Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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A Study on the Improvement of Orthophoto Accuracy According to the Flight Photographing Technique and GCP Location Distance in Orthophoto Generation Using UAV

무인항공기를 활용한 정사영상제작에서 지상기준점 위치간격과 비행촬영기법에 따른 정사영상정확도 향상에 관한 연구

  • Yun, Bu-Yeol (Dept. of Civil Engineering, Chang-Shin University) ;
  • Yoon, Won-Sub (Dept. of Civil Engineering, Chang-Shin University)
  • Received : 2018.10.15
  • Accepted : 2018.12.06
  • Published : 2018.12.31
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Abstract

It is conservative to say that lots of research is performed as measures to use UAV for application to the rapid spatial information and its application is faced with settlement stage to some extent. In addition, Korea Land and Geospatial Informatix Corporation autonomously produces work regulation which is applied to every kind of orders and National Geographic Information Institute (2018) has notified public surveying work instructions about unmanned aerial device for the rapid spatial information construction. The results acquired by UAV are comprised of contents about accuracy improvements for the orthophoto when reviewing pertinent regulations. The results acquired by UAV are comprised of contents about accuracy improvements for the orthophoto when reviewing pertinent regulations. As a result, it is known that error amount has been sharply increased from 400m separation distance, and this study proposes that cross flight is able to reduce irregular error occurrence as measures to acquire stable results.

Keywords

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Fig. 1 VRS-RTK Survey

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Fig. 2 Study area (source: www.naver.com)

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Fig. 3 Distribution of GCPs and CPs

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Fig. 4 Inspire 2

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Fig. 5 Orthoimages and DSM

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Fig. 7 Orthoimages and DSM

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Fig. 6 Orthoimages and DSM

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Fig. 8 Orthoimages and DSM

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Fig. 9 Field overview

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Fig. 10 General flight

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Fig. 11 Cross Flight

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Fig. 12 Accuracy of CP in Flight

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Fig. 13 Accuracy of CP in Flight

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Fig. 14 Accuracy of CP in Cross Flight

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Fig. 15 Accuracy of CP in Cross Flight

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Fig. 16 RMSE Analysis by type

Table 1. Flight parameters for UAV images

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Table 2. Analysis data (unit:m)

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Table 3. Accuracy of CP in Flight

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Table 4. Accuracy of CP in Flight

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Table 5. RMSE Analysis (General flight)

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Table 6. Accuracy of CP in Cross Flight

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Table 7. Accuracy of CP in Cross Flight

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Table 8. RMSE Analysis (Cross flight) (m)

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References

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