Real-time time-division color electroholography using a single GPU and a USB module for synchronizing reference light

Abstract

We propose real-time time-division color electroholography using a single graphics processing unit (GPU) and a simple synchronization system of reference light. To facilitate real-time time-division color electroholography, we developed a light emitting diode (LED) controller with a universal serial bus (USB) module and the drive circuit for reference light. A one-chip RGB LED connected to a personal computer via an LED controller was used as the reference light. A single GPU calculates three computer-generated holograms (CGHs) suitable for red, green, and blue colors in each frame of a three-dimensional (3D) movie. After CGH calculation using a single GPU, the CPU can synchronize the CGH display with the color switching of the one-chip RGB LED via the LED controller. Consequently, we succeeded in real-time time-division color electroholography for a 3D object consisting of around 1000 points per color when an NVIDIA GeForce GTX TITAN was used as the GPU. Furthermore, we implemented the proposed method in various GPUs. The experimental results showed that the proposed method was effective for various GPUs.

High-Speed 3-D Electroholographic Movie Playback Using a Digital Micromirror Device

“…In recent years, graphics processing units (GPUs) exhibit high computational performance at low cost. Thus, electroholography using GPUs was actively investigated by extant studies [15]- [27].…”

Color representation method using RGB color binary-weighted computer-generated holograms

“…Likewise, color electroholography using a single SLM has been investigated. Furthermore, the spacedivision method [7] , depth-division method [8,9] , and timedivision method [10][11][12][13][14] have been proposed.…”

Fast time-division color electroholography using a multiple-graphics processing unit cluster system with a single spatial light modulator

“…Color electroholography using a single SLM has also been investigated. The space-division method [24] , depth-division method [25,26] , and time-division method [27][28][29][30] have been proposed. In the space-division method and the depth-division method, there is the advantage that flicker does not occurred.…”

“…Previously [30] , we tried to overcome these difficulties using a single GPU and a universal serial bus (USB) module to synchronize the reconstructing light. A one-chip RGB light-emitting diode (LED) was used as the reconstructing light.…”