Generalized matched filters
Abstract
Matched filters (MF's) are easy to make optically but fail to take into account either within-class variations or between-class similarities. We show a general method for taking those effects into account. Because our filter reduces to the MF in a simple-enough case, we call it a generalized matched filter (GMF). Because the statistics of the situation govern the GMF, no analytic formula exists and a computer numerical derivation is required. Because the GMF is computer generated, it can not be created by optical means. Instead, it requires a computer generated hologram. Because no adequate computer hologram existed, Aerodyne built such a 'holowriter'.
- Publication:
-
Final Technical Report Aerodyne Research
- Pub Date:
- January 1983
- Bibcode:
- 1983ari..rept.....C
- Keywords:
-
- Matched Filters;
- Optical Filters;
- Pattern Recognition;
- Computer Aided Design;
- Holography;
- Technology Assessment;
- Electronics and Electrical Engineering