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首页> 外文期刊>Electronics and Communications in Japan. Part 3, Fundamental Electronic Science >Autostereoscopic Visualization of Volume Data Using Computer-Generated Holograms
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Autostereoscopic Visualization of Volume Data Using Computer-Generated Holograms

机译：使用计算机生成的全息图自动立体显示体积数据

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摘要

There is a need for methods to display 3-dimensional data (volume data) obtained from such procedures as computer tomography (CT), magnetic resonance imaging (MRI), and 3-dimensional radar in a form that can easily be interpreted by humans. Methods that present such data via a 3-dimensional display are able to show the 3-dimensional image directly to humans and are well adapted to allow the recognition of 3-dimensional structure. In particular, 3-dimensional displays using holography are especially suited to assisting humans in interpreting 3-dimensional information. In this paper we propose a volume rendering computer-generated hologram (CGH) method that calculates a hologram directly from volume data using CGH technology without employing any intermediary images or photographic procedures. Since in this method the hologram is generated computationally, there is significant flexibility in how the 3-dimensional image can be displayed. As well as enabling images to be displayed with shading, a whole range of different 3-dimensional display techniques are possible; for example, at one extreme we can display only the surfaces in the volume data making the internal regions opaque, while by introducing transparency we can make the internal structures visible. We have confirmed the effectiveness of the proposed method by using it to create computer-generated holograms on the basis of 3-dimensional medical MRI data and conducting optical experiments.
机译：需要一种方法来显示从诸如计算机断层摄影（CT），磁共振成像（MRI）和3维雷达的过程中获得的3维数据（体数据），其形式可以被人类轻易地理解。通过3维显示器呈现这种数据的方法能够直接向人类显示3维图像，并且非常适合于识别3维结构。特别地，使用全息术的3维显示器特别适合于帮助人类解释3维信息。在本文中，我们提出了一种体积渲染计算机生成的全息图（CGH）方法，该方法可直接使用CGH技术从体积数据中计算全息图，而无需使用任何中间图像或照相程序。由于在这种方法中全息图是通过计算生成的，因此在如何显示3D图像方面具有很大的灵活性。除了可以用阴影显示图像外，还可以使用各种不同的3D显示技术。例如，在一种极端情况下，我们只能在体积数据中显示使内部区域不透明的表面，而通过引入透明性，我们可以使内部结构可见。通过在3维医学MRI数据的基础上创建计算机生成的全息图并进行光学实验，我们已经证实了该方法的有效性。

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