We enhanced the resolution characteristics of a threedimensional (3D) image using time-division multiplexing methods in a full-parallax multi-view 3D display. A time-division light-ray shifting (TDLS) method is proposed that uses two polarization gratings (PGs). As PG changes the diffraction direction of light rays according to the polarization state of the incident light, this method can shift light rays approximately 7 mm in a diagonal direction by switching the polarization state of incident light and adjusting the distance between the PGs. We verified the effect on the characteristics of 3D images based on the extent of the shift. As a result, the resolution of a 3D image with depth is improved by shifting half a pitch of a multi-view image using the TDLS method, and the resolution of the image displayed near the screen is improved by shifting half a pixel of each viewpoint image with a wobbling method. These methods can easily enhance 3D characteristics with a small number of projectors.
There are still have many serious problems with the real-existing scenes acquisition and generation of Hologram. In this research, an efficient CGH scheme that using orthographic projection images and depth map for real-existing scenes is proposed. The orthographic projection images and depth map are generated from 3D scanned model which is captured using depth camera. The proposed method generates Multiview images with full scanned real object with not only color information but depth information for hologram generation. The additional depth information can be used in additional artifact. This method reduces the number of angular samplings of the viewpoint images, provides all the human depth cues without producing any visible artifact.