Retrieval of diffraction-limited images from below the threshold of recognition by superdirective data processing
- 1 January 1978
- journal article
- Published by Institution of Engineering and Technology (IET) in IEE Journal on Microwaves, Optics and Acoustics
- Vol. 2 (3) , 85-90
- https://doi.org/10.1049/ij-moa.1978.0017
Abstract
The resolution of long-wavelength imaging systems is normally limited by the effective recording-aperture dimension, and may preclude target recognition. It is shown that, for imaging systems in which complex field values are recorded, the aperture can be effectively extrapolated by a superdirective weighting function, thereby restoring essential features to a severely diffraction-limited image. Limitations to image enhancement arising from spatial noise in the object plane are discussed.Keywords
This publication has 2 references indexed in Scilit:
- Image Enhancement and RestorationPublished by Springer Nature ,1975
- Image processingProceedings of the IEEE, 1971