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Image Rectification
Image rectification is a transformation process used to project multiple images onto a common image surface. It is used to correct a distorted image into a standard coordinate system. It is used in computer stereo vision to simplify the problem of finding matching points between images. And it is used in geographic information systems to merge images taken from multiple perspectives into a common map coordinate system. Stereo vision uses triangulation based on epipolar geometry to determine distance to an object. Between two cameras there is a problem of finding a corresponding point viewed by one camera in the image of the other camera. In most camera configurations, finding correspondences requires a search in two dimensions. However, if the two cameras are aligned to have a common image plane, the search is simplified to one dimension - a line that is parallel to the line between the cameras. Image rectification is an equivalent alternative to this precise camera alignment. It transforms the images to make the epipolar lines align ... more
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System Design Strategies
System Design Strategies is an exclusive resource for the successful design and deployment for geographic information systems technology. This documentation is provided to share system architecture design methodology and the fundamental principles that contribute to system performance and scalability.
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Test your knowledge of GIS
What is an emergent paradigm for multidisciplinary/interdisciplinary research that enables the exploration of previously insoluble, extraordinarily intricate problems in geographic context?
