The present application belongs to the technical field of ground
laser radar forestry data processing, and discloses a broad-leaved forest single tree segmentation method and
system based on
branch information guidance, taking ground-based
laser radar broad-leaved forest
point cloud as a
processing object, using RANSAC cylindrical fitting to combine the growth characteristics of the
tree trunk to detect the
tree trunk; starting from the top of the
tree trunk in the low
vegetation area, the tree branches are extracted by segmenting and growing the branches and combining the thickness changes of the
branch segments; starting from the end of the
branch, the tree crown leaf
point cloud is segmented by layer-by-layer growth. The present application has stronger
trunk detection capability under the conditions of lush low
vegetation and complex
terrain; on the other hand, the present application can accurately segment the tree crown when the large and small crowns are intertwined and the multiple crowns are closely surrounded. The
algorithm is efficient, simple and easy to use, and has great practical significance for improving the semantic understanding ability of forest scenes, assisting
forest resource investigation,
vegetation ecological research, and
satellite remote sensing product calibration and
verification.