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Review of real-time reconstruction techniques for aerial-projection holographic displays

机译:空中投影全息显示实时重建技术综述

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Electroholography enables the projection of three-dimensional (3-D) images using a spatial-light modulator. The extreme computational complexity and load involved in generating a hologram make realtime production of holograms difficult. Many methods have been proposed to overcome this challenge and realize real-time reconstruction of 3-D motion pictures. We review two real-time reconstruction techniques for aerial-projection holographic displays. The first reduces the computational load required for a hologram by using an image-type computer-generated hologram (CGH) because an image-type CGH is generated from a 3-D object that is located on or close to the hologram plane. The other technique parallelizes CGH calculation via a graphics processing unit by exploiting the independence of each pixel in the holographic plane.
机译:电子全息照相术能够使用空间光调制器投影三维(3-D)图像。产生全息图所涉及的极大的计算复杂性和负担使得实时产生全息图变得困难。已经提出了许多方法来克服该挑战并实现3-D运动图像的实时重建。我们回顾了两种用于空中投影全息显示的实时重建技术。第一种通过使用图像类型的计算机生成的全息图(CGH)来减少全息图所需的计算负荷,因为图像类型的CGH是从位于全息图平面上或附近的3-D对象生成的。另一种技术是利用图形处理单元通过利用全息平面中每个像素的独立性来并行化CGH计算。

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