Improved Error Reduction and Hybrid Input Output Algorithms for Phase Retrieval by including a Sparse Dictionary Learning-Based Inpainting Method

Figure 7

(a) The original object image is zero-padded to such that the oversampling condition is satisfied. The red rectangle divides the spatial domain into the inside and outside of the support region. (b) The oversampled diffraction pattern of (a) is used as the Fourier measurement. Here, the spectrum is displayed on a logarithmic scale for visualization purposes.

(a)

(b)