Bounding Box is Massive and Cant be Scaled down Enough

[ceeparsons]

Hey there, thanks for creating this tool, it's been a really exciting one to start working with.

I've been trying to create a tight bounding box for a head but I'm having problems making it happen. After running the COLMAP but before generating the JSON file for data loading, I loaded up my COLMAP data in blender and the bounding box seemed reasonably well sized (as seen in the photo below).

The moment I try to change it's size though it becomes massive and no matter how much I scale it down it's still way too big for my model.

I've also noticed a few of my point clouds are very unaligned with my camera, I've included those below for reference. Please let me know if this is a glitch or if there may be a way to make this work!

Thanks :)

[mli0603]

Hi @ceeparsons

For the offset issue, I want to check with you if you enabled single camera COLMAP by using --ImageReader.single_camera=true. This is the only case that I can think of where you will have an offset.

I have not encountered the zoom-in error you mentioned. I think this may be a bug in the code. Can you try making the 50 value a larger one (such as 100) in this line and see if it fixes it? https://github.com/mli0603/BlenderNeuralangelo/blob/3d87fb75d6f4a73dcd9a6ba49386922fa048f100/neuralangelo_addon.py#L1009

[ceeparsons]

I never specifically enabled it, but upon checking my run_colmap.sh file I found that it was indeed already enabled.

colmap feature_extractor ![Screenshot 2023-09-22 090549](https://github.com/mli0603/BlenderNeuralangelo/assets/145613370/831c61d8-afde-4af7-82df-4d6ce9c95d37) --image_path=${1}/images_raw \ --ImageReader.camera_model=SIMPLE_RADIAL \ --ImageReader.single_camera=true \

After that, I tried making max=100, and still had the same problem, before making it max=150, which seemed to fix it! It looks like the smaller bounding box it was trying to start with had values above 50 in almost all directions.

After having these larger values I was able to properly scale the bounding box! Thanks :)