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http://dx.doi.org/10.7848/ksgpc.2012.30.5.485

Verification of Spatial Resolution in DMC Imagery using Bar Target  

Lee, Tae Yun (동아대학교 토목공학부)
Lee, Jae One (동아대학교 토목공학부)
Yun, Bu Yeol (동아대학교 토목공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.30, no.5, 2012 , pp. 485-492 More about this Journal
Abstract
Today, a digital airborne imaging sensor plays an important role in construction of the numerous National Spatial Data Infrastructure. However, an appropriate quality assesment procedure for the acquired digital images should be preceded to make them useful data with high precision and reliability. A lot of studies therefore have been conducted in attempt to assess quality of digital images at home and abroad. In this regard, many test fields have been already established and operated to calibrate digital photogrammetric airborne imaging systems in Europe and America. These test fields contain not only GCPs(Ground Control Points) to test geometric performance of a digital camera but also various types of targets to evaluate its spatial and radiometric resolution. The purpose of this paper is to present a method to verify the spatial resolution of the Intergraph DMC digital camera and its results based on an experimental field testing. In field test, a simple bar target to be easily identified in image is used to check the spatial resolution. Images, theoretically designed to 12cm GSD(Ground Sample Distance), were used to calculate the actual resolution for all sub-images and virtual images in flight direction as well as in cross flight direction. The results showed that the actual image resolution was about 0.6cm worse than theoretically expected resolution. In addition, the greatest difference of 1.5cm between them was found in the image of block edge.
Keywords
Digital Imaging Sensor; DMC; Spatial resolution; Ground Sample Distance;
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1 이재원, 이동민, 윤부열, 박치영 (2011), 디지털 항측 카메라 공간해상력 검증에 관한 연구, 춘계학술발표회 논문집, 한국지형공간정보학회, pp. 117-118.
2 이태윤, 이재원, 이동락, 백기석 (2012), 항공디지털카메 라 해상력 검정용 시트의 국내적용방안에 관한 연구, 춘계학술발표회 논문집, 한국측량학회, pp. 239-240.
3 Doerstel, C., Zeitler, W., and Jacobsen, K. (2002), Geometric calibration of the DMC: method and result, ISPRS, ISPRS, Denver, IAPRS Vol. 34, Part I, Com. I, pp. 324-333.
4 Earl, F. G. (1998), USAF 1951 and microcopy resolution test charts and pixel profiles, efg's Computer Lab, Kansas, USA, http://www.efg2.com/Lab/ImageProcessing/TestTargets.
5 Heier H. (2001), Deploying DMC in today's Workflow, Photogrammetric Week 01', Wichmann Verlag, Heidelberg, pp. 35-45.
6 Honkavaara, E., Jaakkola, J., Markelin, L. and Becker, S. (2006), Evaluation of resolving power and MTF of DMC, ISPRS, ISPRS, IAPRS Vol. 36(A1), unpaginated CD-ROM, 6 pages.
7 Honkavaara, E. (2008), Calibrating Digital Photagrammetric Airborne Imageing Systems using a Test Field, Ph.D. Dissertation, Helsinki University of Technology, Espoo, Finland.
8 Leberl F., Grube M., Ponticelli M., Bernoegger S. and Perko R. (2003), The UltraCam large format aerial digital camera system, Proceedings of The American Society For Photogrammetry & Remote Sensing, Anchorage, Alaska, 5-9 May, 2003.
9 Madani R., Dorstel C., Heipke C. and Sciences, Jacobsen K. (2004), DMC practical experience and accuracy assessment, ISPRS, ISPRS, Istanbul, IAPRS Vol. 35, Part B2, Com. II, pp. 396-401.
10 Tang, L., Dorstel, C., Jacobsen, K., Heipke, C. and Hinz, A. (2000), Geometric accuracy potential of the digital modular camera, ISPRS, Vol XXXIII, Amsterdam.
11 Wolf, P. R. and Dewitt, B. A. (2000), Elements of Photogrammetry with Application in GIS 3th, McGraw-Hill, USA, pp. 70-74.
12 Neuman, A. (2003), Verfahren zur Auflosung- smessung digitaler Kameras, Diplomarbeit, Fachhochschule Koln, Deutschland.