Digital holography refers to the process of creating a three-dimensional image of an object by recording the light scattered from it onto a digital sensor. Some alternative words for digital holography include computer-generated holography, holographic imaging, digital holographic microscopy, and holographic interferometry. These methods all involve the use of digital technology to create holographic images, which can be used in fields such as biomedical imaging, material science, and non-destructive testing. The ability to capture and reconstruct three-dimensional images with high precision has revolutionized these areas, making digital holography an essential tool for researchers and professionals who require detailed and accurate imaging data.