Adaptive optics (AO) has become an indispensable tool at ground-based solar telescopes.
AO enables the ground-based observer to overcome the adverse effects of atmospheric …

A novel method of common-path imaging interferometry, the White Light Spatial-Phase-Shift
(WLSPS) for object surface measurements, is discussed here. Compared to standard White …

Common-path imaging interferometers offer some advantages over other interferometers,
such as insensitivity to vibrations and the ability to be attached to any optical system to …

3-D imaging LADAR systems that are capable of rapid frame acquisition may suffer from a
loss of range resolution due to the duration of the pulse transmitted to the target. Because of …

An extension of the white light spatial-phase-shift (WLSPS) for object surface measurements
is described. Using WLSPS, surface measurements can be obtained from any real object …

Wavefront sensors (WFS) use intensity measurements to estimate the phase of an incident
optical field for applications such as high-quality surface measurements and atmospheric …

Projection-based image registration algorithms use the sum of the pixel values along a
given axis of an image to detect spatial changes in temporally separated images. These …

The measurement error of a cross correlation algorithm with a threshold centroiding method,
which is not only related to the background noise variance, the image spatial variance, the …

Adaptive optics (AO) systems on airborne platforms must be able to sense fields degraded
by strong turbulence often over long horizontal propagation paths. This paper presents …

Projection-based image registration algorithms use the sum of the pixel values along a
given axis of an image to detect spatial changes in temporally separated images. These …