2D/3D image (facial) comparison using camera matching
2D/3D image (facial) comparison using camera matching
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DOI：
10.1016/j.forsciint.2005.11.004
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发表时间：
2006-11-10
影响因子：
2.2
通讯作者：
Ruifrok, Arnout C. C.
中科院分区：
文献类型：
--
作者：
Goos, Mirelle I. M.;Alberink, Ivo B.;Ruifrok, Arnout C. C.
犯罪者和嫌疑人的图像的法医面部比较中的一个问题是，面部中的固定解剖点之间的距离根据相机的位置和取向而强烈变化，所述固定解剖点形成用于客观的人体测量比较的良好起点。在合作的嫌疑人的情况下，可以使用例如激光扫描设备拍摄3D图像。通过将3D图像投影到2D图像上，其中嫌疑人的头部处于与犯罪者的头部相同的姿势，使用相同的焦距和像素纵横比，固定点之间的距离（的比率）的数值比较变得可行。进行了一项实验，其中，从两个3D扫描和一个2D图像的两个同事，男性和女性，并使用7个固定的解剖位置在脸上，比较匹配和不匹配的情况下。使用这种方法，不匹配的一对不能从匹配的一对面孔中区分出来。面部表情和图像分辨率都或多或少是最佳的，研究结果并不鼓励在识别过程中使用人体测量参数。不过，还需要对更大规模的面部比较进行更多的研究。(c)2005爱思唯尔爱尔兰有限公司保留所有权利。
A problem in forensic facial comparison of images of perpetrators and suspects is that distances between fixed anatomical points in the face, which form a good starting point for objective, anthropometric comparison, vary strongly according to the position and orientation of the camera. In case of a cooperating suspect, a 3D image may be taken using e.g. a laser scanning device. By projecting the 3D image onto a 2D image with the suspect's head in the same pose as that of the perpetrator, using the same focal length and pixel aspect ratio, numerical comparison of (ratios of) distances between fixed points becomes feasible. An experiment was performed in which, starting from two 3D scans and one 2D image of two colleagues, male and female, and using seven fixed anatomical locations in the face, comparisons were made for the matching and non-matching case. Using this method, the non-matching pair cannot be distinguished from the matching pair of faces. Facial expression and resolution of images were all more or less optimal, and the results of the study are not encouraging for the use of anthropometric arguments in the identification process. More research needs to be done though on larger sets of facial comparisons. (c) 2005 Elsevier Ireland Ltd. All rights reserved.