How to understand holographic projection, VR and AR technology?

Orthographic holographic display, also known as virtual imaging technology, is a technology that records and reproduces the real three-dimensional image of an object by using the principles of interference and diffraction. In this year's European Cup, the player on the left side of the host in Feast of the Giants used holographic projection technology, as well as the thank-you concert of Hatsune Miku 20 10, and the Hollywood movie Simone realized holographic projection by satellite, which made the virtual heroine give a grand concert.

Holographic projection is to make an image in advance and then play it out through certain technical means. Unlike watching videos, you can see three-dimensional images from all angles.

Second, VR.

VirtualReality is a computer simulation system that can create and experience virtual worlds. It uses computer to generate simulation environment, and is an interactive three-dimensional dynamic visual scene and entity behavior system with multi-source information fusion.

VR is to create a three-dimensional virtual world through computer simulation, providing users with visual, auditory, tactile and other sensory simulation. , so that users can observe things in three-dimensional space instantly and without restriction, just like personal experience. At present, VR technology, which has been used in auto shows in many places, can experience unusual virtual driving experiences in real time, such as real-time path planning, real-time feedback of road information, vehicle-vehicle interaction, vehicle-road interaction and so on.

In addition, Alibaba also set up a VR lab to study VR shopping. In the future, you can "push" the shopping cart to shop in Taobao, "try on" clothes, and "touch" the real fabric through related equipment!

The characteristic of VR is that everything you see in the device is virtual, but you can "look around" and interact under certain conditions.

Third, AR

AugmentedReality is a technology to calculate the position and angle of camera images in real time and add corresponding images, videos and 3D models. The goal of this technology is to embed the virtual world into the real world and interact with it. In other words, the image will be projected in real time according to your position, angle and so on.

In addition to the "8 minutes in Tokyo" mentioned at the beginning, AR also has the scene of Iron Man Ristak studying armor.

The fiery game PokemonGo also uses AR technology.

The characteristics of AR, you can see the virtual object in the real environment through the device, and this virtual object will change in real time according to your position and other information.

The advantage of holographic projection is that the audience can watch without special equipment, but they can't interact; The advantage of VR and AR lies in real-time interaction, which can be better displayed. The technical difficulty of AR is to identify objects, that is, it needs to scan and identify some objects or scenes in reality, so it is not as mature as VR technology. At present, there are many consumer-grade VR headsets, but what is lacking is excellent VR video. If you want to show the products to users more comprehensively, you may wish to make a wonderful introduction of VR products.