Compressive sensing combined with digital holographic microscopy is well adapted to image in 3D and in time, small scattering objects moving within a larger motionless object. This situation corresponds to red blood cells (RBCs) circulating in the vascular system of a zebrafish larva (Danio rerio). RBCs positions are imaged in 3D from a single hologram, while the RBCs trajectories, i.e. the perfused blood vessels, are imaged from a sequence of holograms..
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