Proceedings of the 2015 4th National Conference on Electrical, Electronics and Computer Engineering

# The Temporal and Spatial Positioning Model Based on the Principle of Analemmatic Sundial in Different Parameters

Authors
Yu Liu, Xuedong Zhu, Xuefa Xia
Corresponding Author
Yu Liu
Available Online December 2015.
DOI
10.2991/nceece-15.2016.199How to use a DOI?
Keywords
Shadow Trigonometric Model Analemmatic Sundial Principle |y/x| Scale Model Ginput Function Dynamic Measurement Error Filter Rule
Abstract

When analyzing the data of photos and videos, it’s very important to determine the shooting time and place. Usually, we can get the sun's shadow from the pictures and videos and establish different mathematical models to solve time and space positioning problems by the known parameters. Firstly, use basic amounts to establish Analemmatic sundial model; when obtaining a series of picture messages, you can get vertex coordinate data of a fixture’s sun shadow on the level ground. Then to establish |y/x| scale model by Orthogonal multinomial fitting method, which can solve the latitude and longitude separately, and select 1 ‰ screening indicator as the error correction to get exact location; About shooting time, according to |y/x| scale model determining the position longitude, using MATLAB to enumerate solar declination, then develop Dynamic measurement error filter rule, select the appropriate latitude and solar declination values to calculate shooting date; when getting a video recording a fixture shadow changes, use MATLAB function of Videoreader frame image, then use Rgb2gray Function convert into gray image, finally use Ginput Function reads the image coordinates. Use those to establish a comprehensive model to get the time and location of the video shoot.

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/).

Volume Title
Proceedings of the 2015 4th National Conference on Electrical, Electronics and Computer Engineering
Series
Advances in Engineering Research
Publication Date
December 2015
ISBN
10.2991/nceece-15.2016.199
ISSN
2352-5401
DOI
10.2991/nceece-15.2016.199How to use a DOI?
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/).

### Cite this article

TY  - CONF
AU  - Yu Liu
AU  - Xuedong Zhu
AU  - Xuefa Xia
PY  - 2015/12
DA  - 2015/12
TI  - The Temporal and Spatial Positioning Model Based on the Principle of Analemmatic Sundial in Different Parameters
BT  - Proceedings of the 2015 4th National Conference on Electrical, Electronics and Computer Engineering
PB  - Atlantis Press
SP  - 1124
EP  - 1129
SN  - 2352-5401
UR  - https://doi.org/10.2991/nceece-15.2016.199
DO  - 10.2991/nceece-15.2016.199
ID  - Liu2015/12
ER  -