Some sexually motivated serial killers target victims on the basis of appearance. Therefore, multiple victims of a single serial killer are likely to have some facial features and geometries that are similar. The current research was undertaken to propose a technique, termed face similarity linkage, to evaluate whether victims of a serial killer have statistically more similar facial measurements than a randomly chosen person of the same gender. To test this, three of Ted Bundy's victims were randomly selected and anatomical landmarks were located and measured to produce proportionality indices of their faces. A random subject from an online database was used as a comparison. The results showed there were no statistically significant differences between the three of Bundy's victims, however there was significant difference between 11 of the 17 facial measurements of Bundy's victims when compared to a random person. This research serves as a proof of concept that, with more advanced means of data collection, may be a useful tool for law enforcement for linking serial homicides. The current method is relatively novel, and in need of expert systems interfaces to improve speed and application, which is outlined in the current study.

中文翻译：

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人脸相似性关联：针对性动机的连环杀手受害者的新颖生物识别方法

一些出于性动机的连环杀手基于露面而将受害者作为目标。因此，一个连环杀手的多个受害者可能具有相似的面部特征和几何形状。当前的研究是为了提出一种技术，称为面部相似性连锁，以评估连环杀手的受害者是否比随机选择的相同性别的人在统计学上更相似的面部测量值。为了对此进行测试，随机选择了泰德·邦迪（Ted Bundy）的三名受害者，并定位并测量了解剖标志，以产生其面部的比例指数。来自在线数据库的随机受试者被用作比较。结果显示，邦迪的三名受害者之间没有统计学上的显着差异，然而，与随机人相比，邦迪受害者的17个面部测量结果中有11个存在显着差异。这项研究可作为一种概念证明，可以通过更先进的数据收集手段，将执法手段与连环杀人罪联系起来。当前的方法相对新颖，并且需要专家系统接口来提高速度和应用，这在当前的研究中有所概述。