Gradient-based interpolation method for division-of-focal-plane polarimeters

Area of Science:

• Optics and Photonics
• Nanotechnology and Imaging

Background:

• Division-of-focal-plane (DoFP) polarization imaging sensors capture optical field polarization.
• These sensors face challenges with registration error and reduced spatial resolution.

Purpose of the Study:

• To introduce a novel gradient-based interpolation method for DoFP polarimeters.
• To enhance the reconstruction of polarization results from DoFP sensor data.

Main Methods:

• Development of a new gradient-based interpolation algorithm.
• Comparative analysis against existing interpolation techniques.
• Performance evaluation using visual examples and Root Mean Square Error (RMSE).

Main Results:

• The proposed method yields superior visual quality compared to other interpolation techniques.
• Lower RMSE values were achieved, indicating improved accuracy.
• Effective performance across a wide range of scene brightness, from dim to bright conditions.

Conclusions:

• The gradient-based interpolation method effectively addresses DoFP sensor limitations.
• It offers improved visual fidelity and quantitative accuracy in polarization imaging.
• This advancement is valuable for applications requiring high-quality polarization data.