Computer Simulation of Four-Phase-Shift Digital Holography

We can simulate four-phase-shift digital holography using computer algorithms and extract its wrapped phase. Digital holography is a significant technique for recording and reconstructing three-dimensional images of objects. This technology enables us to obtain both the shape and surface profile of objects while capturing depth information. The implementation typically involves generating four interferograms with phase shifts of 0, π/2, π, and 3π/2 radians using mathematical modeling of wave propagation. The wrapped phase can be calculated using the standard phase-shifting algorithm formula: φ = arctan[(I₃ - I₁)/(I₀ - I₂)], where I₀, I₁, I₂, and I₃ represent the intensity distributions of the four phase-shifted holograms. Digital holography finds extensive applications in medical, industrial, and scientific fields due to its ability to provide high-precision 3D reconstruction images, helping researchers better understand and study internal structures and characteristics of objects.