CPC G06T 19/20 (2013.01) [G06T 7/74 (2017.01); G06T 2207/10028 (2013.01); G06T 2210/04 (2013.01); G06T 2219/2016 (2013.01)] | 24 Claims |
1. A method for generating a scaling factor for a building structure in a 3-D scene, the method comprising:
obtaining a plurality of 2-D images of the 3-D scene, wherein the plurality of images comprises image features co-visible among at least two 2-D images;
deriving reference poses for an imager based on the image features;
obtaining world map data including real-world poses of the imager associated with the plurality of images, wherein the real-world poses are derived from an augmented reality framework and comprise geometric position information;
selecting at least two candidate poses from the real-world poses based on translation changes between the real-world poses proportional with translation changes of corresponding reference poses; and
calculating a scaling factor for the building structure based on the geometric position information of the at least two candidate poses.
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