Cizmar noise

This operation adds noise to the diffraction pattern following the definition of Cizmar et al. (2008) [Cizmar2008]. It consists of the combination of Poisson noise, representing the noise from the electron interactions statistics; and Gaussian noise, attributed to the camera’s electronics:

where \(C_1\) is the original intensity of a pixel, \(C_2\) the final intensity, \(\sigma\) the standard deviation of Gaussian noise, P the amplitude of Poisson noise and Z a random number normally distributed.

../../../../../_images/noise1.png

Example of a simulated diffraction pattern when the Cizmar noise was added. The standard deviation for Gaussian noise is 25 and the amplitude of Poisson noise is 8.

Parameters

The user must defined the standard deviation of Gaussian noise (\(\sigma\)) and the amplitude of Poisson noise (P).