Annotation tools for reconstructing three-dimensional roof geometry

A system for generating a geometric model of a pitched roof of a building from multiview imagery, the system comprising one or more computing devices configured to:

• establish a three-dimensional coordinate space for the multiview imagery;
• display, through an annotation platform, first and second images of the multiview imagery depicting the pitched roof from different points of view;
• provide, through the annotation platform, functionality for a user to provide user input comprising instructions to:
• (i) annotate a ridge line of the pitched roof as depicted in the first image, and (ii) adjust a height of the ridge line in the three-dimensional coordinate space to match a height of the ridge line as depicted in the second image;
• and
• reconstruct, based on the user input received through the annotation platform, a geometric model representing the three-dimensional structure of the pitched roof comprising the ridge line situated at the height of the ridge line in the three-dimensional coordinate space.

A non-transitory machine-readable storage medium comprising instructions that when executed cause one or more processors to:

• establish a three-dimensional coordinate space for multiview imagery;
• display, through an annotation platform, first and second images of the multiview imagery depicting a pitched roof from different points of view;
• provide, through the annotation platform, functionality for a user to provide user input comprising instructions to:
• (i) annotate a ridge line of the pitched roof as depicted in the first image, and (ii) adjust a height of the ridge line in the three-dimensional coordinate space to match a height of the ridge line as depicted in the second image;
• and
• reconstruct, based on the user input received through the annotation platform, a geometric model representing the three-dimensional structure of the pitched roof comprising the ridge line situated at the height of the ridge line in the three-dimensional coordinate space.