Optical imaging illustrative results

An interesting problem in optical imaging is to estimate the polarization components (Stokes parameters) from polarimetric images.

Graduate student John Valenzuela (in Applied Physics) developed a regularized algorithm for estimating the Stokes parameters directly from noisy, blurry, polarimetric images.

Here is an example of the input data; a set of 4 images recorded by a CCD camera with different polarization filters. The images look nearly identical but convey subtle polarization information that can be useful for security applications. The SNR of these images is 25dB.

The images below show (left to right) the true degree of linear polarization (DOLP) for this scene, the conventional DOLP image, and the DOLP image produced by John's regularized estimator.

For more details see his journal paper.

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