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A physically parameterized deformation prior is replaced with one damped harmonic oscillator per rigid part, driven by the observed wind and integrated by differentiable RK4, supervised photometrically alone to test whether such a prior is physically grounded rather than merely well fit.
UBone3D is presented, a novel framework based on physics-rectified conditional flow matching (CFM) that performs point cloud completion directly from partial US observations and demonstrates significant improvements in reconstruction accuracy and anatomical fidelity over existing baselines.
