SUB-PIXEL RESOLUTION OF TARGETS IN IMAGERY FROM MOSAIC DETECTOR ARRAYS

Authors
  1. Boulter, J.F.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
We describe a technique for digitally processing a sequence of images obtained with a staring mosaic detector array to permit the resolution of features smaller than the spacing between individual detector elements. It is based on combining the sequence of images to obtain an effective higher spatial sampling rate and Nyquist cutoff frequency, and then deconvolving the finite size of the detector elements as well as other sources of blurring. Application of the technique to surveillance imagery obtained in fixed stare, target autotrack, and pushbroom scanning modes is addressed. We provide a theoretical description of the sub-pixel resolution technique, the results of a simulation study, and a demonstration using experimental data.
Date of publication
22 Apr 1992
Number of Pages
11 (p151-161)
Reprinted from
Proceedings of SPIE on Signal and Data Processing of Small Targets, vol 1698, 1992
DSTKIM No
93-02891
CANDIS No
128297
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: