Solar Shadow Positioning Algorithm

DOI

10.2991/icmemtc-16.2016.41How to use a DOI?

Keywords

solar shadow; Positioning; Algorithm; MATLAB.

Abstract

How to confirm the photographing location and the photographing date is an important aspect of video data analysis. Solar shadow positioning technique is a method to confirm the photographing location and date through analysis of solar shadow changes of objects in videos. According to the image-forming principle, the ratio of the measured coordinate value to the straight-bar height is equal to the ratio of the practical coordinate value to the straight-bar height. Therefore, videos can be imported into MATLAB to capture images at the required time interval. CAD can be used to measure the slanted coordinate of shadow points in images. Through coordinate transformation, the right-angle coordinate value in images can be confirmed. According to the proportional relation, the coordinate of the vertex of the straight-bar shadow can be confirmed according to the proportional relationship. Based on that, the potential photographing location can be confirmed according to models. To analyze the photographing location and date of videos, the coordinate of the vortex of the practical straight-bar shadow can be put into the model Question 3 to confirm the potential photographing location and date.

Copyright

© 2016, 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  - Wanqiao Wang
PY  - 2016/04
DA  - 2016/04
TI  - Solar Shadow Positioning Algorithm
BT  - Proceedings of the 2016 3rd International Conference on Materials Engineering, Manufacturing Technology and Control
PB  - Atlantis Press
SP  - 217
EP  - 221
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmemtc-16.2016.41
DO  - 10.2991/icmemtc-16.2016.41
ID  - Wang2016/04
ER  -