10. An apparatus comprising: a memory configured to store a first sensor data set and a second sensor data set generated in response to sensing one or more structures, the sensor data sets describing a plurality of structural features of the structures; one or more processors coupled to the memory and configured to: generate a plurality of first delta vector sets for the first sensor data set and a plurality of second delta vector sets for the second sensor data set, each delta vector set comprising one or more delta vectors for a structural feature, a delta vector indicating one or more relative geometrical relationships between the structural feature and one or more other structural features of the each sensor data set; determine a plurality of association scores for a plurality of delta pairs, a delta pair comprising a first delta vector set and a second delta vector set; identify a plurality of same feature delta pairs according to the association scores, a same feature delta vector set comprising a delta pair corresponding to the same structural feature; and assign one or more first features of the first sensor data set to one or more second features of the second sensor data set according to the same feature delta pairs.
10. An apparatus comprising: a memory configured to store a first sensor data set and a second sensor data set generated in response to sensing one or more structures, the sensor data sets describing a plurality of structural features of the structures; one or more processors coupled to the memory and configured to: generate a plurality of first delta vector sets for the first sensor data set and a plurality of second delta vector sets for the second sensor data set, each delta vector set comprising one or more delta vectors for a structural feature, a delta vector indicating one or more relative geometrical relationships between the structural feature and one or more other structural features of the each sensor data set; determine a plurality of association scores for a plurality of delta pairs, a delta pair comprising a first delta vector set and a second delta vector set; identify a plurality of same feature delta pairs according to the association scores, a same feature delta vector set comprising a delta pair corresponding to the same structural feature; and assign one or more first features of the first sensor data set to one or more second features of the second sensor data set according to the same feature delta pairs. 13. The apparatus of claim 10 , the processors configured to determine the plurality of association scores by performing the following for one or more iterations: identifying a plurality of candidate pairs for an iteration according to the association scores, a candidate pair indicating a mapping of a first feature to a second feature for the iteration; and rotating the first delta vector sets with respect to the second delta vector sets.