Military Technology

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In fact, AR technology is more difficult than VR technology, but we often encounter it in life.

The so-called AR (reality, augmented reality) is a new technology that seamlessly integrates real-world information and virtual-world information.

It is the physical information that is difficult to experience in a certain time and space in the real world, such as visual information, sound, taste, touch, etc., and is superimposed after simulation through related technologies. The virtual information is applied to the real world. Perceived by human senses to achieve a sensory experience beyond reality.

In simple terms, it means that the real environment and virtual objects are superimposed on the same picture or space in real time.

This may be a bit more abstract, just give a few simple examples. For example, the accessories in the beauty camera that many people like to use, recognize the face of the person through the camera, and then put a cartoon blush on your face, or bring you a scarf, hat, glasses and the like. Real-time display in the camera screen, this is a simple AR technology.

Another example is often seen now. Pointing the camera at a building, or a specific pattern, and then flashing out a performance video in the picture, this is also an AR technology.

Or, in many airplanes and fighter cockpits, there will be a green or purple screen in the front. This screen is called HUD (Head-Up Display).

To put it simply, the CRT (picture tube) is composed of a virtual image at infinity through the lens, and the composite glass (transflective glass) turns the virtual image and the front real scene superimposed, so that the pilot can see the situation in front without delay See the flight and tactical character information displayed by the CRT below.

Therefore, this technology can also be regarded as an AR technology, including the helmet display (helmet assisted aiming system) in the helmet worn by the fighter pilot, but it is also an AR technology.

In terms of real consumer-grade AR glasses, the overall market is still developing slowly. In addition to the earliest G song glasses launched by G song, several companies have successively introduced several so-called AR glasses, but the gimmicks are far greater than practical significance.

Although many companies have announced that they have developed new VR glasses products, there is no one that can really be put on the market and used by the public.

Many are playing concepts, or playing capital digital games through this gimmick. So like VR, there has been a very serious industry bubble. It seems that with the word AR, you can fly, many things are labeled with this label.

Later, as the market and capital gradually calmed down, the industry gradually quieted down. Until recently, with the development of technology, it has slowly begun to make new improvements.

Although the technology in this field has made great progress in recent years, it is still difficult to solve the problems of AR technology and put it on the market for large-scale commercial use.

First of all, the first problem shows technology, which is the top priority in the entire AR technology, and it can be said to be the basis of the entire technology.

If you want to achieve real wearable AR glasses, you must solve this display technology problem. Unlike VR's immersive isolation of external information, AR has this very close connection with the outside world.

In simple terms, that is, its screen must be transparent, so that people can see things outside, and at the same time can see the virtual picture information displayed on the screen.

In order to achieve this effect, there are three methods in total, and currently only two are commonly used.

First of all, it is similar to the way of mobile phone camera. The screen is the kind of ordinary screen we use. It is just connected to the camera, and the camera takes real-time pictures of the outside world, so that people can indirectly see things outside.

Then add some virtual picture information on the screen, which also achieves the effect of superimposing the real environment and the virtual picture.

The second is the ideal way that everyone imagines. That is to use transparent display screen technology, so that people can directly see the real environment outside, but also see the virtual picture in the transparent display screen. Thus superimposed together to achieve a virtual reality effect.

To put it simply, some virtual pictures can be displayed in a piece of transparent glass, and the two pictures are fused through the tracking system and mobile computing technology to achieve an augmented reality effect.

As for the third one, it is only in a state of theoretical assumption. In simple terms, through brain-computer technology, the virtual picture is directly applied to the human optic nerve or the eye through electrical signals, so that what you see naturally has an augmented reality effect.

However, this technology is only at the theoretical stage, and it is difficult to implement at present. And this technology has a very real and troublesome problem.

If this technology is implemented, then people may not be able to distinguish which ones are real ~ www.readwn.com ~ which are illusory things, thus causing a series of serious problems.

Although there is still a long way to go to implement this technology, experts and some people have already proposed to ban the development of this technology. So there are far more people arguing about this technology than people who develop it.

Without mentioning the third technique, let's talk about the first two. Each of these two methods has its own advantages and disadvantages, but it is difficult to achieve either.

The first method may seem simple, but it actually depends on super high picture processing performance. And the picture taken by the lens is always different from what our eyes see, so the wearer may feel uncomfortable or even dizzy.

In addition, this picture has a delay with the real environment. Although this delay can be minimized, it still cannot solve the problem that the real environment and the display picture cannot be optimally matched, especially in a high-speed mobile environment.

The biggest problem with the second method is that in the transparent display screen technology, the screen must first be sufficiently transparent, that is, it cannot affect the normal field of view of the person.

Secondly, in terms of virtual screen display, it is not only required that the picture quality of the screen is clear and delicate, and the resolution is high. Because it is a transparent display, it should be displayed normally in high-brightness and low-brightness environments.

The so-called high-brightness environment means that in a strong light environment, the wearer can clearly see the display screen on the transparent screen. This may sound easy, but it is actually very difficult. You need to know that some screens often cannot see the picture in a bright light environment.

The so-called low brightness means that the display content of the transparent screen can be seen even in the absence of light. Because it is transparent, there is no way to fill the light, which all depends on the self-emission of pixels in the transparent screen, a bit like the LCD display without a backlight.

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