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. 2018 Jun 7;5(Pt 4):428–438. doi: 10.1107/S205225251800711X

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© Daniele Pelliccia et al. 2018

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

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Measurement of the stencil sample. (a) Direct image of the sample when illuminated by one realization of the speckle pattern. (b) Conventional ghost-imaging reconstruction using measurements. (c) Ghost-imaging reconstruction after QR decomposition of the measurement matrix, obtained using the same measurement as the previous case. (d) Median image of 150 ghost images obtained by QR decomposition of the randomly permuted measurement matrix. (e) Image obtained by iterative refinement of the image in (b) using 50 Landweber iterations. (f) Corresponding refined image using 150 Landweber iterations.

Inline graphic — Measurement of the stencil sample. (a) Direct image of the sample when illuminated by one realization of the speckle pattern. (b) Conventional ghost-imaging reconstruction using measurements. (c) Ghost-imaging reconstruction after QR decomposition of the measurement matrix, obtained using the same measurement as the previous case. (d) Median image of 150 ghost images obtained by QR decomposition of the randomly permuted measurement matrix. (e) Image obtained by iterative refinement of the image in (b) using 50 Landweber iterations. (f) Corresponding refined image using 150 Landweber iterations.