FIGURE 3.
Reconstructed DW images with different regularization parameters (λ1 in Equation 4) (A-D) and their 3× differences (E-H) with (C). When the regularization parameter is not large enough, the noise level is still high (A and B). When this regularization parameter is too large, the image looks blocky and some structures are lost as indicated by the green and yellow triangles in (D), respectively