Three Kinds of Optical Flow Technique: LCT, DAVE and DAVE4VM

DOI

10.2991/icmra-15.2015.191How to use a DOI?

Keywords

velocity field; active region; optical ow techniques; helicity

Abstract

Photospheric velocity field is an important parameter in studying solar eruptions. This parameter can be deduced by three kinds of optical flow techniques, i.e., LCT [1], DAVE and DAVE4VM [2]. By using an example of active region (AR) NOAA 12017, we have compared the distribution of the velocity field and magnetic helicity transport rate which calculated from the velocity field by these three methods. It is found that, the velocity fields are very similar for the results from LCT and DAVE method, while much different for those from DAVE4VM. However, the helicity transport rates are in similar trend for the results from all methods.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jihong Liu
AU  - Yanhui Dong
AU  - Yuhong Zheng
PY  - 2015/04
DA  - 2015/04
TI  - Three Kinds of Optical Flow Technique: LCT, DAVE and DAVE4VM
BT  - Proceedings of the 3rd International Conference on Mechatronics, Robotics and Automation
PB  - Atlantis Press
SP  - 984
EP  - 987
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmra-15.2015.191
DO  - 10.2991/icmra-15.2015.191
ID  - Liu2015/04
ER  -