Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology

Solar Shadow Positioning Algorithm

Authors
Wanqiao Wang
Corresponding Author
Wanqiao Wang
Available Online March 2016.
DOI
https://doi.org/10.2991/icmmct-16.2016.183How 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.
Open Access
This is an open access article distributed under the CC BY-NC license.

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Volume Title
Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
Series
Advances in Engineering Research
Publication Date
March 2016
ISBN
978-94-6252-165-0
ISSN
2352-5401
DOI
https://doi.org/10.2991/icmmct-16.2016.183How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Wanqiao Wang
PY  - 2016/03
DA  - 2016/03
TI  - Solar Shadow Positioning Algorithm
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
PB  - Atlantis Press
SP  - 920
EP  - 923
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-16.2016.183
DO  - https://doi.org/10.2991/icmmct-16.2016.183
ID  - Wang2016/03
ER  -