Stokes image reconstruction for two-color microgrid polarization imaging systems.

Area of Science:

• Optics and Photonics
• Image Processing
• Sensor Technology

Background:

• The Air Force Research Laboratory (AFRL) has advanced imaging capabilities with a novel microgrid polarization imaging system.
• This system enables simultaneous reconstruction of linear Stokes parameter images in two colors on a single focal plane array.

Purpose of the Study:

• To present an effective method for extracting Stokes images from the AFRL's new camera system.
• To demonstrate the enhancement of spatial resolution by leveraging correlations between color bands.

Main Methods:

• Development of a microgrid polarization imaging system.
• Implementation of a novel method for Stokes image extraction.
• Utilizing correlations between color bands for improved resolution.
• Comparison with bilinear interpolation using test data.

Main Results:

• Successful extraction of Stokes images from the polarization imaging system.
• Significant increase in overall spatial resolution by exploiting color band correlations.
• Demonstrated superiority of the proposed method over bilinear interpolation.
• Provided bounds on image resolution based on reconstruction bandwidth.

Conclusions:

• The presented method effectively extracts Stokes images for the new AFRL camera system.
• Exploiting color band correlations offers a significant advantage in improving spatial resolution.
• The new approach provides better performance than bilinear interpolation for polarization imaging.