Claes Peter, Walters Mark, Clement John
Melbourne Dental School, University of Melbourne.
Ann R Australas Coll Dent Surg. 2010 Mar;20:56-8.
When confronted with facial dysmorphologies, three-dimensional (3D) facial harmony is preferably assessed with regard to normality. This, however, presents two major challenges. The first challenge is to define normality. What makes non-dysmorphic faces appear normal? The second challenge is to situate the craniofacial dysmorphology with respect to normality. What makes the dysmorphic face not appear to be normal? To tackle these challenges, a novel approach based on a Face Space is proposed. In essence, faces are represented as points in a High-dimensional space, the dimensions of which capture important sources of allowed facial variation within a normal population. To establish an aesthetic objective of a given dysmorphic face, the novel concept of the "normal equivalent" of that face via robust projection into the Face Space is proposed. This technique is demonstrated on an artificial example in which smiling whilst showing teeth is considered a surrogate for facial dysmorphology.
当面对面部畸形时，三维（3D）面部协调性最好参照正常情况进行评估。然而，这带来了两个主要挑战。第一个挑战是定义正常情况。是什么使得非畸形面部看起来正常？第二个挑战是将颅面部畸形相对于正常情况进行定位。是什么使得畸形面部看起来不正常？为应对这些挑战，提出了一种基于面部空间的新方法。本质上，面部被表示为高维空间中的点，该空间的维度捕捉了正常人群中允许的面部变化的重要来源。为了确立给定畸形面部的美学目标，提出了通过稳健投影到面部空间来确定该面部“正常等效物”的新概念。在一个人工示例中展示了这项技术，其中露齿微笑被视为面部畸形的替代情况。
