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Data modulation scheme for spatial-spectral mapping spectral imaging, where the numbers “1–9” on the cube represent the fields being integrated and the letter “A” illustrates the spatial scene being replicated. (a and b) SSI with slicer mirrors (a) and lenslet array (b) as integral field units. (c and d) Channel-divided (c) and aperture-divided (d) spatial replication SSI techniques.
