Which versions of Dot3D allow for use of AprilTag targets?
AprilTags can be used for loop closure (automatic single scene accuracy improvement by looping over unique tags multiple times) in any version of Dot3D with scanning capabilities enabled (Dot3D Scan, Dot3D X, and Dot3D Pro).
However, to use AprilTags for scale bar targeting (measured target-to-target distance references), hard targeting (known target coordinate references), or multi-scene stitching (via hard targeting), a Dot3D Pro (or Dot3D X) license is required. Dot3D Scan does not support this advanced targeting functionality.
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Targeting: How to Reference Survey Control Coordinates in Dot3D 5.0 & Up
1. Obtain a minimum of 3 AprilTag target coordinates (i.e. from survey instrument, measurement, reference model, another point cloud, etc.) 2. Set up a .txt target control file in the following format: AprilTag #, x, y, z AprilTag #, x, y, z AprilTag ...
Using AprilTags for Loop Closure in Dot3D
Overview: AprilTags for Loop Closure provide a way for Dot3D to identify 3D points in the scene across different points in time. They do not require any additional measurement or manual input and will never decrease your optimized data quality, so ...
Troubleshooting: Some AprilTags Unavailable for Targeting and Registration
To register scans with AprilTags in Dot3D, you must ensure that there are at least three unique AprilTags selected for targeting. This will typically take place automatically as shown here, however you sometimes may need to readjust the active tags ...
Dot3D Tutorial: Registering Multiple DP Scans with AprilTags in Dot3D Pro
Please click below for a full video tutorial on this procedure: Dot3D Tutorial: Registering Multiple DP Scans with AprilTags in Dot3D Pro This DotProduct video tutorial walks us through the full procedure to register 2 DP scans to each other using ...
Tutorial: Multi-Scan Registration with AprilTags in Dot3D
This quick tutorial covers the full process of accurately linking multiple Dot3D scans to each other after capture (in Dot3D 5.0 & up). Step-by-step guide: Introduction & Setup (00:00) Step 1: Open Scan 1 (01:50) Step 2: Set Coordinate System for ...