS it exhibits abrupt curvature changes where meets rest contour. An algorithm described for filling curved surfaces PS: When copies are propagated into interior, they act as cross-sectional contours also exhibit with result nonmetric coding 3D-shape terms local ordinal orientation relationships scale, translation, rotation invariant.