19. One or more computer readable storage media storing logic executable by a processor, the logic 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; 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.
19. One or more computer readable storage media storing logic executable by a processor, the logic 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; 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. 20. The media of claim 19 , the logic configured to: 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.