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 6:
DIGITAL ORTHOPHOTO RECALCULATION

Welcome to 3Dsurvey tutorials.

This time we’re going to show you how to recalculate a digital orthophoto map.

We already produced an orthophoto map in our previous video. The result is a map with a 2 cm resolution. All points of vegetation, buildings, cars and similar obstructions had already been deleted prior to an orthophoto map calculation to get a smooth surfaced terrain model. Zoom in a bit to see if all unnecessary objects are deleted.

In case you’re not satisfied with any of the results there is a DOF recalculation tool to correct the orthophoto map.

Do so by clicking Select button to select the area. Do so with a little bit of margin zone around it. Select it with a left mouse click, finish your selection with a right click. 3Dsurvey will automatically display the images containing those objects. Select the image with preferred view, click Confirm to close the pop up and click Recalculate DOF. What you get is a clean orthophoto map with all obstructions removed and objects lined up.

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