Classification assigns points into categories such as ground, vegetation, buildings, roads, wires, and noise. That sounds straightforward, but it is one of the areas where automated tools still make many mistakes on real survey data.
Why classification matters
The final deliverable depends on it. If the cloud is not classified well, surfaces remain noisy, contours degrade, and downstream drafting becomes slower and less reliable.
Expertise and Automation
There is no silver bullet automated solution, and manual cleaning is still usually required. Good classification is a mix of software capability and expert judgment.