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Figure 4
Measurement of the tungsten coil. (a) Direct image of the sample when illuminated by one realization of the speckle pattern. (b) Conventional ghost-imaging reconstruction using m = 5000 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 100 Landweber iterations. (f) Corresponding refined image using 250 Landweber iterations.

IUCrJ
Volume 5| Part 4| July 2018| Pages 428-438
ISSN: 2052-2525
https://doi.org/10.1107/S205225251800711X