Alignment

In the interface of point cloud editing, click in the left-side toolbar to enter the alignment process.

Click to select two point cloud projects in the left-side model list, select the alignment mode as Feature (default), and choose to enable Auto alignment or not (enabled by default).

Note

• Only the point cloud data of two models can be selected to be aligned.
• After clicking to select models, you can clickin the top right corner of that model area to deselect; after alignment, you can click in the top right corner to clear the alignment result.
• Click the Exit button in the top right corner to exit the alignment function.

The introduction to alignment modes is as follows:

Alignment mode	Description	Note
Auto feature alignment	Choose the Feature alignment mode and enable Auto. Select two point cloud projects from the model list on the left side of the interface, to fill them into the respective model areas on the right side. Click Preview and the software will align two models automatically based on their common features.	Please ensure there at least exist three pairs of common feature points.
Manual feature alignment	Choose the Feature alignment mode and disable Auto. Select two point cloud projects from the model list on the left side of the interface, to fill them into the respective model areas on the right side, and add at least three pairs of common features individually through pressing Shift+left-button. Click Preview and the software will align two models based on the added feature points.	Please ensure there are at least three pairs of common feature points, or it will prompt that "The number of feature points is not sufficient". The manual chosen feature points can not be in a line, or it will prompt that "Feature points can not be in a line".

Note

• Manual alignment serves as an auxillary method of auto alignment. You can choose it when auto alignment fails.
• For the manual alignment mode, after adding feature points, you can click / in the bottom left corner of the model area, or clickin the top right corner to perform corresponding operations.
• For the manual alignment mode, the number of added feature points can not exceed 9, or it will prompt that "The number of feature points / markers has reached the maximum".

After alignment, click Apply to add the aligned project into the left-side model list, and the added aligned project will be automatically named as "Alignment result (X)".