A four-dimensional imaging system with the advantages of Fresnel incoherent digital holography and spectral imaging technology was proposed. It could obtain three-dimensional spatial information and spectral information of the object simultaneously. A tunable filter was introduced in Fresnel incoherent correlation holography system. With the incoherent light source,the hologram diagrams of the three-dimensional objects under different wavelengths were recorded,and the reconstruction images were obtained. Th...
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