We describe a new pushbroom hyperspectral imaging device that has no macromoving part. The main components of the proposed hyperspectral imager are adigital micromirror device (DMD), a CMOS image sensor with no filter as thespectral sensor, a CMOS color (RGB) image sensor as the auxiliary image sensor,and a diffraction grating. Using the image sensor pair, the device cansimultaneously capture hyperspectral data as well as RGB images of the scene.The RGB images captured by the auxiliary image sensor can facilitate geometricco-registration of the hyperspectral image slices captured by the spectralsensor. In addition, the information discernible from the RGB images can leadto capturing the spectral data of only the regions of interest within thescene. The proposed hyperspectral imaging architecture is cost-effective, fast,and robust. It also enables a trade-off between resolution and speed. We havebuilt an initial prototype based on the proposed design. The prototype cancapture a hyperspectral image datacube with a spatial resolution of 192x192pixels and a spectral resolution of 500 bands in less than thirty seconds.
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