关键词: 橡胶树, 激光测距, 点云数据, 轮廓曲线, 自动提取

Abstract: In order to acquire the contour curve representation of rubber tree trunks and address the significant industrial challenge stemming from inadequate operational precision and suboptimal shaping outcomes resulting from the challenges associated with accurately fitting tapping equipment to the trunk contour, a method to automatically extract rubber tree outline curve based on laser-ranging technology was proposed. The automatic data acquisition platform of rubber tree trunk contour point cloud is developed, which is composed of power module, control module, drive module, acquisition module, data transmission module, data recording module and processing module. The platform has the function of automatic collection, transmission, recording and processing of the outline curve point cloud data. The automatic extraction experiment of rubber tree outline curve was carried out, and the accuracy of rubber tree outline extraction was analyzed by comparing the outline curve area based on statistical variance analysis. The results showed that the position of contour feature points was basically consistent with the actual position with a high recognition when 30 groups of contour point cloud data were collected continuously, and the coefficient of variation of repeated extraction of contour curves was 0.001 3. The extraction accuracy of trunk contour curve is not affected by the change of trunk position and acquisition direction, which means that the technical scheme is very feasible.

Key words: rubber tree, laser-raging, point cloud data, outline curve, automatic extraction