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 12:
GROUND CONTROL TARGETS SETUP

Welcome back to 3Dsurvey tutorials.

We’ll talk about the correct way of setting your ground control targets before the flight. We need them for accurate 3D data in order for 3Dsurvey to automatically process model orientation.

When you buy 3Dsurvey software it comes with 10 ground targets made from durable plastic to cope with your everyday tasks.

It is very important to set the targets properly to achieve end results with land surveying accuracy. I always print a Google map and asign approximate spots of control targets before leaving the office. There are two rules:

First; try to place ground control targets as homogeneously as possible across the selected area. Here are examples of correct and incorrect placements.

Second; always make sure that your area is within the boundaries of ground control points. Here’s the example; we have the area coloured in blue, the correct placement of ground control points is on the left and the incorrect on the right.

The minimum number of ground control points is 3 but you should always use more to have them serve as redundant measurements. To finish, measure ground control targets with GPS or a total station and start your flight.

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