2024-03-29T09:36:22Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/580232022-11-17T02:08:08Zhdl_2115_20053hdl_2115_145計算機合成ホログラムにおける微小面集合を用いた反射特性の表現法Calculation Method Using a Set of Microfacets for Computer-Generated Hologram Considering Reflectance Distributions山口, 一弘坂本, 雄児計算機合成ホログラム反射特性Blinnの反射モデル549Computer-generated hologram (CGH) is a technology that makes hologram data using a simulation of the recording process of holography. However, there are still many problems with CGH. We describe a calculation method that takes into consideration the reflectance distribution of object surfaces for CGH to improve the reality of reconstructed images. This method is based on the Blinn, or the Torrance-Sparrow, reflection models in CG. In these models, object surfaces are divided into a set of mirror-like microfacets. By calculating the phase differences of object surfaces with these models, various reflectance distributions for CGH are expressed. We did computer-simulated experiments, which compared the light intensity distribution of simulated values on each reflectance factor. We also did optical reconstruction experiments. These experiments showed that the proposed method makes various reflectance distributions of reconstructed images.映像情報メディア学会Journal Articleapplication/pdfhttp://hdl.handle.net/2115/58023https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/58023/3/CGH_20096312.pdf1342-6907映像情報メディア学会誌 : 映像情報メディア6312184618522009-12-01jpnpublisher