Abstract:

A segmentation method by multiscale weight aggregation is presented for segmentation of the tree crowns based on the digital surface model (DSM). The tree top from the DSM for the segmentation of the tree crown is firstly selected. Then the tree top is projected to the aerial image as the seed of the segmentation. Based on a global measure, an algebraic multigrid technique is used to construct the pixels to a multiscale segmented image by weight aggregation. Through the position of the seed and the image size, the segmented tree crown is obtained. The experimental results demonstrate that the algorithm can accurately segment the tree crown which is projected to different viewing angle aerial images

Key words: aerial image, tree crown segmentation, multiscale segmentation, digital surface model, position and orientation system