Systems and methods for generating information about a building from images of the building

A method of generating information about a building and building elements of interest, comprising:

• a) generating two-dimensional (“2D”) building and building element information from a plurality of overlapping 2D images of a building including at least one building element of interest;
• b) generating, by a computer, three-dimensional (“3D”) building and building element information wherein at least some of the 3D building and building element information is derived from a building information model (BIM);
• c) generating, by the computer, projective geometry information by combining at least some of the 2D and 3D building and building element information, thereby establishing a plurality of relationships between 3D data points derived from either or both of the 2D building and building element information and the 3D building and building element information, wherein the plurality of relationships are established by:
• (1) performing an image segmentation or abstraction step on 2D image information by partitioning and grouping image elements, thereby generating a plurality of segmented 2D image information, wherein at least some of the plurality of segmented 2D image information includes information about at least part of a selected object;
• (2)performing a clustering step on 3D information incorporating all or part of the selected object to partition and group 3D data points present in the 3D information that belong together, wherein the 3D data points are associated with all or part of the selected object, thereby generating a plurality of clustered 3D information, wherein at least some of the plurality of clustered 3D information includes information about at least part of the selected object;
• and
• (3) performing a plurality of cross-validation steps on each of the plurality of segmented 2D image information and the plurality of clustered 3D information by processing each of the plurality of segmented 2D image information and the plurality of clustered 3D information along with combined 2D image information and the 3D information, thereby providing:
• i) 3D data points associated with the building and the at least one building element of interest;
• and
• ii) a plurality of cross-validated 3D information associated with the building and the at least one building element of interest;
• and
• d) generating, by the computer, an information set associated with the building and the at least one building element of interest.