Along with the intensity and the spectrum, the polarization of light carries abundant information. The Stokes formalism allows for complete description of any partial or total polarization state. While most of the available polarization imaging cameras perform only linear Stokes polarization imaging (only the linear polarization can be quantified), SALSA performs live measurement of the full Stokes vector for each pixel of the image at a video frame rate. Many polarization-related parameters can be visualized in real time such as the Stokes parameters (S0, S1, S2 , S3), the Degree Of Polarization (Linear or Circular), the Angle Of Polarization, the Ellipticity angle, etc. This example shows two pairs of glasses. Left ones are linearly polarized sunglasses; right ones are circularly polarized 3D-movies glasses

SALSA software allows the acquisition in real-time of the raw polarization images and the calculation of the Stokes vector images. Different polarization images (angle of polarization, polarized, Degree Of Linear Polarization, Normal to the observed surface, etc.) are then easily computed at video rate.