Dual-coded compressive hyperspectral imaging

This Letter presents a new snapshot approach to hyperspectral imaging via dual-optical coding and compressive computational reconstruction. We demonstrate that two high-speed spatial light modulators, located conjugate to the image and spectral plane, respectively, can code the hyperspectral datacube into a single sensor image such that the high-resolution signal can be recovered in postprocessing. We show various applications by designing different optical modulation functions, including programmable spatially varying color filtering, multiplexed hyperspectral imaging, and high-resolution compressive hyperspectral imaging. © 2014 Optical Society of America OCIS codes: (120.6200) Spectrometers and spectroscopic instrumentation; (110.1758) Computational imaging; (110.4234) Multispectral and hyperspectral imaging