Uncertainty considerations for determining variability in detector noise for staring imaging devices

James A. Dawson; Katherine Sherer

doi:10.1117/12.2630878

27 May 2022 Uncertainty considerations for determining variability in detector noise for staring imaging devices

James A. Dawson, Katherine Sherer

Proceedings Volume 12106, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIII; 121060P (2022) https://doi.org/10.1117/12.2630878
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

A key parameter associated with imaging device performance is read noise, which varies for each detector. Even when shot noise is dominant, the read component of noise may be useful as a means of determining which detectors are faulty so that replacement values can be used. Furthermore, the aggregate rate of faulty detectors is useful as a figure-of-merit for the imaging device. Finally, the RMS variability of noise is a commonly used metric of overall imaging device quality. Typically, when raw detector outputs are analyzed in the presence of a stable background, the component of noise that is attributable to individual detectors is stationary, additive and uncorrelated between consecutive frames. Given a finite sequence consisting of N frames, the RMS sampling error in the estimate of the RMS noise σ is σ/sqrt(2N), when N is sufficiently large; this forms the basis of determining the needed value of N. Another consideration is the level of shot noise, since the read noise and the shot noise combine in quadrature. A third factor is the fidelity to which the read noise must be determined. This paper investigates the values of N that are needed for determining the detector noise with sufficient accuracy under varying conditions. Examples using simulated sensor data will be included.

Conference Presentation

Citation Download Citation

James A. Dawson and Katherine Sherer "Uncertainty considerations for determining variability in detector noise for staring imaging devices", Proc. SPIE 12106, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXIII, 121060P (27 May 2022); https://doi.org/10.1117/12.2630878

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available