Snapshot spectral imaging based on digital cameras

摘要

Snapshot spectral imagers comprise an imaging lens, a dispersed image sensor and a restricted isometry property (RIP) diffuser inserted in the optical path between the source image and the image sensor. The imagers are used to obtain a plurality of spectral images of the source object in different spectral bands in a single shot. In some embodiments, the RIP diffuser is one dimensional. An optional disperser may be added in the optical path, to provide further dispersion at the image sensor. In some embodiments, all imager components except the RIP diffuser may be part of a digital camera, with the RIP diffuser added externally. In some embodiments, the RIP diffuser may be included internally in a digital camera.

主权项

1. An optical element for use in a spectral imaging system comprising: a patterned structure that modifies a point spread function (PSF) of the spectral imaging system at each wavelength in a spectral range such that a resulting linear transformation of a source object into a diffused and dispersed image at an image sensor satisfies a restricted isometry property (RIP) condition.