Grey levels in CCD images and the intensity of light sources needed for high-speed imaging

R. Germer

doi:10.1117/12.821795

10 February 2009 Grey levels in CCD images and the intensity of light sources needed for high-speed imaging

R. Germer

Proceedings Volume 7126, 28th International Congress on High-Speed Imaging and Photonics; 71260X (2009) https://doi.org/10.1117/12.821795
Event: 28th International Congress on High-Speed Imaging and Photonics, 2008, Canberra, Australia

Abstract

The noise of today's CCD-cameras can be so small that the photon's shot noise is dominant. The size of possible grey steps is calculated. It depends on the intensity of light. If the picture has 100 grey steps, then the high of the detectable grey step is about 100times as large in the bright part of the picture compared with the smallest steps in the dark part of the image. The results are applied to experiments. The picture quality is discussed in relation to resolution in space and time. A parallelepiped block for images is presented. If you want to have a delicately stepped grey scale, then you have to drop other information which is carried by the photons.

Citation Download Citation

R. Germer "Grey levels in CCD images and the intensity of light sources needed for high-speed imaging", Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 71260X (10 February 2009); https://doi.org/10.1117/12.821795

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