EBSD-Image

Cizmar noise

This operation adds noise to the diffraction pattern following the definition of Cizmar et al. (2008) [1]. 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.

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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).


  1. Cizmar, P., Vlad\'ar, A., Ming, B., & Postek, M. (2008). Simulated sem images for resolution measurement. Scanning, 30, 381-391.