Reconfigurable image projection holograms
Reconfigurable image projection holograms
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DOI：
10.1117/1.2390678
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发表时间：
2006-11-01
影响因子：
1.3
通讯作者：
Pappu, Ravikanth
中科院分区：
文献类型：
--
作者：
Plesniak, Wendy;Halle, Michael;Pappu, Ravikanth
介绍了可重构图像投影全息图和一种计算三维场景的可重构图像投影全息图的方法。RIP全息图通过一个或多个全息重建的投影表面投影3D场景的一个或多个视差视图系列。投影表面被定义在全息图重建可变数量的真实的或虚拟图像的位置处，这些图像被称为全息图元，它们共同组成表面并构成视图像素信息的出射光瞳。通过将场景的2-D视差视图的扫描与一个或多个预先计算的衍射元件的实例组合来有效地组装RIP全息图，所述衍射元件被允许在全息图上重叠，并且重构全息图元。该技术提高了传统的立体图的图像质量，同时提供类似的高效计算：它采用了逼真的计算机图形渲染或高质量的光学捕捉的场景，它消除了一些文物往往存在于传统的计算立体图，其基本的乘法和累加操作是适合于硬件实现。RIP方法根据场景的采样要求和给定显示架构的约束条件，同时提供捕获和投影的灵活调整。(c)2006年，由光学仪器工程师协会（Society of Photo-Optical Instrumentation Engineers）主办。
We introduce reconfigurable image projection (RIP) holograms and a method for computing RIP holograms of three-dimensional (3-D) scenes. RIP holograms project one or more series of parallax views of a 3-D scene through one or more holographically reconstructed projection surfaces. Projection surfaces are defined at locations at which the hologram reconstructs a variable number of real or virtual images, called holographic primitives, which collectively compose the surface and constitute exit pupils for the view pixel information. RIP holograms are efficiently assembled by combining a sweep of 2-D parallax views of a scene with instances of one or more precomputed diffractive elements, which are permitted to overlap on the hologram, and which reconstruct the holographic primitives. The technique improves on the image quality of conventional stereograms while affording similar efficient computation: it incorporates realistic computer graphic rendering or high-quality optical capture of a scene, it eliminates some artifacts often present in conventional computed stereograms, and its basic multiply-and-accumulate operations are suitable for hardware implementation. The RIP approach offers flexible tuning of capture and projection together, according to the sampling requirements of the scene and the constraints of a given display architecture. (c) 2006 Society of Photo-Optical Instrumentation Engineers.