Option to Bypass Image Undistortion for Metashape Data

[markdjwilliams]

I’m currently working with a workflow where I use Agisoft Metashape to compute image alignment and export COLMAP data for Gaussian splatting. The issue I’ve encountered is that the Metashape exporter (provided by Agisoft) outputs undistorted images by default, which seems consistent with the COLMAP format specification (“Here, the images folder contains the undistorted images, the sparse folder contains the sparse reconstruction with undistorted cameras….”)

While this is beneficial in many scenarios, it causes a problem when using these images as input to Nerfstudio. From what I understand, Nerfstudio automatically applies undistortion to input images and doesn’t currently offer a direct way to disable this step. This leads to redundant undistortion being applied, which is undesirable in my use case.

Would it be possible to add an option (e.g., --no-undistort) that allows users to bypass the automatic undistortion? I would prefer to not to zero out the lens intrinsics in the camera specifications, which I believe would be an alternate approach to skipping the undistortion step.

Thank you for your consideration. Please let me know if I have misunderstood Nerfstudio’s data expectations.