Systems and methods for generating three dimensional geometry
Systems and methods are described for creating three dimensional models of building objects by creating a point cloud from a plurality of input images, defining edges of the building object's surfaces represented by the point cloud, creating simplified geometries of the building object's surfaces and constructing a building model based on the simplified geometries. Input images may include ground, orthographic, or oblique images. The resultant model may be scaled according to correlation with select image types and textured.
1. One or more non-transitory computer readable medium storing instructions that, when executed, cause a processor to execute operations comprising:
receiving a plurality of ground-level images of a building object captured by a wireless capture device circumnavigating a building object;
creating a point cloud with data points from the received ground-level images;
selecting a plurality of vertices defining edges of at least one single planar surface within the point cloud;
outlining the at least one single planar surface based on the selected plurality of vertices;
creating a simplified facade geometry for the at least one single planar surface based on the outlined single planar surface;
correlating data points within the point cloud to the outlined single planar surface;
averaging a planar fit for the outlined single planar surface based on the correlated data points; and
adjusting a position of the simplified façade geometry based on the average planar fit.
2. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising:
receiving an orthogonal image for the entire building;
identifying a plurality of orthogonal vertices of the orthogonal image;
correlating at least two of the plurality of orthogonal vertices with the adjusted simplified façade geometry; and
constructing a building model representing all surfaces of the entire building using at least the correlated plurality of orthogonal vertices.
3. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising applying a texture to the at least one planar surface.
4. The one or more non-transitory computer readable medium of claim 3 , wherein the applying a texture comprises mapping at least one of the ground-level images to the at least one planar surface.
5. The one or more non-transitory computer readable medium of claim 3 , wherein the applying a texture comprises using one or more of: camera information or ground level image information.
6. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising applying a three dimensional (3D) proximity buffer to selected data points in the point cloud to determine the at least one planar surface and identifying data points in the point cloud that are in close proximity to a region around each of the selected data points.
7. The one or more non-transitory computer readable medium of claim 6 , wherein a closest actual data point to the region is used as the data point to determine the at least one planar surface.