generate_shifts

deepinv.physics.phase_retrieval.generate_shifts(img_size, n_img=25, fov=None)

Generates the array of probe shifts across the image. Based on probe radius and field of view.

Parameters:

• img_size – Size of the image.

• n_img (int) – Number of shifts (must be a perfect square).

• fov (int) – Field of view for shift computation.

Return np.ndarray:

Array of (x, y) shifts.

Examples using generate_shifts:

Ptychography phase retrieval

Ptychography phase retrieval