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(Top) A block diagram explaining our decoding method used to demultiplex the lensfree sunlight holograms into narrower spectral bands. (Bottom) Back-projection results are reported for lensfree holograms of a resolution test chart, before and after the spectral demultiplexing step. The inset images clearly show the improvement, (bottom, right inset) where a spatial resolution of ~2.3 μm is demonstrated.
