Multi-Mission Payloads (MMP) False Degree of Linear Polarization using Imaging Polarimeters in Low Light Conditions
Abstract
Polarization improves target detection in images by improving the visibility of the target against its local background and reducing clutter detections. However, in both indoor and outdoor testing, we observed regions in camera (visible and near-infrared) images where the Degree of Linear Polarization (DoLP) is unexpectedly high. We call this false DoLP. Testing and modeling shows that DoLP increases as the intensity decreases. This can lead to false alarms, as the dark areas appear polarized. We will present images and data that illustrate the issue from indoor and outdoor testing. We will present a hypothesis to explain the data collected.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 2023
- Accession Number
- AD1192158
Entities
People
- Collin J. Bright
- Francis P Pantuso
- Jerome A Zadnik
- William W. Clark