International Conference on 3D Systems and Applications (3DSA) 2017, pp.807-807
Language
English
Type
Conference Paper
Abstract
In the paper we demonstrate a directly-viewing, holographic HMD (head-mounted display) for optical reconstruction of binocular 3D contents. As a spatial light modulator (SLM), a LCoS (Liquid Crystal on Silicon) module is chosen in the demonstration as shown in Figure 1. Each LC panel for left-eye and right-eye can handle the pixel resolution of FHD (1920×1080) with its effective size of diagonal 0.55 inch, and data processing rate of 1 Gbps. In the holographic display system, computer-generated hologram (CGH) is delivered into the microdisplay panel (MDP) module via a board of display controller (BDC) with the interface of HDMI &USB ports connected to a PC. The MDP consists of two LCoSs for each eye. The MDP is connected to BDC via 32 pin-FFC Cables for data transfer as well as BLU cables for LED to be illuminated toward LCoS. To produce 360° holographic contents (1,024 frames) for the HMD-typed display 1) , we use a 3D graphic scene generated using Maya TM , from which a set of RGB image and depth map image is extracted at each viewing point: for instance, a model of a torus and cube. While a virtual camera captures the RGB-depth map by turning around near the scene' centre, camera shooting is performed at each rotational step with an angle of 0.352°, and a set of RGB and depth map of FHD resolution is saved for each frame. CGHs as shown in bottom of Figure 1 are generated from the algorithm of fast Fourier transform 2) using RGB-depth images (top and middle of Figure 1).
KSP Keywords
3D content, Computer generated holograms(CGH), Data processing, Data transfer, Depth Map, Depth image, Display System, Effective size, Fast Fourier Transform(FFI), Head mounted displays(HMD), Holographic display
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