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. Author manuscript; available in PMC: 2017 Feb 15.
Published in final edited form as: Neuroimage. 2015 Dec 9;127:158–172. doi: 10.1016/j.neuroimage.2015.11.061

Figure 4.

Figure 4

Qualitative results from the first experiment described in Sec. 5.2. The first panel shows the ground truth phantom at the boundary voxels. The second panel shows fibers fit after adding Rician noise at S NR = 21.5. The third and fourth panels show smoothing results using linear (Eq. 4) and bilateral (Eq. 9) kernel weights. The results show that both estimation techniques reduce noise-induced angular error; however, adaptive estimation can avoid the orientation blurring at the boundary voxels, due to the inclusion of the Km kernel weights.