(A) A full field-of-view of the holographic image showing a mixture containing 10, 20, and 30 μm polystyrene beads. (B) The holographic image of the selected area in (A). (C) The coarse and (D) the full reconstruction images of the lensfree hologram shown in (B). (B), (C) and (D) show two different methods used to determine the locations of the objects. In (B), the locations of objects can be determined by matching the holograms with a library of lensfree images. In (C) and (D), the particle types are distinguished by their sizes, determined through their reconstructed lensfree images.