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. 2018 May 4;7:17179. doi: 10.1038/lsa.2017.179

Figure 1.

Figure 1

Comparison of data acquisition schemes for scanning spectroscopic imaging. (a) Conventional frame-by-frame raster-scanning design for a laser-scanning spectroscopic imaging system. (b) Sparse sampling by random collection of measurements throughout the entire spectroscopic image stack. The random sampling scheme fulfills the theoretical requirement for accurate reconstruction of a sub-sampled low-rank matrix (i.e., spectroscopic image).