Holographic image processing with phase error compensation

A system comprising:

• memory to store holographic image data and phase errors;
• instructions;
• and
• at least one processor circuit to be programmed based on the instructions to:
• obtain holographic captured images associated with multiple different focal lengths from a spatial light modulator (SLM), the SLM to display diffraction pattern images;
• apply vibration compensation to the captured images to generate pre-processed holographic image data, the vibration compensation based on alignment of image content of multiple captured images associated with a same focal length to image content of an anchor image;
• and
• generate a phase error map based on the pre-processed holographic image data and model images, the model images based on data to form the diffraction pattern images.

At least one non-transitory machine readable medium comprising a plurality of instructions to cause at least one processor circuit of a computing device to at least:

• cause projection of diffraction pattern images displayed at a spatial light modulator (SLM), the diffraction pattern images based on diffraction pattern data, the diffraction pattern images associated with at multiple focal lengths;
• generate model images associated with the multiple focal lengths based on the diffraction pattern data, a model image of the model images generated based on at least one phase error guess input into a propagation model that generates a model sensor optical field, the model sensor optical field convertible into the model image, the phase error guess obtained iteratively from a gradient descent operation;
• obtain holographic captured images of the projected diffraction pattern images, the captured images associated with the multiple focal lengths;
• and
• generate a phase error map based on the gradient descent operation, the gradient descent operation based on the model images and the captured images.