Estimating dimensions of geo-referenced ground-level imagery using orthogonal imagery
AssigneeHover Inc.
InventorsBo Hu, Sarthak Sahu
Life of this patent
Estimating the term…
Abstract
A system and method is provided for measurements of building facade elements by combining ground-level and orthogonal imagery. The measurements of the dimension of building facade elements are based on ground-level imagery that is scaled and geo-referenced using orthogonal imagery. The method continues by creating a tabular dataset of measurements for one or more architectural elements such as siding (e.g., aluminum, vinyl, wood, brick and/or paint), windows or doors. The tabular dataset can be part of an estimate report.
Claims21
-11. (canceled)
One or more non-transitory computer-readable media storing instructions that, when executed by a system comprising one or more processors, cause the one or more processors to perform operations comprising:
- collecting, using a smartphone, a plurality of ground-level images capturing all sides of a single building;
- determining a location for the plurality of ground-level images;
- generating an outline of a plurality of facades associated with all sides of the single building shown within the ground-level images to assist in generation of a three-dimensional building model of the single building;
- generating the three-dimensional building model based on the outlined plurality of facades associated with all sides of the single building, wherein the generating the three-dimensional building model includes at least correlation and rectification of the outlined plurality of facades and representing points of the single building projected in three-dimensional space;
- retrieving a geo-referenced top-view orthogonal image of the single building based on the determined location of at least one of the plurality of ground-level images;
- deriving a scale as between all points of the three-dimensional building model by geo-referencing all points of the three-dimensional building model using the geo-referenced top-view orthogonal image by correlating the geo-referenced top-view orthogonal image to include matching at least two points of the three-dimensional building model to corresponding roof pixels in the geo-referenced top-view orthogonal image and identifying those matches as being part of a same feature within the three-dimensional building model of the single building;
- measuring, on the scaled three-dimensional building model, between at least one starting georeferenced point and at least one ending geo-referenced point to determine dimensions of one or more architectural elements, the dimensions including at least width and height of the one or more architectural elements, located within at least a first facade of the geo-referenced three-dimensional building model;
- and
- labeling the architectural element within the scaled three-dimensional building model, the labeling representing the determined dimensions.
One or more non-transitory computer-readable media storing instructions that, when executed by a system comprising one or more processors, cause the one or more processors to perform operations comprising:
- collecting, using a smartphone, a plurality of ground-level images capturing all sides of a single building;
- determining a location for the plurality of ground-level images;
- generating an outline of a plurality of facade shown within the ground-level images of all sides of the single building to assist in generation of a three-dimensional building model of the single building;
- generating the three-dimensional building model based on the outlined plurality of facades, wherein the generating the three-dimensional building model includes at least correlation and rectification of the outlined plurality of facades and representing points of the single building projected in three-dimensional space;
- retrieving a geo-referenced top-view orthogonal image of the single building based on the determined location of at least one of the plurality of ground-level images;
- deriving a scale as between all points of the three-dimensional building model by geo-referencing all points within the three-dimensional building model by matching at least two points of the three-dimensional building model associated with at least one outlined facade to corresponding roof pixels in the geo-referenced top-view orthogonal image;
- measuring, on the scaled three-dimensional building model, between at least one starting georeferenced point and at least one ending geo-referenced point to determine dimensions of one or more architectural elements located within the plurality of facades;
- and
- labeling the one or more architectural element with the determined dimensions.
Dependencies are inferred from the claim text.