Abstract: A sealant spreader device fills voids around a drilled hole with sealant in glued-in-rod (GIR) structures. A liquid sealant may be applied to the base of a drilled hole. A sealant spreader device is then inserted to the base of the drilled hole, through the sealant. The sealant spreader device is then withdrawn while rotating. The sealant spreader device includes winged sections having contours which force the sealant radially outward toward walls of the hole, into any voids around the circumference of the drilled hole, and leaves a thin layer of sealant around the circumference of the drilled hole.

Abstract: A system and method of generating point clouds from passive images. Image clusters are formed, wherein each image cluster includes two or more passive images selected from a set of passive images. Quality of the point cloud that could be generated from each image cluster is predicted for each image cluster based on a performance prediction score for each image cluster. A subset of image clusters is selected for further processing based on their performance prediction scores. A mission-specific quality score is determined for each point cloud generated and the point cloud with the highest quality score is selected for storage.

Abstract: A system and method of generating point clouds from passive images. Image clusters are formed, wherein each image cluster includes two or more passive images selected from a set of passive images. Quality of the point cloud that could be generated from each image cluster is predicted for each image cluster based on a performance prediction score for each image cluster. A subset of image clusters is selected for further processing based on their performance prediction scores. A mission-specific quality score is determined for each point cloud generated and the point cloud with the highest quality score is selected for storage.

Abstract: A map which may also be a calculating or teaching device includes a flat representation of a planet with one hemisphere on one side and the opposite hemisphere on the opposite side. The hemispheres are projected to the same scale with matching meridian lines, an arbitrary point of interest forms the center of one side and the antipode of the point of interest forms the center of the other side. Scales are provided by which great circle routes may be plotted and measured. The maps are preferably conformed to an azimuth equidistant projection. A variation is disclosed by which the change from night and day is delineated.

Abstract: A slide mechanism for accurate linear, nonlinear and rotational motion. A first slide located in slidable relation to a second slide wherein the slides are separated by a distance except for small bearing surface. A portion of each of the slides is made of a magnetic material such that the slides are attracted to each other thereby maintaining the first and second slides in slidable relation. Apparatus for adjusting the separation distance between the magnetic materials of said surfaces such as a bearing set screw is disposed in one of the slides thereby providing the adjustment of the distance between the magnetic surfaces of the first and second slides. The bearing of the bearing set screw rest upon the opposite slide and provides a smooth movement of the sliding of the slide mechanism. The slide mechanism provides smooth and accurate movement for several mechanical devices.

Abstract: Instructional devices include information, such as a map, instructions, or any other visually discernable type of information is formed on one surface and is physically and spatially related to information on a second surface, and in one embodiment, the first surface is a map of the world and a second surface is an antipodal map of the world reversed by 180.degree.. By making a mark on the first surface, a Mark-Thru is produced at the corresponding point on the second surface. This concept is shown as applied to anaglyphs on which the information is projected on surfaces and on examinations or tests in which examination questions of multiple-choice type are formed on a first surface and the Mark-Thru indicates the correctness of answer on the second surface.

Abstract: A device and method of controlling the amount of flare or veiling glare in an imaging system by the simple addition of light scattering element. The amount of flare or veiling glare that is produced in the optical path is variable to determines the degree of contrast loss and thus the final contrast of the image.

Abstract: An optical imaging system for producing and applying image masks consisting of an original object holder, a lens and prism associated with the object holder for producing multiple images, recording means for these images, means for maintaining these recorded images or masks in precise register with the original object and each other and means of illuminating the recorded images for projection back through the optical system onto the original object. This optical imaging apparatus directs light from a scene located in a plane of multiple image planes where images differing in contrast, density, color content, and so forth, are produced and where means are provided for recording the images. These images are processed either in situ or apart from the apparatus as positives or negatives. The processed images are then placed or remain in their original positions, illuminated and reimaged back to the original object space.