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Michele Conni
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I am writing a review on snapshot spectral imaging techniques, and, being mainly interested in visible applications, I looked into spectral analysis with light field cameras, which have been rather popular in the previous years (see wikipedia): the main reference for these systems, at least for this typology of applications, is Ren Ng's paper, whose optical design has been applied to multispectral analysis in various ways. However, reading around, I did start to look into integral field spectroscopy (IFS), and in particular in the lenslet array method, and, from what I can understand, the idea of the two designs is essentially the same: you place an array of microlenses on the focal plane of the main lens, which then permits you to gather extra information on the object (in the case of the first light field camera's applciation, it was computational focusing, but this can be easily converted to spectral with a grating or a filter, as shown in the reference I provided).
Am I right, or am I missing some major difference between the two structures? Because in Ng's paper various similar optical design are cited, but there is not aknowledgement of the whole IFS field (which is in a way reasonable, given the big difference in application of the two techniques, but it is false that the whole concept was never conceived before).
Am I right, or am I missing some major difference between the two structures? Because in Ng's paper various similar optical design are cited, but there is not aknowledgement of the whole IFS field (which is in a way reasonable, given the big difference in application of the two techniques, but it is false that the whole concept was never conceived before).