1. A method of determining a set of parameter estimates for an incoherent motion model from diffusion-weighted magnetic resonance data of a portion of a biological body, the method comprising: (A) determining, based at least in part on the diffusion-weighted magnetic resonance data, a first set of parameter estimates for a plurality of voxels associated with one or more images to be generated, the first set of parameter estimates comprising, for each of the plurality of voxels, estimates for a slow diffusion parameter, a fast diffusion parameter, and a fractional diffusion parameter indicating a fraction of slow diffusion to fast diffusion in a respective voxel; (B) determining a second set of parameter estimates by stochastically perturbing the first set of parameter estimates; (C) determining a third set of parameter estimates based, at least in part, on fusing the first set of parameter estimates and the second set of parameter estimates using a binary cut graph technique; (D) determining whether at least one criterion associated with the third set of parameter estimates is satisfied; (E) performing acts (B)-(C) using the third set of parameter estimates as the first set of parameter estimates if the at least one criterion is not satisfied; and (F) generating the one or more images based, at least in part, on the third set of parameter estimates if the at least one criterion has been satisfied.