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Updated: Feb 13, 2026

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy FSM
Published on: August 5, 2009
Mutual Information between Reflected and Transmitted Speckle Images
N Fayard1, A Goetschy1, R Pierrat1
1ESPCI Paris, PSL Research University, CNRS, Institut Langevin, 1 rue Jussieu, F-75005 Paris, France.
Abstract:
We study theoretically the mutual information between reflected and transmitted speckle patterns produced by wave scattering from disordered media. The mutual information between the two speckle images recorded on an array of N detection points (pixels) takes the form of long-range intensity correlation loops that we evaluate explicitly as a function of the disorder strength and the Thouless number g. Our analysis, supported by extensive numerical simulations, reveals a competing effect of cross-sample and surface spatial correlations. An optimal distance between pixels is proven to exist that enhances the mutual information by a factor Ng compared to the single-pixel scenario.
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