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. 2015 Jan 5;6:5913. doi: 10.1038/ncomms6913

Figure 3. Regularized images of a USAF test target.

Figure 3

Original data containing an increasing number of photons in the accumulated image in the left-hand column and reconstructed images for increasing values of λ in columns bd. b shows the reconstructed images weighted towards maximizing the log likelihood, d shows the reconstructed images obtained when the optimization algorithm is overly weighted towards increasing the sparsity in the spatial frequency space and c shows the reconstructed images with λ adjusted to give subjectively the best images. Scale bar, 400 μm.