Study on the precision of block adjustment based on UAV imagery data

Abstract

In order to solve the precision of block adjustment is not high and heavy image processing workload based on UAV image. First, the image data acquired by UAV were processed using the conventional block adjustment method, and then the POS(Position and Orientation System)-supported block adjustment method was used based on the Original POS data. For the problem of accuracy is not high of the original POS data obtained by UAV, POS data correction model was established and POS data error correction parameter were acquired by layout a small amount of the control points in regional network, and a POS-supported block adjustment method was proposed based on the corrected POS data. Experimental results show that the precision of the conventional method is superior to the method of using original POS data directly, using corrected POS data method on the precision is close to the conventional method, at the same time, the efficiency of the block adjustment was improved.