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Figure 6
Reconstruction results using a known dictionary of spectra from Poisson-noised data with SNR = 29.0 dB and scan step size = 40. (a)–(c) Standard two-step method; (d)–(f) SPA without regularization; (g)–(i) SPA with TV regularization. The recovered probes are shown in the right column for the two-step method, SPA and SPA with TV (from top to bottom).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 53| Part 4| August 2020| Pages 937-948
https://doi.org/10.1107/S1600576720006354
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