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http://dx.doi.org/10.7780/kjrs.2011.27.5.573

MTF Assessment and Image Restoration Technique for Post-Launch Calibration of DubaiSat-1  

Hwang, Hyun-Deok (Ground Systems Division, Satrec Initiative)
Park, Won-Kyu (Ground Systems Division, Satrec Initiative)
Kwak, Sung-Hee (Ground Systems Division, Satrec Initiative)
Publication Information
Korean Journal of Remote Sensing / v.27, no.5, 2011 , pp. 573-586 More about this Journal
Abstract
The MTF(modulation transfer function) is one of parameters to evaluate the performance of imaging systems. Also, it can be used to restore information that is lost by a harsh space environment (radioactivity, extreme cold/heat condition and electromagnetic field etc.), atmospheric effects and falloff of system performance etc. This paper evaluated the MTF values of images taken by DubaiSat-1 satellite which was launched in 2009 by EIAST(Emirates Institute for Advanced Science and Technology) and Satrec Initiative. Generally, the MTF was assessed using various methods such as a point source method and a knife-edge method. This paper used the slanted-edge method. The slantededge method is the ISO 12233 standard for the MTF measurement of electronic still-picture cameras. The method is adapted to estimate the MTF values of line-scanning telescopes. After assessing the MTF, we performed the MTF compensation by generating a MTF convolution kernel based on the PSF(point spread function) with image denoising to enhance the image quality.
Keywords
Slanted-Edge Method; ESF; LSF; PSF; MTF; MTF Compensation; Image Denoising;
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  • Reference
1 Helder, D., T. Choi, and M. Rangaswamy, 2003. Inflight characterization of spatial quality using point spread functions, Proceedings of the International Workshop on Radiometric and Geometric Calibration, pp. 151-170.
2 Hwang, H., W. Choi, S. Kwak, M. Kim, and W. Park, 2008. MTF assessment of high resolution satellite images using ISO 12233 slanted-edge method, Proceedings of the SPIE, vol. 7190, pp.710905-1-710905-9.
3 Song, J., D. Lee, S. Lee, D. Seo, S. Park, H. Lim, and H. Paek, 2005. Modulation Transfer Function (MTF) Measurement For 1m High Resolution Satellite Images such as KOMPSAT-2 Using Edge Function, Proceeding of ISRS 2005, Jeju, Korea, unpaginated CD-ROM.
4 Leger, D., F. Viallefont, and P. Deliot, 2003. On-orbit MTF assessment of satellite cameras, Proceedings of the International Workshop on Radiometric and Geometric Calibration, pp. 67-76.
5 Oppenheim, A.V., R.W. Schafer, and J.R. Buck, 1999. Discrete-Time Signal Processing, Prentice Hall International, Inc., pp. 454-465.
6 Park, W., A.R. Adnan, M. Hong, H. Hwang, K. Oh, J. Shin, and S. Kwak, 2009. Initial calibration and validation result of DubaiSat-1 images, Proceedings of the 60th IAC, IAC-09.B4.4.7, pp. 1-5.
7 Selesnick, I.W. and C.S. Burrus, 1996. Generalized Digital Butterworth Filter Design, Proceedings of the IEEE Int. Conf. Acoust., Speech, Signal Processing(ICASP), Vol. 3, pp. 1367-1370.
8 Caceci, M.S. and W.P. Cacheris, 1984. Fitting curves to data, the simplex algorithm is the answer, Byte 9, pp. 340-361.
9 강치호, 최해진, 2003, 다목적 실용위성 1호 EOC 영상에 대한 MTF 보상, 한국GIS학회 2003년도 공동 춘계학술대회 논문집, pp. 22-25.
10 Choi, T., 2002. IKONOS satellite on orbit modulation transfer function measurement using edge and pluse method, MSc Thesis, South Dakota State University.
11 Gonzalez, R.C. and R.E. Woods, 2002. Digital Image Processing, 2nd Edition, Prentice-Hall, Inc, pp. 261-266.
12 imatest, http://www.imatest.com
13 Tzannes, A.P. and J.M. Mooney, 1995. Measurement of the modulation transfer function of infrared cameras, Optical Engineering, 34:1808-1817.   DOI   ScienceOn