Image recovery from single shot digital hologram

摘要

Techniques described herein are generally related to high resolution image recovery of objects from digital holograms. The various described techniques may be applied to methods, systems, devices or combinations thereof. Some described methods for recovering an image may include receiving reference beam data that corresponds to a reference interference pattern and receiving hologram data corresponding to an object. The method may also include applying a cost function to the hologram data and the reference beam data to determine the object image data associated with the object. The cost function may include a smoothness constraint applied to the object image data. The cost function can be iteratively reduced to obtain object image data corresponding to the object and the obtained object image data can be processed to recover the image of the object from single shot holograms with image resolution greater than conventional holographic imaging system.

主权项

1. A method to recover an image of an object, the method comprising:
receiving reference beam data that corresponds to a reference interference pattern; receiving hologram data that corresponds to the object; applying a cost function to the hologram data and the reference beam data to determine object image data associated with the object, wherein the cost function includes a smoothness constraint applied to the object image data; selecting object image data at an initial time; identifying an approximately minimal value of the cost function by iteratively:
evaluating a value of the cost function; andupdating the object image data until the approximately minimal value of the cost function is identified; and processing the object image data to recover the image of the object.