Length Measurement (Depth Interpolation)
Function Description: Length measurement tools are available for panoramic data and allows the user to query the distance information between two points by clicking the mouse. The measurement result represents the Euclidean distance of the point in the three-dimensional space.
Steps
1.Click Length(image) 
button via Panorama Measurement mode.
2.Left click in the Panoramic display window (Panorama) to select the starting point of length measurement.
3.Click the left mouse button to select the next measurement point.
4.Repeat the previous step until all measurement points are selected, double-click the left mouse button to complete the measurement, and the interface pop-up box displays the measurement length information.
5.Click the right mouse button before completing the measurement to cancel the last measurement point.