can you give a colmap dataset example

[szat]

Hi there, I was wondering if you could give a colmap dataset on which the examples/simple_training.py works, when I put my own colmap folder with the structure name/images, name/spares, it complains that name/images_4/ does not exist. Debugging now, but would be nice to have an example that just works.

[FantasticOven2]

Hi, the "images_4" refers to the directory that contains images downsampled 4 times and it is provided in the mipnerf-360 dataset. When using your own dataset, you can tune the image factor using--data_factor (e.g. --data_factor 1 is the original image size).

[szat]

Hi, thx for the quick answer. Followup question, should colmap be run on the downsampled images, or run colmap on the original images and then downsample the images.

[FantasticOven2]

I think it's prefered to run colmap on the original images and then downsample the images. You also need to change the camera intrinsics when downsampling. Here's a reference for processing your own data in the oringinal 3DGS repo