How to determine individual changes in x,y,z coordinates between two point clouds
Posted: Fri Oct 28, 2016 7:57 pm
Hi Daniel,
I would like to kindly ask for your help.
I have two point clouds that were recorded within an hour of each other. I need to calculate the amount of displacement that occurred in the x, y, and z coordinate between the scans. My research question is whether or not the rates of displacement changed significantly at certain time periods between scan 1 to scan 2. How can I use cloud compare to calculate the amount of change in x, y, and z coordinate between point clouds? And is it possible to determine the rates of change in the coordinates? My LiDAR scans are of a glacier - the glacier is a moving target - the movement of the ice is horizontal (surface velocities) in the x,y coordinate, but also vertical ice motion in the z coordinate. I have used the cloud to cloud differencing tool. I can look at C2C differences and split them for x, y, and z coordinates. I am not sure if this is the best tool to use? The tool does not show me the rates of change in displacement. Also, I am not sure if the differencing tool gives an output that shows an overall change in the geometry of a moving object? Rather than showing changes that acted on individual coordinates?
I would be very grateful for any help you can offer.
Thank you so much Cloud Compare community. The software is awesome
I would like to kindly ask for your help.
I have two point clouds that were recorded within an hour of each other. I need to calculate the amount of displacement that occurred in the x, y, and z coordinate between the scans. My research question is whether or not the rates of displacement changed significantly at certain time periods between scan 1 to scan 2. How can I use cloud compare to calculate the amount of change in x, y, and z coordinate between point clouds? And is it possible to determine the rates of change in the coordinates? My LiDAR scans are of a glacier - the glacier is a moving target - the movement of the ice is horizontal (surface velocities) in the x,y coordinate, but also vertical ice motion in the z coordinate. I have used the cloud to cloud differencing tool. I can look at C2C differences and split them for x, y, and z coordinates. I am not sure if this is the best tool to use? The tool does not show me the rates of change in displacement. Also, I am not sure if the differencing tool gives an output that shows an overall change in the geometry of a moving object? Rather than showing changes that acted on individual coordinates?
I would be very grateful for any help you can offer.
Thank you so much Cloud Compare community. The software is awesome