Conventional hyperspectral imaging systems simultaneously capture two of the three dimensions (x, y, λ) of a hyperspectral cube, but require the third dimension to be captured over time.
Line-scan systems, where the second spatial dimension is collected through platform movement or scanning, require stabilized mounts or accurate pointing information to ‘reconstruct’ the image. In wavelength scanning systems, spectral smearing can occur if there is movement within the scene, invalidating spectral correlation/detection. In addition, much of the spectral information collected by such systems, as with spatially invariant systems, contains more detail than is required for detection and tracking.
Surface Optic Corporation’s (SOC) Full Motion Video – Spectral Imaging (FMV-SI) system simultaneously captures and processes all three dimensions of a spectral cube at 60Hz video rates through a novel, plenoptic based design using a single focal plane array.
In contrast to Bayer type multispectral designs, placing the filter tray in front of the objective lens allows the system to be ‘spectrally modified’ within the response range of the focal plane array by simply switching the filters or the filter tray itself. In this way, the instrument can be spectrally (or polarimetrically) tailored to an application.
When coupled to SOC’s MIDIS embedded processor; calibration, correction and band selection can be carried out in real-time significantly reducing data volume. The processor also contains 64 real-time correlation processors for detection and discrimination without the need for a PC or GPU and can output standard NTSC signals for real time monitoring.
FMV-SI models are available for the UV (300-500nm), VNIR (450-950nm), and SWIR (1000-1700nm) spectral ranges.
Surface Optics Corporation offers a single engineering and manufacturing source for the characterization, control, and exploitation of the optical properties of surfaces. For over 35 years, Surface Optics has provided hemispherical and bidirectional reflectance measurement services, custom instrument engineering services, analytical software, reflectometers, hyperspectral and multispectral imagers, and surface coating products for a broad range of industry applications.