Super-Resolution of Magnetic Resonance Images via Convex Optimization with Local and Global Prior Regularization and Spectrum Fitting

Figure 1

Flow of MR image acquisition and super-resolution. The specimen is measured anisotropically from different directions. The blue arrows denote the through-slice directions. MR images are obtained with a narrow bandwidth along the through-slice directions. In most MR images, the spatial resolution along the through-slice direction is more than three times lower than that in the other two directions. There are still unknown high-frequency components even when a number of measurements are available. These components are completed by super-resolution.