Abstract: System and method for encoding standard-formatted images with information including, but not limited to, geospatial information. This information, possibly in mark-up language format, can be quickly accessed and used to modify the image to which it is appended, or it can be ignored because the image itself remains unchanged.

Abstract: System and method for storing a dataset of image tiles. Method includes determining a number of zoom levels, accessing a cluster file that includes a subset of the zoom levels, and accessing the image tiles. For each of the image tiles, a cluster name is computed. For each of the image tiles, if the cluster file has a name that matches the computed cluster name, an image tile pointer is stored in a fixed length index, and the image tile associated with the computed cluster name is stored. For each of the image tiles, if the cluster file name does not match the computed cluster name, another subset of the zoom levels is computed, a new cluster file is created, an image tile pointer is created and stored, and the image tile is stored associated with the computed cluster name in the new cluster file according to the image tile pointer.

Abstract: System and method for converting source image data to tile data including (a) selecting a source image set; (b) computing a scaling value for the source image set; (c) establishing tile set geographic bounds of a tile set that is created based on the scaling value; (d) converting the tile set geographic bounds to discrete tile bounds; (e) for each source image (i) determining source image geographic bounds; (ii) if there is an intersection between the source image geographic bounds and the tile set geographic bounds, (1) extracting image data from the source image at the intersection; (2) scaling the image data based on a pre-selected scale; (3) storing the scaled image data to a tile storage mechanism; and (f) repeating steps (a) through (e) for each of the source image sets.

Abstract: System and method for converting source image data to tile data by (a) selecting a source image set, (b) computing a scaling value for the source image set, (c) selecting a base scale for a tile set to be created based on the scaling value, (d) establishing the tile set geographic bounds of the tile set, (e) converting the tile set geographic bounds, (f) for each source image from each source image set (i) determining source image geographic bounds of the source image, (ii) if there is an intersection between the source image geographic bounds and the tile set geographic bounds, (1) loading the source image from a LRU cache, if possible, (2) if the source image is not in the LRU cache, loading the source image into the LRU cache, (3) extracting image data from the source image at the intersection, (4) scaling the image data based on the base scale, (5) storing the scaled image data to a tile storage mechanism, (g) clearing the LRU cache, and (h) repeating steps (a) through (g) for each source image set.

Abstract: System and method for storing a dataset of image tiles.

Abstract: System and method for determining the tile size for a particular virtualized map view.

Abstract: System and method for converting source image data to tile data.

Abstract: System and method for storing and retrieving tiled image data.

Abstract: A method and system for efficiently converting an image from a first map projection to a second map projection image. The method includes precomputing coordinates in the first map projection for a subset of the total number of pixels in an empty second map projection image and subsequently, finding the first map projection coordinates of each of the remaining pixels by linear interpolation using the precomputed first map projection coordinates of the nearest surrounding precomputed pixels. A color is assigned to the second map projection image pixel with bilinear interpolation using color values of surrounding first map projection pixels. If the first map projection has fiducials, only the area within the fiducials is considered. An embodiment converts a USGS DOQ in UTM format into Geodetic coordinates.