Building template size estimation method based on unmanned aerial vehicle shooting

The invention discloses a building template size estimation method based on unmanned aerial vehicle shooting, and the method comprises the following steps: 1, obtaining a template image of a target building shot based on an unmanned aerial vehicle, carrying out the three-dimensional point cloud reconstruction of the template image, and obtaining three-dimensional point cloud data; 2, based on a target design drawing of the target building, segmenting the design point cloud data of the template to obtain template point cloud data obtained by dividing the template according to floor slabs, and recording the template point cloud data as first target point cloud data; and step 3, in the first target point cloud data, estimating the beam column component size of each floor area in the target building template based on the angular point features. According to the method, automatic data acquisition of the large-area template project and efficient segmentation of the large-area template point cloud data can be realiz