Research Article

Poisson Noise Removal Scheme Based on Fourth-Order PDE by Alternating Minimization Algorithm

Figure 4

Relations between number of iterations (abscissa axis) and value of (vertical axis) by the three methods for “pepper”.
965281.fig.004a
(a) GD-(1.2)
965281.fig.004b
(b) GD-(1.4)
965281.fig.004c
(c) AM-(3.4)