Dot3D 5.0 Tutorial: Survey Control Targeting - Accurately reference your scans to known coordinates
Survey Control Targeting Tutorial (Dot3D 5.0+)
Welcome to the Dot3D (5.0+) survey control targeting tutorial. This video will walk you through the full process of referencing known target coordinates to your Dot3D scans before optimization for the most accurate and geo-referenced results in Dot3D. The entire video was recorded on an iPad Pro running Dot3D for iOS. Here are the steps in a table of contents:
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 ...
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 ...
(For a video tutorial, click the link here) When creating a scan with Dot3D, you may want to use known Survey Control points, to increase the accuracy of the scan, or to fit it into a coordinate system To begin, when creating your scan, you will want ...
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 ...