Conflation Automated map compilation

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Abstract
Map compilation, or conflation, is now being accomplished by computer. Interactive routines manipulate the graphic images of two different digital maps of the same region in order to permit map similarities and differences to be recognized more easily. Rubber-sheeting one or both of the maps permits an operator or the computer to align the maps in stages through methods of successive approximation and to review each new alignment. The computer recognizes matches using mathematical relations of geometric position and graph network configuration to test for feature matches and, when the tests are satisfied, corresponding features can be flagged automatically as matches or highlighted for review by the operator. Techniques and methods developed for conflation systems have important applications in other areas of automated cartography and in image processing and computer graphics

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