|
|||||
|
|
Fast calculation of computer generated hologram based on single Fourier transform for holographic three-dimensional display |
|
| Affiliation: | 1. School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China;2. Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Beihang University, Beijing 100191, China;3. Spatial Computing Convergence Center, Kwangwoon University, 447-1 Wolge-Dong, Nowon-Gu, Seoul 139-701, Republic of Korea;4. Ingenium College, Kwangwoon University, 447-1 Wolge-Dong, Nowon-Gu, Seoul 139-701, Republic of Korea;5. HoloDigilog Human Media Research Center, Kwangwoon University, 447-1 Wolge-Dong, Nowon-Gu, Seoul 139-701, Republic of Korea |
| Abstract: | We present an efficient method for the fast calculation of computer generated hologram (CGH). The 3D object is split into sub-layers according to its depth information. A 2D all-in-focus image is generated by sequential tiling all the layers in one plane. A Fourier hologram that contains all the information of 3D object is calculated from the fast Fourier transform (FFT) of the reassembled 2D image. By multiplying a pre-calculated multifocal off-axis digital phase mask (DPM) to the Fourier hologram, the content of each layer is axially relocated to different depth in the Fourier transform optical system to reconstruct the 3D object. The computation speed of the proposed method is greatly improved with only single FFT calculation process. Both of simulation and experimental results proves the validation of the proposed method. |
| Keywords: | Holographic display Computer holography Three-dimensional display |
| 本文献已被 ScienceDirect 等数据库收录！ | |