| 摘要 |
A tree surveying system comprises a computer and a laser scanner. There is laser scanning to generate 3D scan files (2) and the processor detects and extracts (3) circle fits. Stem files (4) generated from scanning with different origins are combined (5) to provide enhanced stem data. Tree stem curvature is automatically generated by tracking the stem centre points at a number of levels above ground as defined by a digital terrain model. The enhanced stem data is combined with aerial data (6) determined by aerial laser scanning, to provide forest-level stem data (7), which is processed to generate cross-cut data and instructions (10). |
