Acceleration of computer-generated holograms using tilted wavefront recording plane method

Abstract

Computer Generated Holograms (CGH) are generated on computers; however, a great deal of computational power is required because the quality of the image is proportional to the number of point light sources of a 3D object. The Wavefront Recording Plane (WRP) method is an algorithm that enables reduction of the amount of calculations required. However, the WRP method also has a defect; it is not effective in the case of a 3D object with a deep structure. In this study, we propose two improved WRP methods: "Least Square Tilted WRP method" and "RANSAC Multi-Tilted WRP method."

Recent progress in computer-generated holography for three-dimensional scenes

“…Advanced techniques, including combination with the LUT-based method [30], implementation using a graphic processing unit (GPU) [31], and the tilted wavefront-recording plane [32], have been reported.…”

Acceleration of the calculation speed of computer-generated holograms using the sparsity of the holographic fringe pattern for a 3D object

“…To calculate the wavefront on the CGH plane from the virtual plane, Fourier transform based propagation such as Fresnel diffraction has been widely used [3][4][5][6][7][8][9][10][11][12]. Fourier transform based propagation reduces computational time of CGH calculation by using FFT.…”

“…There are various CGH calculation methods for 3-D object, which are point light source (PLS) based methods [3][4][5][6][7][8][9][10][11][12], polygon based methods [13,14], RGB-D images based method [15], and so on. The PLS-based methods deal with 3-D object points as an aggregate of PLS.…”

“…However, approximation errors could be accumulated and propagated. Recently, wavefront recording plane (WRP) based approaches were proposed [10][11][12]. In [10], a computational complexity was reduced by calculating the wavefront (i.e., complex amplitude) on the WRP followed by Fresnel diffraction calculation with fast Fourier transform (FFT).…”

“…In [10], a computational complexity was reduced by calculating the wavefront (i.e., complex amplitude) on the WRP followed by Fresnel diffraction calculation with fast Fourier transform (FFT). In [11] and [12], multi-WRP and tilted WRP methods were proposed.…”