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Add prune_scale3d argument to MCMCStrategy #567

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bchretien
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MCMC-based models often suffer from very large splats that reduce the overall quality, as partially discussed in #252 and nerfstudio-project/nerfstudio#3548. This PR adds the same logic as in the default strategy, that is pruning (or in this case relocating) splats that are too large. I used the same naming convention and default values as for the default strategy for consistency.

@bchretien
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If it makes things clearer, I can rename prune_scale3d to relocate_scale3d.

@N-Demir
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N-Demir commented Mar 6, 2025

Have you ran this and seen if it fixes the issues mentioned on those datasets?

@bchretien
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@N-Demir: I only ran it on my datasets (that I can't share) and it improves the situation. Some users on the Discord server tested it and it worked for them as well.

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