System and method for three dimensional change detection and measurement of a scene using change analysis
First Claim
1. A method comprising:
- receiving a first digital model of a first three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points;
receiving a second digital model of a second three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points;
performing a change analysis on the first and second digital models to provide a difference indication representing a difference between the first and second digital models, the change analysis including performing a digital model to database conflation comprisingidentifying objects in one digital model that are different from their counterpart objects in the other digital model to create a set of changed objects,deriving from the database additional attributes relating to each changed object, andcreating an object level change database comprising information identifying each changed object and the additional attributes relating to each changed object; and
providing a visual representation of differences between the first and second digital models with the visual representation comprising an image showing positive and negative object level changes in different colors.
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Abstract
A method (100) comprises steps of: receiving a first digital model (102) of a first three-dimensional scene comprising at least one object; receiving a second digital model (112) of a second three-dimensional scene comprising at least one object; and performing a change analysis (102) on the first and second digital models to provide a difference indication representing a difference between the first and second models. In one embodiment a mean square error operation (110) is performed on the first and second digital models to provide a value indicating the difference between the digital models. In another embodiment, a conflation operation is performed on the difference model provided by the change analysis (120) and an object level change database (124) is produced.
24 Citations
24 Claims
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1. A method comprising:
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receiving a first digital model of a first three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; receiving a second digital model of a second three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; performing a change analysis on the first and second digital models to provide a difference indication representing a difference between the first and second digital models, the change analysis including performing a digital model to database conflation comprising identifying objects in one digital model that are different from their counterpart objects in the other digital model to create a set of changed objects, deriving from the database additional attributes relating to each changed object, and creating an object level change database comprising information identifying each changed object and the additional attributes relating to each changed object; and providing a visual representation of differences between the first and second digital models with the visual representation comprising an image showing positive and negative object level changes in different colors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An information processing system comprising:
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an input for receiving a first digital model of a first three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; an input for receiving a second digital model of a second three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; and a processor configured for performing a change analysis on the first and second digital models to provide a difference indication representing a difference between the first and second digital models, the change analysis comprising performing a digital model to database conflation comprising identifying objects in one digital model that are different from their counterpart objects in the other digital model to create a set of changed objects, deriving from the database additional attributes relating to each changed object; and creating an object level change database comprising information identifying each changed object and the additional attributes relating to each changed object, and said processor also configured for providing a visual representation of differences between the first and second digital models and the visual representation comprises an image showing positive and negative object level changes different colors. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method comprising:
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receiving a first digital model of a first three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; receiving a second digital model of a second three-dimensional scene comprising a plurality of points and a plurality of objects, each object comprising a cluster of points; and performing a change analysis on the first and second digital models to provide a difference indication representing a difference between the first and second digital models, the change analysis including performing a digital model to database conflation comprising identifying objects in one digital model that are different from their counterpart objects in the other digital model to create a set of changed objects; and deriving from the database additional attributes relating to each changed object, and creating an object level change database comprising information identifying each changed object and the additional attributes relating to each changed object; adding a mean square error value for each entry in the object level change database; and presenting a visual display of the objects in the second three-dimensional scene that are different from their counterparts in the first three-dimensional scene wherein the data attributes are represented by different colors.
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Specification