B^3-Seg: Camera-Free, Training-Free 3DGS Segmentation via Analytic EIG and Beta-Bernoulli Bayesian Updates (CVPR 2026)
B^3-Seg is a segmentation method for 3D Gaussian Splatting scene representations that balances boundary quality and training efficiency. By combining coarse region-level alignment with progressive boundary refinement, it produces stable, high-quality masks even in complex scenes while keeping practical compute costs. This work was accepted to CVPR 2026.