At low light levels the photonic nature of light introduces dominant bias terms into the intensity correlations that need compensation. We present an unbiased estimator, and the noise on it, for a general Nth-order correlation of an arbitrary (although time-independent) image intensity distribution. The diagrammatic rules presented here for various noise terms serve as a useful bookkeeping device.
© 1990 Optical Society of America
S. N. Karbelkar, "Algorithm for calculating Poisson noise on image intensity correlations," J. Opt. Soc. Am. A 7, 1332-1336 (1990)