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

@article{Du2004EffectsOP,
  title={Effects of point-spread function on calibration and radiometric accuracy of CCD camera.},
  author={Hong Du and Kenneth J. Voss},
  journal={Applied optics},
  year={2004},
  volume={43 3},
  pages={
          665-70
        }
}
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… CONTINUE READING

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