Fig. 8From: Solving multiphysics-based inverse problems with learned surrogates and constraintsPermeability inversion from fully observed time-lapse CO2 saturations. a Inversion result with PDE solvers. b The same but via the approximate FNO surrogate. c Same as a but with NF constraint. d Same as b but with NF constraint. e The FNO approximation errors as a function of the number of iterations for the result plotted in b and dBack to article page