Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449458 | Optics Communications | 2017 | 6 Pages |
Abstract
Fast hologram calculation methods are critical in real-time holography applications such as three-dimensional (3D) displays. We recently proposed a wavelet transform-based hologram calculation called WASABI. Even though WASABI can decrease the calculation time of a hologram from a point cloud, it increases the calculation time with increasing propagation distance. We also proposed a wavefront recoding plane (WRP) method. This is a two-step fast hologram calculation in which the first step calculates the superposition of light waves emitted from a point cloud in a virtual plane, and the second step performs a diffraction calculation from the virtual plane to the hologram plane. A drawback of the WRP method is in the first step when the point cloud has a large number of object points and/or a long distribution in the depth direction. In this paper, we propose a method combining WASABI and the WRP method in which the drawbacks of each can be complementarily solved. Using a consumer CPU, the proposed method succeeded in performing a hologram calculation with 2048Ã2048 pixels from a 3D object with one million points in approximately 0.4Â s.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Daisuke Arai, Tomoyoshi Shimobaba, Takashi Nishitsuji, Takashi Kakue, Nobuyuki Masuda, Tomoyoshi Ito,