Program Manager: Dr. Todd Hughes (IPTO)
The Geospatial Representation and Analysis (GEO*) Program focuses on mathematical methods that provide efficient representations of geometric objects that in turn enable high compression ratios while preserving end user precision and accuracy requirements. Currently, shortfalls exist in the ability to represent geometric objects. Examples this type of deficiency are the numerous geometric issues associated with the preparation of digital maps and models of terrain, including efficient representation of the geoid, digital elevation models, compression of digital elevation models, storage/retrieval and conflation of databases, methods for rapid registration of imagery to databases, as well as understanding the effects of errors in the map associated with the decision making process.
The representations produced as a result of the GEO* Program will support shape-based invariant processing that are contrast and illumination invariant, allowing automated registration of images to databases in the absence of camera models. During the first phase of the program, performers using these types of representations demonstrated a fully automatic image registration technique that accounted for perspective transforms with a registration accuracy better than 0.5 pixels operating at 1 Hz; a capability for three dimensional reconstruction from video; several compression schemes that digital elevation models to be compressed by a factor of 10 without loss of fidelity in applications; and a new representation for geodetic data such as the variation of the earth’s gravitational constant and the deflection from vertical that enabled compression ratios greater than 100. During the second phase of the program, the methods are expected to achieve real-time performance, higher accuracy, and transition to the Services. The effort will provide solutions to DoD problems in the area of target mensuration, visibility calculations, and path planning.
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