Holographic projection technology: It belongs to a kind of 3D technology, and originally refers to the technology of recording and reproducing real 3D images of objects by using the principle of interference. However, the holographic technology that we usually know is not holographic projection in the strict sense, but a holographic projection technology that uses pepper illusion and edge blanking to achieve 3D effect.

VR: It is a computer simulation system that can create and experience virtual worlds. It uses a computer to generate a simulation environment for users to immerse themselves in. Virtual reality technology is a phenomenon that people can feel by using real-life data, electronic signals generated by computer technology and various output devices.

AR: Augmented reality technology can not only effectively reflect the content of the real world, but also promote the display of virtual information content. These subtle contents complement each other and overlap each other. In visual augmented reality, users need to overlap the real world with cg animation on the basis of helmet-mounted display, and they can fully see the surrounding real world after overlapping.

Extended data:

Holographic imaging principle

Dennis gabor, the inventor of holography, solved the problem of how to shoot all the light passing through big windows, not just the light passing through small pinholes. When observing through this window, because each eye observes a different scene, the observer will have a three-dimensional sense.

In addition, if the observer can move his head out of the window, he can see different angles of the object (an object was photographed in the holographic experiment in the early1960s, and a magnifying glass was placed a few centimeters in front of the object, so the observer can see the image of the object and the object itself by swinging his head up and down).

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