Phase recovery method of metasurface large-view-field holography based on spatial light field

The invention belongs to the technical field of optical holography, and discloses a phase recovery method of metasurface large-view-field holography based on a spatial light field, which comprises the following steps: acquiring a target image, inputting the target image into a holographic display system to generate an initial holographic surface light field, and setting a correlation coefficient; performing iterative optimization on the phase distribution of the initial holographic surface light field through Fresnel transformation based on the correlation coefficient, and obtaining optimized holographic surface phase data when a loop output condition is met; based on the optimized holographic surface phase data, acquiring phase distribution data on a spatial light field by using a low-pass filtering algorithm; and loading the phase distribution data on the spatial light field to a hologram recording medium to complete phase recovery of the holographic display system. According to the technical scheme of the