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Hyperspectral volumetric imaging of a 3D object. (a) Ground-truth en face image of the object. “U” and “C” were printed at two different depths. (b) Reconstructed 3D image and two numerically refocused images at the letters’ depths. (c) Spectrum averaged within the dashed boxed area in the low left panel of (c). (d) Sharpness versus depth at two letter locations.
