Abstract
Interferometric methods to obtain the three-dimensional spatial information and the continuous spectral information of a usual polychromatic object simultaneously without using coherent illumination, dispersion elements, or image forming elements (such as lens) have been recently investigated. These methods use interferometric techniques and signal processing only. These methods are based on measurement of a five-dimensional spatial correlation function and synthetic aperture technique. This paper reviews a recent progress in these techniques. The review includes the principle of methods, procedure of signal processing, and experimental results to obtain a multispectral set of three-dimensional images for spatially incoherent, polychromatic object.
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