OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 3 — Jan. 20, 2004
  • pp: 665–670

Effects of point-spread function on calibration and radiometric accuracy of CCD camera

Hong Du and Kenneth J. Voss  »View Author Affiliations


Applied Optics, Vol. 43, Issue 3, pp. 665-670 (2004)
http://dx.doi.org/10.1364/AO.43.000665


View Full Text Article

Enhanced HTML    Acrobat PDF (88 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The point-spread function (PSF) of a camera can seriously affect the accuracy of radiometric calibration and measurement. We found that the PSF can produce a 3.7% difference between the apparent measured radiance of two plaques of different sizes with the same illumination. This difference can be removed by deconvolution with the measured PSF. To determine the PSF, many images of a collimated beam from a He-Ne laser are averaged. Since our optical system is focused at infinity, it should focus this source to a single pixel. Although the measured PSF is very sharp, dropping 4 and 6 orders of magnitude and 8 and 100 pixels away from the point source, respectively, we show that the effect of the PSF as far as 100 pixels away cannot be ignored without introducing an appreciable error to the calibration. We believe that the PSF should be taken into account in all optical systems to obtain accurate radiometric measurements.

© 2004 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(100.3020) Image processing : Image reconstruction-restoration
(110.4100) Imaging systems : Modulation transfer function
(120.5630) Instrumentation, measurement, and metrology : Radiometry

History
Original Manuscript: July 10, 2003
Revised Manuscript: October 16, 2003
Published: January 20, 2004

Citation
Hong Du and Kenneth J. Voss, "Effects of point-spread function on calibration and radiometric accuracy of CCD camera," Appl. Opt. 43, 665-670 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-3-665


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. C. Huang, J. R. G. Townshend, S. Liang, S. N. V. Kalluri, R. S. DeFries, “Impact of sensor’s point spread function on land cover characterization: assessment and deconvolution,” Remote Sens. Environ. 80, 203–212 (2002). [CrossRef]
  2. J. R. G. Townshend, C. Huang, S. N. Kalluri, R. S. DeFries, S. Liang, K. Yang, “Beware of per-pixel characterization of land cover,” Int. J. Remote Sens. 21, 839–843 (2000). [CrossRef]
  3. J. R. G. Townshend, “The spatial resolving power of earth resources satellites,” Prog. Phys. Geog. 5, 32–55 (1981). [CrossRef]
  4. S. Qiu, G. Godden, X. Wang, B. Guenther, “Satellite-Earth remote sensor scatter effects on Earth scene radiometric accuracy,” Metrologia 37, 411–414 (2000). [CrossRef]
  5. R. A. Schowengerdt, Remote Sensing (Academic, San Diego, Calif., 1997).
  6. H. Li, M. S. Robinson, S. Murchie, “Preliminary remediation of scattered light in NEAR MSI images,” Icarus 155, 244–252 (2002). [CrossRef]
  7. S. Murchie, M. Robinson, S. E. Hawkins, A. Harch, P. Helfenstein, P. Thomas, K. Peacock, W. Owen, G. Heyler, P. Murphy, E. H. Darlington, A. Keeney, R. Gold, B. Clark, N. Izenberg, J. F. Bell, W. Merline, J. Veverka, “Inflight calibration of the NEAR Multispectral Imager,” Icarus 140, 66–91 (1999). [CrossRef]
  8. J. Lehr, J. B. Sibarita, J. M. Chassery, “Image restoration in x-ray microscopy: PSF determination and biological applications,” IEEE Trans. Image Process. 7, 258–263 (1998). [CrossRef]
  9. J. Zandhuis, D. Pycock, S. Quigley, P. Webb, “Sub-pixel nonparametric PSF estimation for image enhancement,” IEE Proceedings. Vision Image Signal Process. 144, 285–292 (1997). [CrossRef]
  10. N. H. Nakashima, A. W. S. Johnson, “Measuring the PSF from aperture images of arbitrary shape-an algorithm,” Ultramicroscopy 94, 135–148 (2003). [CrossRef]
  11. B. L. Markham, “The Landsat sensors’ spatial responses,” IEEE Trans. Geosci. Remote Sens. 23, 864–875 (1985). [CrossRef]
  12. A. P. Cracknell, “Synergy in remote sensing-what’s in a pixel,” Int. J. Remote Sens. 19, 2025–2047 (1998). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1 Fig. 2
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited