Criteria are specified for deciding on whether or not elements of a digital image are resolved, and metrics are defined for the extent of the improvement, if any, in that resolution brought about by image processing. These criteria and definitions enabled a quantitative comparison of the resolution brought about by image processing. These criteria and definitions enabled a quantitative comparison of the resolution improvement in simulated images of a two-squares pattern that were processed by the linear two-mu algorithm and the nonlinear ML and MAP algorithms. Both nonlinear algorithms had identical performances, and yielded a maximum resolution improvement of x2.4 for up to 1000 iterations, compared to an improvement of x1.9 for the two-mu linear algorithm. The performance of these algorithms was also compared qualitatively for the more complex, measured, passive millimeter-wave (PMMW) images of a simple metal/radar absorbing material (RAM) pattern and an extremely complex PMMW image of a military vehicle.
Passive millimeter-wave image resolution improvement by linear and nonlinear algorithms
2001
22 Seiten, 13 Quellen
Aufsatz (Konferenz)
Englisch
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