The present invention provides an airborne
LIDAR air strips
overlay region redundancy identification and
elimination method, belonging to the
remote sensing data processing technology field. The method comprises: determining the air strips to which each
laser point in the airborne
LIDAR point cloud belongs, and extracting an overlapping region; extracting the homonymous points in the overlapping region; calculating the conversion parameters according to the least square method, converting coordinates of the
laser points of the overlapping region, and realizing the overlapping of the homonymous features; calculating a
distance threshold value, and performing redundancy removal according to the
laser point distance; employing the information entropy to calculate the information content of the
LIDAR point cloud data in the overlapping region prior to the redundancy removal and after the redundancy removal, and performing quantitative evaluation of the redundancy removal result. The airborne LIDAR air strips
overlay region redundancy identification and
elimination method can effectively remove the redundant information of the overlapping region, reduce the
data processing pressure, improve the efficiency, can be directly applied to the redundancy
elimination of the ground and between the data of the vehicle-mounted LIDAR adjacent observation stations; adaptively obtaining the
distance threshold values, determining whether the laser point has redundancy or not, making the
selection rule of the data points, and realizing the rejecting of the redundancy laser point; and providing the information entropy measurement of evaluating the redundancy validity.