Snapshot hyperspectral light field tomography

We present snapshot hyperspectral light field tomography (Hyper-LIFT), a highly efficient method in recording a 5D ( x , y , spatial coordinates; θ , φ , angular coordinates; λ , wavelength) plenoptic function. Using a Dove prism array and a cylindrical lens array, we simultaneously acquire multi-angled 1D en face projections of the object like those in standard sparse-view computed tomography. We further disperse those projections and measure the spectra in parallel using a 2D image sensor. Within a single snapshot, the resultant system can capture a 5D data cube with 270×270×4×4×360 voxels. We demonstrated the performance of Hyper-LIFT in imaging spectral volumetric scenes.