A COMPARISON BETWEEN UNMANNED AERIAL VEHICLE AND AERIAL SURVEY ACQUIRED IN SEPARATE DATES FOR THE PRODUCTION OF ORTHOPHOTOS

  • FARSAT HEETO ABDULRAHMAN
  • RAAD AWAD KATTAN
  • SAMI MAMLOOK GILYANA
Keywords: UAV images, Aerial photos, GPS-RTK, DEM, orthophotomosaic

Abstract

The Unmanned aerial vehicles (UAV) have become convenient for many applications such as the
production of 3D ground models, orthophotos, road maintenance and dam monitoring, etc. The aim of this
paper is to investigate the accuracy of the orthophoto obtained from UAV images compared to the existing
orthophoto generated from aerial survey conducted by Vossing German Company in Duhok city, 2011
using GPS ground control point as a reference base. A digital elevation model (DEM) of the university
campus was created with the UAV vertical images. Low flight height of 80m was used with the rate of 70%
forward overlap and 40% side lap. An orthophoto is produced based on this DEM. To assess the accuracy
of UAV orthophotos and the existing orthophotos produced from aerial survey, 7 ground control points
(GCPs) were distributed and used for processing the orthophoto mosaic and DEM, 12 GCPs were used as
check points. The 19 GCPs were accurately measured using GPS-RTK. Discrepancy in horizontal position
of the GCPs measured on both orthophotos was obtained relative to the reference GPS base control points.
The UAV data were processed and analyzed using two softwares pix4D and Agisoft Photoscan. The RMS
errors obtained from both orthophotos is presented relative to the GPS base. Sub-centimetre accuracy for
horizontal position was achieved from the UAV orthophoto at low flight altitude.

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Author Biographies

FARSAT HEETO ABDULRAHMAN
Dept. Of Sur ve yi n g Engineering , College of Engineering, University of Duhok, Kurdistan Region - Iraq
RAAD AWAD KATTAN
Dept. Of Sur ve yi n g Engineering , College of Engineering, University of Duhok, Kurdistan Region - Iraq
SAMI MAMLOOK GILYANA
Dept. Of Sur ve yi n g Engineering , College of Engineering, University of Duhok, Kurdistan Region - Iraq

References

Brance P. Hudzietz, & Saripalli., S. (2012). An
experimental evaluation of 3D terrain mapping with
an autonomous helicopter. . doi:
10.5194/isprsarchives-XXXVIII-1-C22-137-2011.
DJI. (2018). Flight Controller Data Analysis Series
Tutorials (Vol. Part 1, pp. 1-2).
Eisenbeiß, H. (2009). UAV Photogrammetry. Press. In
Zurich. DISS. ETH NO. 18515.
Hedgecock, W., Maroti, M., Sallai, J., Volgyesi, P., &
Ledeczi, A. (2013). High-accuracy differential
tracking of low-cost GPS receivers. Paper presented
at the Proceeding of the 11th annual international
conference on Mobile systems, applications, and
services.
IDREES M, A., & ABULRAHMAN, F. H. (2020).
EVALUATION OF UAV-BASED DEM FOR
VOLUME CALCULATION. Journal of Duhok
University. Journal of Duhok University (JDU),
Vo.23 ((1)), p.p.11-24. doi:
https://doi.org/10.26682/sjuod.2020.23.1.2
Kattan, R., Abdulrahman, F., & Hassan, H. (2016).
Evaluating the accuracy of Google Earth DEM using
GPS Coordinates, Case study: Duhok Governorate.
Journal of University of Duhok (JDU), 19, 1-16.
Kung, O., Strecha, C., Beyeler, A., Zufferey, J. C.,
Floreano, D., Fua, P., & Gervaix, F. (2011, 2011 Sep
14–16, Zurich). The accuracy of automatic photogrammetric techniques on ultra-light UAV
imagery. . Paper presented at the UAV-g
2011-Unmanned Aerial Vehicle in Geomatics.
Nagai, M., Tianen, C., Shibasaki, R., Kumagai, H., &
Ahmed, A. (2009). Uav-borne 3-d mapping system by
multisensory integration. IEEE Transactions on
Geoscience and Remote Sensing, 47 ((3) ),
2371-2388.
Pix4D. (2020). Pix4D. . Retrieved May, 18, 2020
from https://www.pix4d.com/
Wierzbicki, D., Kedzierski, M., & Fryskowska, A.
(2015). Assesment of the influence of uav image
quality on the orthophoto production. The
International Archives of Photogrammetry, Remote
Sensing and Spatial Information Sciences, 40(1), 1.
Zietara, A. M. (2017). Creating Digital Elevation
Model ( DEM ) based on ground points extracted
from classified aerial images obtained from
Unmanned Aerial Vehicle ( UAV ). . Norwegian
University of Science and Technology Faculty of
Engineering. Department of Civil and Environmental
Engineering, (June), 1–98.
Published
2020-12-28
How to Cite
ABDULRAHMAN, F. H., KATTAN, R. A., & GILYANA, S. M. (2020). A COMPARISON BETWEEN UNMANNED AERIAL VEHICLE AND AERIAL SURVEY ACQUIRED IN SEPARATE DATES FOR THE PRODUCTION OF ORTHOPHOTOS. Journal of Duhok University, 23(2), 52-66. https://doi.org/10.26682/csjuod.2020.23.2.5