Restoration of Defocused Pictures by Image-scanning Method
- 1 January 1977
- journal article
- research article
- Published by Taylor & Francis in Optica Acta: International Journal of Optics
- Vol. 24 (1) , 23-33
- https://doi.org/10.1080/713819389
Abstract
Defocused pictures are restored by the convolution operation with a special scanning aperture. The scanning aperture has a circular shape with an extent smaller than twice that of the defocused point-spread function, and is divided into ten concentric rings with equal separation. The restoration experiment is executed using a digital computer image-processing system, and some experimental results evaluating the effectiveness of the aperture are described.Keywords
This publication has 3 references indexed in Scilit:
- Restoration of Linear-motion Blurred Pictures by Image Scanning MethodOptica Acta: International Journal of Optics, 1975
- Image Processing by Multiple Aperture ScanningOptica Acta: International Journal of Optics, 1974
- The frequency response of a defocused optical systemProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1955