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Hokkaido University Collection of Scholarly and Academic Papers >
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Method for generating planar computer-generated hologram at free viewpoint from cylindrical object light
| Title: | Method for generating planar computer-generated hologram at free viewpoint from cylindrical object light |
| Authors: | Baba, Tatsuhiko Browse this author | | Kon, Ryotaro Browse this author | | Sakamoto, Yuji Browse this author →KAKEN DB |
| Keywords: | computer-generated hologram | | broadcast model | | cylindrical object light | | freeview point |
| Issue Date: | 2-Nov-2022 |
| Publisher: | Society of Photo-Optical Instrumentation Engineers (SPIE) |
| Journal Title: | Optical Engineering |
| Volume: | 61 |
| Issue: | 11 |
| Start Page: | 113101 |
| Publisher DOI: | 10.1117/1.OE.61.11.113101 |
| Abstract: | Computer-generated holography (CGH) is an ideal three-dimensional (3D) display technology, and head-mounted displays (HMDs) using CGH are expected to become the next-generation display devices without eye strain, which is called holographic HMDs (holo-HMDs). However, the CGH computational load is too much for a holo-HMD, which has limited processing power. We have devised a method that calculates the cylindrical object light on a sender, broadcasts the object light data to multiple holo-HMDs, and generates holograms matched to the planar display device on the holo-HMD. The cylindrical object light calculations, which take up most of the computational load, are performed on a high-performance computer with sufficient computational power. The cylindrical object light is transformed into an object light on the plane in accordance with the motion of the holo-HMD. The phase difference information between the complex amplitude distribution of the cylindrical object light and the object light on the plane corresponding to a free viewpoint position must be corrected. Using this method, objects placed near the center of the cylinder can be observed from a wide area, making it possible to support 3D image observation with multiple holo-HMDs. Experiments using an actual optical system demonstrated that planar transform was performed and that the computational load on a holo-HMD side was very small. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/88972 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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