System and method for airport mapping database automatic change detection
First Claim
1. A method for automatically updating a graphical information system (GIS) type database using aerial imagery, the method comprising:
- processing a new image to identify at least one target region therewithin;
analyzing said target region to determine image invariant moments thereof;
using feature vector data to generate a template of a target feature from an old image;
analyzing said template to generate image invariant moments thereof; and
comparing said image invariant moments of said target region with said image invariant moments of said template to identify a feature change between said target region and said template.
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Abstract
A method for automatically updating a graphical information system (GIS) type database using aerial imagery. The method may involve processing a new image to identify at least one target region therewithin; analyzing the target region to determine image invariant moments thereof; using feature vector data to generate a template of a target feature from an old image; analyzing the template to generate image invariant moments thereof; and comparing the image invariant moments of the target region with the image invariant moments of the template to identify a feature change between the target region and the template.
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Citations
20 Claims
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1. A method for automatically updating a graphical information system (GIS) type database using aerial imagery, the method comprising:
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processing a new image to identify at least one target region therewithin; analyzing said target region to determine image invariant moments thereof; using feature vector data to generate a template of a target feature from an old image; analyzing said template to generate image invariant moments thereof; and comparing said image invariant moments of said target region with said image invariant moments of said template to identify a feature change between said target region and said template. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for automatically updating an airport mapping database (AMDB) using satellite imagery, the method comprising:
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processing a new satellite image to identify at least one target region therewithin; analyzing said target region to determine image invariant moments thereof; using feature vector data to generate a template of a target feature from an old image, said template generally corresponding to said target region; analyzing said template to generate image invariant moments thereof; comparing said image invariant moments of said target region with said image invariant moments of said template to identify a feature raster change between said target region and said template; and updating said AMBD with a feature vector change representative of said feature raster change. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A system for automatically updating a graphical information system (GIS) type database using remote sensing imagery, the system comprising:
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a database for storing vector data relating to a geographic region and features present within said geographic region; a pre-processing system for receiving a new image and identifying a target region therewithin; a processing system for obtaining feature vector data from said database and generating a template from an old image taken previous in time to said new image, said template representing a target feature being generally related in shape to said target region; an image invariant moment analyzing system for generating image invariant moments of said target region and said template; a comparison system that compares said image invariant moments of said target region with said image invariant moments of said template and identifies feature changes between said target region and said template. - View Dependent Claims (19, 20)
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Specification