In almost every practical scenario the light reflected from a surface is scattered in the atmosphere before it reaches a sensor. While this effect can be a little annoying for the amateur photograph trying to take a picture, it can have disastrous consequences for unmanned autonomous vehicle navigating through fog for instance.
By employing an innovative method based on a clever combination of spectral bands and polarization analysis, coupled with advanced image processing techniques, significant improvements have been achieved on fog obscurant using the existing passive full Stokes polarization imaging camera for visible light “SALSA” (developed by Bossa Nova Technologies).
For some applications, the need for fast polarization acquisition is essential (if the scene observed is moving or changing quickly). In this paper, we present a new acquisition method for Bossa Nova Technologies’ full Stokes passive polarization imaging camera, the SALSA. This polarization imaging camera is based on “Division of Time polarimetry” architecture. The use of this technique presents the advantage of preserving the full resolution of the image observed all the while reducing the speed acquisition time. The goal of this new acquisition method is to overcome the limitations associated with Division of Time acquisition technique as well as to obtain high-speed polarization imaging while maintaining the image resolution. The efficiency of this new method is demonstrated in this paper through different experiments.
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