Augmented reality (AR) is also called mixed reality. It uses computer technology to apply virtual information to the real world. The real environment and virtual objects are superimposed on the same picture or space in real time and exist at the same time. Therefore it attracts public attention. If you have personally experienced augmented reality, you will feel its infinite charm. Augmented reality travels between virtual reality and reality. Although virtual reality has attracted public attention, the society we live in is after all a society that combines reality and virtuality. That is the perfect unity. Augmented reality will eventually prove its versatility. Augmented reality is in the information field, especially using technologies such as the international Internet and global satellite positioning. The combination of these technologies has unlimited development space. Augmented reality provides information that is different from what humans can perceive under normal circumstances. It not only displays real-world information, but also displays virtual information at the same time. The two types of information complement and superimpose each other. In visual augmented reality, users use a helmet-mounted display to multiplex the real world and computer graphics, and then they can see the real world surrounding it. There are already many practical applications abroad. In Germany, when engineering and technical personnel perform mechanical installation, maintenance, and adjustment, they can use helmet-mounted displays to fully display the internal structure of the machine, as well as its related information and data, that could not be displayed originally. And can follow the computer prompts to work and solve technical problems. Make our work very convenient, fast and accurate. We have abandoned the backward methods and phenomena that we used to have to carry a large amount of bulky information with us and check it while working. Once problems or emergencies arise, we will be at a loss. In the medical field, doctors can use AR to easily accurately locate surgical sites. In the military aspect, troops can use AR to identify directions and obtain important military data such as geographical data of their current location. In terms of aviation and navigation, drivers can easily, quickly and accurately obtain the geography, weather, climate and other relevant data of their location through the AR system to ensure the smooth completion of aviation and navigation work. In terms of tourism and exhibitions, while browsing and visiting, people will receive relevant information about the buildings passing by and view relevant data about the exhibits. In terms of education, magic books are a typical example. Magic books look no different from ordinary books. They also have pictures and text. When a reader wears a helmet-mounted display to read a book page, he or she can see three-dimensional objects, immerse himself in the three-dimensional virtual world depicted in the book, and swim with other readers in the form of a miniature virtual avatar. Magic books are very interesting, especially for most children. In the fields of entertainment, games, and education, the application prospects of augmented reality are broader. The augmented reality quake game allows players in different locations around the world to enter a real natural scene at the same time and engage in online battles in the form of virtual avatars. Augmented reality (AR, Augmented Reality) is a technology that uses virtual objects to "enhance" the display of real scenes. Compared with virtual reality, it has the advantages of a strong sense of reality and a small workload of modeling. It can be widely used in engineering design, modern display, medical care, military, education, entertainment, tourism and other fields. In a research report, the Battelle Research Institute in the United States listed the 10 most strategic technology trends in 2020. These trends will determine the characteristics of social development in the future period. Among them, augmented reality technology ranks 10th. Domestic research units on AR systems include Beijing Institute of Technology, National University of Defense Technology, Xi'an Petroleum Institute, University of Electronic Science and Technology of China, Huazhong University of Science and Technology, Shanghai University, etc. Foreign units researching AR systems include SIEMENS AG in Germany, Columbia University in the United States, and Vienna University in Australia. These units, such as the Japanese Nara Association, have achieved certain results in the camera correction algorithm of the AR system, the design of AR helmet displays, the application of hardware platforms, and visual tracking technology. There are as many as 108 international patents involving AR systems, concentrated from 1995 to the present. Among them, the newly published German patent DE10108064 describes an augmented reality system that uses video or audio information for comprehensive visual tracking. The system consists of the following parts: Target tracking system, to detect information and report its location; image recording unit, to record images and convert the format; annotation system, to synthesize location data and archive the data.
The augmented reality display technology involved in the US patent US2002191003 published in the same year uses a camera to locate the position of an object and reports it to a connected computer to present the image. This method can present weather, dangerous situations, etc., and the images obtained after computer image processing amaze the audience. Immersive, its main applications include navigation safety control assistance, pilot training, emergency training, etc. There are still very few domestic patents involving AR, and domestic research on AR systems is still in its infancy.