Problem description

The block is affected by a spherical effect after aerotriangulation, I have a problem when importing my XLS-block file.

The user acquired a nadir aerial dataset and followed a specific calibration step.

Aerotriangulation was submitted, distortion parameters were calculated and oriented Photogroup, but the result was not acceptable.

Steps to follow

This type of dataset results in spherical deformation due to the unprecision of distortion parameters.

To avoid this problem, it is recommended that:

• Capture a small set of data from any object with the same camera.
• Treat aerotriangulation on this dataset by keeping the default parameters.
• Export the optical properties of the aero-triangulated photogroup.
• Import these optical settings into your UAV-photogroup.
• Submit the aerotriangulation and make sure to set the distortion parameters to "Keep" instead of "Adjust".
• The process will take advantage of these more precise parameters and avoid the spherical effect.

See also

More information on the subject, you can also consult this Article.