Figure 1

Deblurring results of$\mathbf{256}\mathbf{\times }\mathbf{256}$sparse Word image convolved by a$\mathbf{15}\mathbf{\times }\mathbf{15}$disk kernel generated by the MATLAB command$\mathbf{fspecial}\mathbf{(}\mathbf{\text{‘}}\mathbf{disk}\mathbf{\text{’}}\mathbf{,}\mathbf{7}\mathbf{)}$. Upper left: original image; upper middle: blurred image. The other three are reconstructed images, respectively, by an $A^T$ Bregman iteration, a reweighted ${\ell }_1$ minimization algorithm, and a chaotic iteration.