Start - Computer settings
Tutorial 1:
START - COMPUTER SETTINGS
Start - Image Import with Telemetry based Orientation
Tutorial 2:
START - IMAGE IMPORT WITH TELEMETRY AND GCP BASED ORIENTATION
Start - Image import witrh exif/gps based orientation
Tutorial 3:
START - IMAGE IMPORT WITH EXIF/GPS BASED ORIENTATION
Start - Image Import with GCP based orientation
Tutorial 4:
START - IMAGE IMPORT WITH GCP BASED ORIENTATION
3D model orientation with EXIF/GPS and Ground control points (GCP)
Tutorial 4.1:
ORIENTATION WITH EXIF/GPS AND GROUND CONTROL POINTS (GCP)
Volume calculation
Tutorial 5:
VOLUME CALCULATION
Digital orthophoto recalculation
Tutorial 6:
DIGITAL ORTHOPHOTO RECALCULATION
Volume calculation based on two surfaces
Tutorial 7:
VOLUME CALCULATION BASED ON TWO SURFACES
How to use Bounding Box
Tutorial 8:
HOW TO USE BOUNDING BOX
Point cloud editing tools
Tutorial 9:
POINT CLOUD EDITING TOOLS
Camera settings
Tutorial 10:
CAMERA SETTINGS
Waypoint flying DJI
Tutorial 11:
WAYPOINT FLYING DJI
Ground control targets setup
Tutorial 12:
GROUND CONTROL TARGETS SETUP
Profile tools
Tutorial 13:
PROFILE TOOLS
DOF merge
Tutorial 14:
DOF MERGE
Unknown camera parameters
Tutorial 15:
UNKNOWN CAMERA PARAMETERS
Contour lines
Tutorial 16:
CONTOUR LINES
Point Cloud Classification
Tutorial 17:
POINT CLOUD CLASSIFICATION
3D Measurements
Tutorial 18:
3D MEASUREMENTS
How to geotag images
Tutorial 19:
HOW TO GEOTAG IMAGES IN MISSION PLANNER

Tutorial 7:
VOLUME CALCULATION BASED ON TWO SURFACES

Welcome to 3Dsurvey tutorials.

This time we’re going to show you how to measure volume differences between two consecutive measurements.

We have a construction site point cloud with all the details from our first measurement. The second measurement was taken one month later.

Remove all obstructions - delete points that are not defining digital terrain model. Vegetation, cars, heavy machinery etc… This is the fastest way to select and delete points; simply repeat the process until you’re done with all of them. If you need to deselect any terrain points use Deselect function. It takes no more than a few minutes to sort out each point cloud this way.

To calculate the volume difference between the two we first need to calculate DSM for both point clouds. Go to DSM - Calculate new, set it to 0.2 meters, ALL, 2 cells and click Calculate to create two water-tight surfaces.

The only thing that’s left is to select your area - left mouse click to start, right to finish. First measurement is coloured red, second is coloured yellow. Have a closer look at what is selected and click Calculate volume. Volume difference between the two measurements is displayed in the result window.

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