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Per-Pixel Time Constant Measurement of Bolometer Cameras

A novel system to measure the time constant of microbolometer cameras per-pixel to create a 2-D time constant map is presented. The measurements take place at the camera level and do not require any special control of the camera beyond the ability to capture raw data. Detailed simulations are run for a broad range of variables and values to demonstrate the usefulness of the system in extracting even extremely fast time constants with high accuracy and repeatability. Measurements are taken on a proof of concept system with an example camera, and a 2-D time constant map is reported. These results are compared with measurements from a linear motion stage system.