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降雪雪片の落下運動解析 Analysis for Falling Motion of Snowflakes 70042835 村本, 健一郎 松浦, 弘毅 香川, 隆夫 椎名, 徹 小池, 俊雄 映像情報メディア学会 | 本文データは学協会の許諾に基づきCiNiiから複製したものである Falling attitude of snowflakes were simultaneously photographed by two tv camerae from horizontal and vertical directions. These images were analyzed by image processor and personal computer. The attitude and location of each snowflakes were measured every 1/30 seconds from their two images. There were two patterns in falling motion of snowflakes, one was rotational trajectory, the other was spiral trajectry. And there was a tendency that the rotational speed of smaller snowflakes was faster than the bigger one, and the directions of revolution and rotation in falling snowflakes were the same in many cases. 映像情報メディア学会 = The Institute of Image Information and Television Engineers 1991-11-21 2017-10-03 jpn journal article VoR http://hdl.handle.net/2297/32499 https://kanazawa-u.repo.nii.ac.jp/records/8633 http://www.ite.or.jp/ http://ci.nii.ac.jp/naid/110003707230 AN00352231 0386-4227 テレビジョン学会技術報告 = ITEJ technical report 15 69 1 6 https://kanazawa-u.repo.nii.ac.jp/record/8633/files/TE-PR-MURAMOTO-K-1.pdf application/pdf 418.6 kB 2017-10-03