Scene power spectra: The moment as an image quality merit factor
Abstract
Coherent optical power spectra of random scene imagery can become a powerful image evaluation technique when properly analyzed. A normalized low order moment of power spectra is set forth as a good image quality merit factor, which also has the advantageous property of taking out the spectrum analyzer's aperture effect. In addition to the relevant theory, experimental results with this merit factor of power spectra are given that demonstrate a high degree of correlation with subjective quality rankings, as well as the accurate assessment of optimum focus.
- Publication:
-
Applied Optics
- Pub Date:
- November 1976
- DOI:
- 10.1364/AO.15.002846
- Bibcode:
- 1976ApOpt..15.2846N
- Keywords:
-
- Coherent Light;
- Holographic Spectroscopy;
- Imaging Techniques;
- Power Spectra;
- Spectrum Analysis;
- Figure Of Merit;
- Fourier Transformation;
- Pattern Recognition;
- Photointerpretation;
- Q Factors;
- Random Signals;
- Instrumentation and Photography;
- DATA PROCESSING;
- IMAGE EVALUATION;
- IMAGE QUALITY