Intensity-only optical compressive imaging using a multiply scattering material : a double phase retrieval system

Here is some advances on this initial concept of ours on Imaging with Nature. The subject was furthered here. Without further ado:

Intensity-only optical compressive imaging using a multiply scattering material : a double phase retrieval system by Boshra Rajaei, Eric W. Tramel, Sylvain Gigan, Florent Krzakala, Laurent Daudet

In this paper, the problem of compressive imaging is addressed using natural randomization by means of a multiply scattering medium. To utilize the medium in this way, its corresponding transmission matrix must be estimated. To calibrate the imager, we use a digital micromirror device (DMD) as a simple, cheap, and high-resolution binary intensity modulator. We propose a phase retrieval algorithm which is well adapted to intensity-only measurements on the camera, and to the input binary intensity patterns, both to estimate the complex transmission matrix as well as image reconstruction. We demonstrate promising experimental results for the proposed algorithm using the MNIST dataset of handwritten digits as example images.

Related:

• Imaging with Nature Project Page
• Reference-less measurement of the transmission matrix of a highly scattering material using a DMD and phase retrieval techniques - implementation -
• Imaging With Nature: Compressive Imaging Using a Multiply Scattering Medium

 

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