Snapshot hyperspectral light field imaging using image mapping spectrometry

In this Letter, we present a snapshot hyperspectral light field imaging system using a single camera. By integrating an unfocused light field camera with a snapshot hyperspectral imager, the image mapping spectrometer, we captured a five-dimensional (5D) ( x , y , u , v , λ ) ( x , y , spatial coordinates; u , v , emittance angles; λ , wavelength) datacube in a single camera exposure. The corresponding volumetric image ( x , y , z ) at each wavelength is then computed through a scale-depth space transform. We demonstrated the snapshot advantage of our system by imaging the spectral-volumetric scenes in real time.