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Photogrammetry
Agisoft Metashape, or Metashape, is a photogrammetry software that can reconstruct a 3D mesh of an object using images taken of it. For more information about Agisoft or Metashape, please visit https://www.agisoft.com/.
For more in depth information about Metashape, please visit the manual https://www.agisoft.com/pdf/metashape-pro_1_7_en.pdf.
To begin the photogrammetry process, all the steps can be found on the toolbar in "Workflow." A quick tutorial of the reconstruction can be detailed as followed:
Select all the photos that are needed using the navigation. Tie points or Key points will be found, depending on user design choice. A sparse point cloud and estimated camera locations will be produced from this step.
Using estimated camera locations and sparse point cloud information, a dense point cloud is made. A .txt file can be exported at this step for further analysis in external software such as ParaView. To export, go to "Workflow" -> "Build Dense Cloud" -> "Export" and choose options.
This mesh is the important final result for photogrammetry. Similarly, to export a mesh, go to "Workflow" -> "Build Mesh" -> "Export" and choose options. Export formats supported by ROS are .obj and .stl.