US Government As Represented by the Secretary of the Army

Other

The United States of America As Represented by the Department of Health

Charlie W Trussell

Dallas N Barr

John E Nettleton

Bradley W Schilling

Brian W Thomas

A system and method for registering 3D data sets is disclosed based on manual fiducial selection. The technique is useful in imaging obscured targets with 3-D imaging laser radars. For such an exemplary method, which defines a three-dimensional linear shift vector for each data voxel, four fiducials are required to completely define the mapping for a 3D space. An exemplary registration algorithm as disclosed provides an approach to automatically make fine adjustments to the 3D data registration. The tedious technique of shifting data sets relative to each other, in many degrees of freedom, is eliminated. Instead, a fine adjust is applied to the digital mapping function, through fiducial perturbation.

Digital registration of 3D laser radar data based on manually selected fiducials

The End Pumped Slab Laser Cavity incorporates all optical components required for a short-pulse laser. These optical components are 'locked' into alignment forming an optical laser cavity for diode laser or flash lamp pumping. The optical laser cavity never needs optical alignment after it is fabricated. The cavity is configured for optimal absorbtion for diode laser end-pumping over broad temperature ranges.

End pumped slab laser cavity

A system and technique for a laser rangefinder which uses a low peak power aser, scanner, and beam scanning device with a linear detector where target range corresponds to individual detector elements to enhance signal-to-noise ratio and maximum target range.

Laser rangefinder

A device for responding to visible bright light and attenuating these bright lights over a spectral region wherein image intensifiers and the like are sensitive, including the near-infrared, to reduce glare and halation prior to entering the image intensifier and a method of manufacture of said device. The device is comprised of some electrochromic (EC) material sandwiched between two light transparent conductive means wherein one light transparent conductive means has a photoconductive coating in direct contact with the EC material. With a voltage source applying voltage across said two light transparent conductive means, this device remains transparent at low light levels, but when an incoming bright spot is focused on the device, the photoconductive coating conducts at the focal point and the EC material becomes dark at that point, thus absorbing the bright spot. When the bright spot is removed, the darkened area becomes transparent again.

Growing community of inventors

Woodbridge, VA, United States of America

Charlie W Trussell