Reality Scan Drone Mapping Workflow

1. Settings

1.1 General Settings

• Set to desired coordinate system.

Import Settings

• Group calibration by EXIF - YES.

1.2 Alignment Settings

Advanced Settings

• Brown 4 by Tangential 2.

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2. Import & Alignment

2.1 Images

• Import all images.
• Align images.

2.2 GCPs

• From Workflow, click Ground Control.
• Set GCP Import Settings.

2.2.1 If GCPs Below Cameras

• Select all GCPs.
• 1Ds → Tools → Suggest Measurements.

2.2.2 If GCPs Above Cameras

1. Select GCP → Alignment → Add Control Point Tool.
2. Find marker for GCP and place GCP on it in 2Ds.
3. Repeat for all GCPs with no auto suggestions.
4. Deselect Add Ground Control.

2.2.3 Align Images with GCPs

1. Select image to align.
2. In 2D, move the GCP to the marker (do not release the left mouse button).
3. Press the down arrow to move to the next image.
4. Repeat for all images containing that GCP.
5. For any images not assigned, use Image2D → Tools → Clear Suggestions.

2.3 Disable Image Geolocations

• Select all images.
• Prior Pose
• Absolute Pose: Unknown.

2.3.1 Realignment

1. From Alignment, click Update.
2. Check GCP image accuracy.
3. Click Align Images.
4. Check GCP image accuracy again.

2.4 Check Alignment Report

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3. Model Construction

3.1 Adjust Reconstruction Region

1. Scene 3D → Tools → Set Reconstruction Region.
2. Adjust Reconstruction Region.
3. Deselect Set Reconstruction Region.

3.2 Create Model

• Mesh Model → Normal Detail.

3.3 Clean Model

1. Scene 3D → Tools → Lasso.
2. Select area to keep.
3. Click Invert.
4. Disable Lasso and click Advanced.
5. Hold CTRL to add to selection.
6. Select Marginal Triangles.
7. Click Filter Selection.
8. Rename models as required (Source & Clean).

3.4 Texture Model

Press Texture to texture the model.

3.5 Classify Model

1. From Scene 3D Tools, select AI Classify.
2. Select the most appropriate classification type.
3. Click Classify Model.

3.5.1 Filter Classification (if editing is required)

1. Use the Lasso Tool to select the area to reclassify.
2. Use CTRL to make multiple selections.
3. Select the new classification type in 1Ds.
4. Click Override.
5. Deselect the Lasso Tool and AI Classify Tool.

3.6 Create Cross Sections

1. Scene 3D Tools → Cross Section Tool.
2. Adjust direction and settings.
3. Click Create Cross Sections.

3.6.1 Filter out Artificial Structures from Cross Sections

1. Select the Artificial Object class in the model.
2. Scene 3D Tools → Filter Selection.
3. Close Holes.
4. Regenerate Cross Sections.
5. Rename the new cross sections model to Cross Sections.
6. Delete the previous cross sections model.

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4. Create Orthoprojection

• Select Clean Model.
• Scene 3D Tools → Ortho Projection.

4.1 Check Ortho Tool Settings

• Click Render.
• Viewing Orthos: Ortho 2D View → DTM, DSM, IMAGE & MOSAICING.

4.2 Create Contours

1. Ortho 2D Tools → Contours.
2. Settings:
   • Pixel Type: Altitude.
   • Input Layer: DTM preferred.
   • Other settings as required.
3. Click Compute.

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5. Export