![]() To overcome this problem, the researchers combined an SLM with a diffuser that enables multiple image planes to be separated by a much smaller amount without being constrained by the properties of the SLM. However, today's holograms are limited in terms of quality because current SLM technology allows only a few low-resolution images to be projected onto sperate planes with low depth resolution. "Our approach could also improve holography-based optical encryption by allowing more data to be encrypted in the hologram."Ĭreating a dynamic holographic projection typically involves using a spatial light modulator (SLM) to modulate the intensity and/or phase of a light beam. ![]() "Our new method overcomes two long-existing bottlenecks in current digital holographic techniques - low axial resolution and high interplane crosstalk - that prevent fine depth control of the hologram and thus limit the quality of the 3D display," said Gong. They show that it can achieve a depth resolution more than three orders of magnitude greater than state-of-the-art methods for multiplane holographic projection. In Optica, Optica Publishing Group's journal for high-impact research, Gong's team and Chengwei Qiu's research team at the National University of Singapore describe their new approach, called three-dimensional scattering-assisted dynamic holography (3D-SDH). This achieves high depth resolution, which is important for providing the depth cues that make the hologram look three dimensional. Producing a realistic-looking holographic display of 3D objects requires projecting images with a high pixel resolution onto a large number of successive planes, or layers, that are spaced closely together. It could also provide better 3D visuals without requiring a headset." "For virtual reality, our method could be used with headset-based holographic displays to greatly improve the viewing angles, which would enhance the 3D viewing experience. "A 3D hologram can present real 3D scenes with continuous and fine features," said Lei Gong, who led a research team from the University of Science and Technology of China.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |