Using a rotating test pattern for MTF measurement of staring array sensors

Jonathan D. Fanning; Srikant K. Chari; Carl E. Halford

doi:10.1117/12.577626

5 August 2004 Using a rotating test pattern for MTF measurement of staring array sensors

Jonathan D. Fanning, Srikant K. Chari, Carl E. Halford

Proceedings Volume 5407, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XV; (2004) https://doi.org/10.1117/12.577626
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

This paper describes the use of a rotating test pattern or reticle to measure the Modulation Transfer Function (MTF) of a staring array sensor. The method finds the Edge Spread Function (ESF) from which the MTF can be calculated. The rotating reticle method of finding the ESF of a sensor has several advantages over the static tilted edge method. The need for precise edge alignment is removed. Motion blur is used to simultaneously average out the effect of undersampling and to oversample the edge. The improved oversampling allows reduction of the noise in the generated ESF while keeping a high resolution. A unique data readout technique reads edge data perpendicular to the edge. Perpendicular readout eliminates the need to know or estimate the slope of the tilted edge. This MTF measurement method is validated using simulation and actual data captured by a digital camera. The resulting ESF plots agree well with expected results.

Citation Download Citation

Jonathan D. Fanning, Srikant K. Chari, and Carl E. Halford "Using a rotating test pattern for MTF measurement of staring array sensors", Proc. SPIE 5407, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XV, (5 August 2004); https://doi.org/10.1117/12.577626

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