SAS-Net: Cross-Domain Image Registration as Inverse Rendering via Structure-Appearance Factorization

ArXi:2602.09050v3 Announce Type: replace-cross Cross-domain image registration requires aligning images acquired under heterogeneous imaging physics, where the classical brightness constancy assumption is fundamentally violated. We formulate this problem through an image formation model I = R(s, a) + epsilon, where each observation is generated by a rendering function R acting on domain-invariant scene structure s and domain-specific appearance statistics a.