Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/EB887CFF-0A04-4443-9597-2D31823AC482 | - |
| Αναγνωριστικό | https://link.springer.com/article/10.1007%2Fs11042-017-5148-1 | - |
| Αναγνωριστικό | https://doi.org/10.1007/s11042-017-5148-1 | - |
| Γλώσσα | en | - |
| Μέγεθος | 31 pages | en |
| Τίτλος | Stereo system for remote monitoring of river flows | en |
| Δημιουργός | Bacharidis Konstantinos | en |
| Δημιουργός | Μπαχαριδης Κωνσταντινος | el |
| Δημιουργός | Moirogiorgou Konstantina | en |
| Δημιουργός | Μοιρογιωργου Κωνσταντια | el |
| Δημιουργός | Κουκίου Γεωργία | el |
| Δημιουργός | Koukiou Georgia | en |
| Δημιουργός | Giakos George C. | en |
| Δημιουργός | Zervakis Michail | en |
| Δημιουργός | Ζερβακης Μιχαηλ | el |
| Εκδότης | Springer Verlag | en |
| Περίληψη | In this article we present a video-based method for river flow monitoring. The proposed method aims at deriving efficient approximations of the river velocity using natural formations on the river surface. In order to overcome peculiarities of the flow, we propose to uniformly exploit all such structures that appear locally with short temporal duration. Towards this direction we explore the expanded capabilities of a stereoscopic camera layout with the dual observation fields and the potential of reverting projective deformations. By mapping to world coordinates, all spatial locations in the video reflect velocity as a uniform field, except for local flow variations. The velocity estimation is performed by computing the optical flow using a series of video frames, combining the information of the views of both cameras. The novelty of the proposed river flow estimation scheme lies on the fact that the accuracy of motion estimation is increased due to the use of the complementary views, which also enables the transition from a 2-Dimensional image-based velocity estimate to 3-Dimensional estimates. The estimated optical velocity is back-projected to the real world coordinates using the parameters extracted using the stereoscopic layout. The results on simulated and real conditions demonstrate that the proposed method is efficient in the estimation of the surface velocity and robust against locally disappearing formations, since it can compensate for a loss with other formations active in the field of view. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2018-03-26 | - |
| Ημερομηνία Δημοσίευσης | 2017 | - |
| Θεματική Κατηγορία | Optical flow | en |
| Θεματική Κατηγορία | Remote sensing | en |
| Θεματική Κατηγορία | River flow monitoring | en |
| Θεματική Κατηγορία | Stereo Vision | en |
| Βιβλιογραφική Αναφορά | K. Bacharidis, K. Moirogiorgou, G. Koukiou, G. Giakos and M. Zervakis,"Stereo system for remote monitoring of river flows," Multimed. Tools Appl., pp. 1-32, Sept. 2017. doi: 10.1007/s11042-017-5148-1 | en |
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