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首页> 外文期刊>Journal of forensic sciences. >The applicability of holography in forensic identification: a fusion of the traditional optical technique and digital technique.
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The applicability of holography in forensic identification: a fusion of the traditional optical technique and digital technique.

机译：全息术在法医鉴定中的适用性：传统光学技术和数字技术的融合。

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In this study, the applicability of holography in the 3-dimensional recording of forensic objects such as skulls and mandibulae, and the accuracy of the reconstructed 3-D images, were examined. The virtual holographic image, which records the 3-dimensional data of the original object, is visually observed on the other side of the holographic plate, and reproduces the 3-dimensional shape of the object well. Another type of holographic image, the real image, is focused on a frosted glass screen, and cross-sectional images of the object can be observed. When measuring the distances between anatomical reference points using an image-processing software, the average deviations in the holographic images as compared to the actual objects were less than 0.1 mm. Therefore, holography could be useful as a 3-dimensional recording method of forensic objects. Two superimposition systems using holographic images were examined. In the 2D-3D system, the transparent virtual holographic image of an object is directly superimposed onto the digitized photograph of the same object on the LCD monitor. On the other hand, in the video system, the holographic image captured by the CCD camera is superimposed onto the digitized photographic image using a personal computer. We found that the discrepancy between the outlines of the superimposed holographic and photographic dental images using the video system was smaller than that using the 2D-3D system. Holography seemed to perform comparably to the computer graphic system; however, a fusion with the digital technique would expand the utility of holography in superimposition.
机译：在这项研究中，检查了全息术在法医物体（如头骨和下颌骨）的3维记录中的适用性，以及重建的3D图像的准确性。记录原始对象的3维数据的虚拟全息图像在全息图板的另一侧目视观察，并很好地再现了对象的3维形状。另一类全息图像，即真实图像，聚焦在磨砂玻璃屏幕上，可以观察到物体的横截面图像。当使用图像处理软件测量解剖参考点之间的距离时，与实际物体相比，全息图像的平均偏差小于0.1毫米。因此，全息术可以用作法医物体的三维记录方法。检查了两个使用全息图像的叠加系统。在2D-3D系统中，对象的透明虚拟全息图像直接叠加到LCD监视器上相同对象的数字化照片上。另一方面，在视频系统中，使用个人计算机将由CCD相机捕获的全息图像叠加到数字化的摄影图像上。我们发现使用视频系统的全息和照相牙科图像叠加轮廓之间的差异小于使用2D-3D系统的全息图像。全息术的表现似乎与计算机图形系统相当。然而，与数字技术的融合将扩大全息术在叠加中的应用。

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