3-D Holographic Projections

3D holographic projection is the technology that records and reproduces objects in a real 3D image. Tremendous effects on all fields of life including business, education, science, art, and healthcare. Holographic projection is a kind of 3D technology without wearing glasses, and viewers can see the three-dimensional virtual character. This paper made a more detailed description of 3D holographic projection, and explored the principle and technology about holographic projection based on computer three-dimensional graphics. It will have some reference value for the future development. The intrinsic properties of holograms make 3D holographic imaging the best candidate for a 3D display. The holographic display is an autostereoscopic display which provides highly realistic images with unique perspective for an arbitrary number of viewers, motion parallax both vertically and horizontally, and focusing at different depths. The 3D content generation for this display is carried out by means of digital holography. Digital holography implements the classic holographic principle as a two-step process of wave front capture in the form of a 2D interference pattern and wave front reconstruction by applying numerically or optically a reference wave.