PhotoModeler’s target detection and marking tools are used when highly accurate 3D XYZ points are needed at key locations. PhotoModeler automatically detects applied or projected targets and solves for an accurate set of 3D points representing each target center. Coded targets provide the additional ability to automatically reference targets between photos. The resulting points can be used for line, curve, and surface modeling, or measurement and export as needed.
Targets are an effective technique for creating points on curved surfaces that don’t have distinct feature points, and for highly accurate point determination. PhotoModeler’s unique coded targets provide complete automation for many projects.
Apply targets to the object or scene, then take photos at convergent angles, covering the targeted area with suitable overlap. Separate the camera positions horizontally and vertically if possible, while ensuring targets are not photographed at too shallow an angle, as shown below:
Here are some examples using this technique - with a brief description, a sample photo, the camera positions, and the 3D model for each:
|* requires Scanner's Motion Tool|
PhotoModeler tools used in these projects:
- Automated and Manual Target Point Marking – mark points at key targeted locations for high accuracy measurement and modeling.
- Add line, curve, surface and other entities to build up the model shape.
Study these tutorials and tips for help with creating a PhotoModeler target-based wireframe/surfaced measurement project:
Automated Coded Targets Tutorial
Setting Up a Coordinate System Tutorial
Loft Surfaces Tip Video
Automated Coordinate Systems Tip Video
Curve Through Points Tip Video
Coded Targets and Automation - More Details
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