Share Email Print
cover

Proceedings Paper

Noise estimation of an MTF measurement
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The modulation transfer function (MTF) measurement is critical for understanding the performance of an EOIR system. Unfortunately, due to both spatially correlated and spatially un-correlated noise sources, the performance of the MTF measurement (specifically near the cutoff) can be severely degraded. When using a 2D imaging system, the intrinsic sampling of the 1D edge spread function (ESF) allows for redundant samples to be averaged suppressing the noise contributions. The increase in the signal-to-noise will depend on the angle of the edge with respect to the sampling along with the specified re-sampling rate. In this paper, we demonstrate how the information in the final ESF can be used to identify the contribution of noise. With an estimate of the noise, the noise-limited portion of MTF measurement can be identified. Also, we demonstrate how the noise-limited portion of the MTF measurement can be used in combination with a fitting routine to provide a smoothed measurement.

Paper Details

Date Published: 18 May 2012
PDF: 11 pages
Proc. SPIE 8355, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII, 835506 (18 May 2012); doi: 10.1117/12.917723
Show Author Affiliations
David P. Haefner, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Stephen D. Burks, U.S. Army Night Vision & Electronic Sensors Directorate (United States)


Published in SPIE Proceedings Vol. 8355:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII
Gerald C. Holst; Keith A. Krapels, Editor(s)

© SPIE. Terms of Use
Back to Top