Fig. 2: The growth in interest and advances in DH over time depicted by the number of publications, based on the Web of Science using search terms “Digital holography” by year.

There was the invention of DH in 1967 by J. W. Goodman who proposed to use electronic recording of holograms followed by numerical processing to reconstruct the object digitally¹⁰. With the ever-increasing availability of computational resources, these significant technical solutions have increasingly converged. There was array-detector-based holographic imaging for applications until the 1990s