Fig. 2.

(a) A 2D synthetic diffusion tensor field. (b,c,d) Results of projecting ∇φ̂_p onto the local tensor eigenframe, with pixel intensities proportional to the projection result. Red: ∇φ̂_p · e₁. Green: ∇φ̂_p · e₂. Blue: ∇φ̂_p · e₃.