Abstract: A device may store a data structure including information identifying a geometric relationship between first and second coordinate values of a first data type. The data structure may also include a first array of a first length that includes the first coordinate value located at a position identifiable by a reference value. The data structure may also include a second array of a second length that includes the second coordinate value located at a position identifiable by the reference value. The data structure may also include a third array of a third length that includes an attribute value of a second data type, located at a position identifiable by the reference value. The device may receive an indication that one of the lengths is to be modified, and may modify the data structure so that the first length, the second length, and the third length are equivalent.

Abstract: A system and method are disclosed for converting a region of a Fish-Eye or other wide-angle image into a rectilinear image. According to an illustrative embodiment of the present disclosure, a Fish-Eye to rectilinear image conversion block is defined for use in a block diagram of a diagrammatic programming environment. The Fish-Eye to rectilinear image conversion block may use any of a variety of models for Fish-Eye systems, and thus is “model-independent.” Further, intuitive zoom, pan, tilt, and attitude adjustment parameters may be used with the image conversion block, to allow control of the conversion by users lacking advanced understanding of optics.

Abstract: In one embodiment, a system, method and computer readable media are disclosed for trimming geographic data that defines polygons to boundaries of a quadrangle. The geographic data is converted to map coordinates in a novel azimuthal map projection. Each map projected point in the azimuthal map projection has an azimuthal angle that is proportional to longitude of the point, and has a radius from the center of the azimuthal map projection that is proportional to both the longitude and latitude of the point. Polygons are trimmed along a lower limit of the quadrangle and along an upper longitude limit of the quadrangle using the azimuthal map projection. The map coordinates in the azimuthal map projection are then converted back to geographic data.

Abstract: In one embodiment, a system, method and computer readable media are disclosed for trimming geographic data that defines polygons to boundaries of a quadrangle. The geographic data is converted to map coordinates in a novel azimuthal map projection. Each map projected point in the azimuthal map projection has an azimuthal angle that is proportional to longitude of the point, and has a radius from the center of the azimuthal map projection that is proportional to both the longitude and latitude of the point. Polygons are trimmed along a lower limit of the quadrangle and along an upper longitude limit of the quadrangle using the azimuthal map projection. The map coordinates in the azimuthal map projection are then converted back to geographic data.

Abstract: A system and method are disclosed for converting a region of a Fish-Eye or other wide-angle image into a rectilinear image. According to an illustrative embodiment of the present disclosure, a Fish-Eye to rectilinear image conversion block is defined for use in a block diagram of a diagrammatic programming environment. The Fish-Eye to rectilinear image conversion block may use any of a variety of models for Fish-Eye systems, and thus is “model-independent.” Further, intuitive zoom, pan, tilt, and attitude adjustment parameters may be used with the image conversion block, to allow control of the conversion by users lacking advanced understanding of optics.