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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ºñµð¿À ¿µ»óÀÇ ºñÁöµµ ¿µ»ó Á¤ÇÕÀ» ÀÌ¿ëÇÑ ÆĶû À̵¿ ¼Óµµ ÃßÁ¤
¿µ¹®Á¦¸ñ(English Title) Wave Celerity Estimation using Unsupervised Image Registration from Video Imagery
ÀúÀÚ(Author) ±èÁø¾Æ   ±èÀçÀÏ   ½Å¼º¿ø   Jinah Kim   Jaeil Kim   Sungwon Shin  
¿ø¹®¼ö·Ïó(Citation) VOL 46 NO. 12 PP. 1296 ~ 1303 (2019. 12)
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(Korean Abstract)
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(English Abstract)
In this paper, we propose an image registration method based on unsupervised learning to estimate wave celerity by tracking wave movements using a large amount of video imagery. It is difficult to estimate the wave celerity accurately using physics-based modeling in the coastal region, owing to the limitations of in-situ measurement and the high nonlinearity of wave phenomena itself as well as high complexity from nonlinear interactions. In order to estimate wave celerity, the proposed method learns the nonlinear wave behavior from the video imagery. Autoencoder is applied to separate hydrodynamics scenes from environmental factors, such as daylights. The displacement vector of propagating waves is computed by non-linear spatio-temporal image registration. The wave celerity is estimated by accumulating the displacement vectors along time. In this paper, we compare the wave celerity measurement with conventional image processing methods and actual measurement using sensors for accuracy evaluation.
Å°¿öµå(Keyword) ºñÁöµµ ÇнÀ   ¿µ»ó Á¤ÇÕ   ÆĶû À̵¿ ¼Óµµ   ºñµð¿À ¿µ»ó   unsupervised learning   image registration   wave celerity   video imagery  
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