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nerfstudio-project / gsplat

CUDA accelerated rasterization of gaussian splatting
https://docs.gsplat.studio/
Apache License 2.0
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can you give a colmap dataset example #212

Open szat opened 3 months ago

szat commented 3 months ago

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 commented 3 months ago

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 commented 3 months ago

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 commented 3 months ago

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