Tradeoffs between aliasing and MTF
Abstract
In the design and use of sampling imagers, there is a tradeoff to be made between adversity of aliasing and the inevitable loss in image sharpness incurred in reducing aliasing. There is no firm theoretical basis for trading off desirable response to reduce spurious response. It is, therefore, necessary to employ an empirical approach, utilizing representative scenes reproduced with an imaging system for which true and spurious response is known. A 100 x 100 element CCD imager has been used as a vehicle to produce a wide range of imagery under controlled conditions of spatial frequency response. It was found that the effects of aliasing are not as severe as might be predicted from frequency domain analysis. An excellent compromise between aliasing and image sharpness is obtained when sensing elements are contiguous.
- Publication:
-
Electro-Optical Systems Design Conference - 1974 West International Laser Exposition
- Pub Date:
- 1974
- Bibcode:
- 1974eosd.conf....1C
- Keywords:
-
- Charge Coupled Devices;
- Electro-Optics;
- Imaging Techniques;
- Modulation Transfer Function;
- Optical Filters;
- Optical Measurement;
- Pattern Recognition;
- Tradeoffs;
- Instrumentation and Photography