Automated focus determination

Author

Weideman, Dean

Author_Institution

Div. of Electron. Syst., Northrop Corp., Hawthorne, CA, USA

fYear

1993

fDate

24-28 May 1993

Firstpage

996

Abstract

This paper presents the results of an IRAD study to develop a method for automating determination of best focus of electro-optical (E-O) sensors. A goal of this study was to develop a method compatible with automated E-O testers such as the Consolidated Automated Support System (CASS) in production for the Navy. The automated E-O tester should possess, as a minimum, the following elements: 1) target sources-infrared for thermal imagers, and visual for television cameras, 2) a single-edge target, 3) video digitizer, and 4) processor for implementing algorithms. Algorithms must perform focus determination in the operational environment, with shipboard vibration and large sensor random and fixed pattern video noises

Keywords

automatic test equipment; automatic testing; electronic equipment testing; focusing; image processing; image processing equipment; image sensors; infrared detectors; military systems; optical transfer function; random noise; ships; television cameras; transforms; AC power; ATE; Consolidated Automated Support System; Haar transform; IRAD study; MRTD; MTF; Navy systems; S/N ratio; electro-optical sensors; focus metric testing; infrared detector; sampling resolution; shipboard vibration; single-edge target; television cameras; thermal imagers; video digitizer; video noise; Automatic testing; Displays; Electrooptic devices; Focusing; Laboratories; Production systems; Sensor systems; System testing; TV; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace and Electronics Conference, 1993. NAECON 1993., Proceedings of the IEEE 1993 National

Conference_Location

Dayton, OH

Print_ISBN

0-7803-1295-3

Type

conf

DOI

10.1109/NAECON.1993.290807

Filename

290807