M.S. Uddin , H. Inaba , Y. Yoshida , Y. Itakura , M. Kasahara
{"title":"Large motion estimation by gradient technique - application to debris flow velocity field","authors":"M.S. Uddin , H. Inaba , Y. Yoshida , Y. Itakura , M. Kasahara","doi":"10.1016/S1464-1917(01)00060-5","DOIUrl":null,"url":null,"abstract":"<div><p>The gradient-based methods that are commonly used for the estimation of two-dimensional velocity field or optical flow behave poorly in the estimation of large motion. A preprocessing multiscale smoothing operation is proposed in the present paper to overcome this problem. Its effectiveness is confirmed by application to synthetic moving images and finally to the velocity field estimation of a natural debris flow along with a gradient-based method known as spatio temporal derivative space method.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 9","pages":"Pages 633-638"},"PeriodicalIF":0.0000,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00060-5","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1464191701000605","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
The gradient-based methods that are commonly used for the estimation of two-dimensional velocity field or optical flow behave poorly in the estimation of large motion. A preprocessing multiscale smoothing operation is proposed in the present paper to overcome this problem. Its effectiveness is confirmed by application to synthetic moving images and finally to the velocity field estimation of a natural debris flow along with a gradient-based method known as spatio temporal derivative space method.