Fast generation of pure phase digital holograms

A system, comprising:

• at least one memory that stores computer-executable components;
• and
• at least one processor that executes or facilitates execution of the computer executable components, comprising:
• a holographic generator component that receives or generates a visual image that represents an object scene;
• and
• a hologram processor component that converts the visual image to a sparse image to facilitate generating a complex hologram of the object scene based at least in part on the sparse image, and converts the complex hologram to a phase hologram to facilitate generation of a holographic image that represents the object scene based at least in part on the phase hologram, wherein the complex hologram comprises a magnitude portion and a phase portion, and the phase hologram comprises the phase portion, wherein the sparse image has a visual characteristic that is less dense than the visual image, and wherein, to facilitate the visual image being converted to the sparse image, the hologram processor component downsamples an intensity distribution of object points of the visual image by a defined downsampling factor, based at least in part on a lattice component, to generate a sparse intensity distribution of the object points of the visual image.