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

Figure 6

Illustration of the process to perform the ER + KSVD and HIO + KSVD by using different activations in the object constraints, as depicted in the blue block. The yellow block diagram is the core of our proposed method which combines KSVD with the classical PR algorithms to render finer features of the object for the next PR iteration. The parameters , , and are represented by the maximum number of PR iterations, iteration, and iteration cycle for executing KSVD, respectively.