Vr human body glasses

Lead: With the development of digital technology, numbers have been integrated into us. People can see three-dimensional scenery because our eyes can see things independently, and there is a gap between our left and right eyes, which causes some subtle differences in the perspective of our eyes, and such differences will make the scenery seen by our eyes slightly displaced. The difference between the images of the left eye and the right eye is called parallax, and the human brain skillfully fuses the images of the two eyes to produce a stereoscopic visual effect with a sense of space in the brain.

What are vr virtual glasses?

Because there is only one computer screen, but we have two eyes, the images seen by the left and right eyes must be separated independently in order to have stereoscopic vision. At this time, parallax can be continuously displayed on the screen through 3D stereoscopic glasses. The control IC sends stereoscopic signals to the screen (left eye-right eye-left eye-right eye-alternating in turn), and at the same time sends synchronization signals to 3D stereoscopic glasses, so that they can switch the left and right eye images synchronously. In other words, the left eye sees the scene that the left eye should see and the right eye sees the scene that the right eye should see. 3D stereoscopic glasses are a kind of penetrating liquid crystal lens. By controlling the opening and closing of the liquid crystal glasses through the circuit, the glasses lenses can be controlled to be completely black, thus covering the image at a glance. Off can control the transparency of glasses lens, so that the other eye can see the image that the other eye should see. 3D stereoscopic glasses can imitate the real situation, so that the left and right eye images can be displayed alternately on the screen continuously. By synchronously matching the physiological characteristics of 3D stereoscopic glasses and human vision, the real stereoscopic 3D images can be seen.

Display Mode of Realistic 3D Stereoglasses

There are many kinds of stereoscopic images using 3D/VR stereoscopic glasses in the market. The most common display modes are as follows: interlaced scanning, page turning, line blanking and synchronous doubling.

Interlaced virtual reality

Interlaced scanning is a cyclic display mode in which odd scan lines such as 1, 3, 5 and 7 are sequentially displayed, and then even scan lines such as 2, 4, 6 and 8 are sequentially displayed. This is somewhat similar to the old progressive display and the display mode of NTSC, PAL, SECOM and other TV systems.

The working principle of interlaced display mode is to divide a picture into two fields, that is, odd scanning line field or even scanning line field composed of odd lines or even scanning line field composed of single line and even lines. When using interlaced display mode for stereoscopic imaging, we can separate the left-eye image and the right-eye image into a single field and an even number of fields (or the reverse order), which is the so-called stereoscopic interlaced format. If shutter stereoscopic glasses are used in combination with interlaced mode, only the vertical synchronization signal of the picture field can be regarded as the shutter switching synchronization signal, that is, when a single picture field (that is, the left-eye picture) is displayed, the stereoscopic glasses will cover one eye of the user, and when an even picture field is displayed, the other eye will be switched to cover it, and so on, so that the purpose of stereoscopic imaging can be achieved.

As interlaced mode is not suitable for long-term and short-distance operation, in terms of computer display peripheral technology, interlaced mode needs the dual support of display hardware and drivers to run. With the development of related display peripheral technology, non-interlaced mode has completely replaced interlaced mode as standard equipment.

Turning pages in virtual reality.

Page turning is a special program to change the working principle of the graphics card, so that the three-dimensional 3D effect can be expressed with a new working principle. Because poor display chips have their own unique working principles, if you want to use picture exchange, you must develop a unique stereo driver for each display chip to drive 3D hardware circuits, so picture exchange is limited to some specific display chips.

Its working principle is that the left and right eye images are displayed on the screen interactively. Stereo glasses are used to cooperate with this stereoscopic display mode, and only the vertical synchronization signal is used as the shutter switching synchronization signal to achieve the purpose of stereoscopic imaging. While other stereoscopic imaging devices are used to distribute left-eye and right-eye images ("pictures" separated by vertical synchronization signals) to left-eye and right-eye display devices.

Picture exchange provides full-resolution picture quality, so its visual effect is the best among the four stereoscopic display modes. But the software and hardware requirements of picture exchange are also the highest, mainly for two reasons. First, if the staggered display of Vr virtual reality screen and 3D stereoscopic glasses is not well covered, then it is possible that only the left eye can see the part of the right eye, and the right eye can see the part of the left eye, resulting in a "triple" image (left eye, right eye and composite image), that is to say, the image will have an afterimage. Therefore, if you want to access the pictures of the left and right eyes at the same time, the minimum capacity of the FrameBuffer is twice that of the ordinary one. Second, because the screens are staggered, flicker will inevitably occur. In order to overcome the flicker problem of stereoscopic imaging, both eyes must provide at least 60 images per second, which means that the vertical scanning frequency must reach 120Hz or higher.

Synchronization and Doubling of Virtual Reality Images

The biggest difference between synchronous frequency doubling and the first two display modes is that it uses hardware circuits instead of software to generate stereoscopic signals, so it doesn't need any driver to drive 3D hardware circuits, so any 3D accelerated display chip can support it. It can be realized by arranging the left and right eye pictures up and down on the software system.

Its working principle is to insert an additional vertical synchronization signal between the left and right pictures (that is, between the upper and lower pictures) through an external circuit, so that the left and right eye pictures are displayed alternately on the screen. By using the vertical synchronization signal to switch the shutter synchronization, we can send the left and right pictures to the corresponding eyes almost at the same time, thus achieving the purpose of stereoscopic imaging. Because the picture synchronization frequency doubling will double the original vertical scanning frequency, it is necessary to pay attention to the upper limit of the scanning frequency of the display device. This mode is the most effective stereoscopic display mode and will not be limited by computer hardware specifications. At the same time, it can use MPEG format for further transmission and storage.

Line blanking in virtual reality

Line blanking, like picture synchronous frequency doubling, achieves the purpose of stereoscopic imaging by adding circuits, which is very suitable for computer standard non-interlaced display mode.

Its working principle is to store the captured pictures in the buffer, send the picture vertical synchronization signal after sending the pictures covering even scanning lines, and then send the pictures covering odd scanning lines, so as to repeatedly capture the pictures, send two single and double shielded pictures, and carry out stereoscopic imaging in a way similar to picture exchange. Its working mode will double the vertical scanning frequency of the signal sent by the graphics card, so pay attention to the upper limit of the scanning frequency of the display device when using this stereoscopic display mode.

Due to the adoption of stereoscopic interlaced format, line shading can fully support the past interlaced display application software and media, so this stereoscopic display mode has the best retrospective compatibility. However, like interlaced mode, the vertical resolution will be reduced by half, so the stereoscopic image quality will be slightly worse than that of picture exchange mode.

Some Vr virtual glasses products on the market

Virtual reality Eye3D wireless stereo glasses is an advanced player-level stereo glasses. After wearing Eye3D wireless stereo glasses, you can immediately enter a very realistic 3D scene and see people jumping around in front of your eyes. At the same time, the wireless stereo glasses allow players to integrate into the game easily and without any burden, and experience a fantastic journey.

Vr virtual reality E-D wireless stereoscopic glasses are the latest wireless 3D stereoscopic glasses produced by eDimensional Company. It can be used for 3D graphics in virtual reality technology, and can let you experience 3D games, movies, networks, photos and other picture environments in the virtual world very truly. E-D？ 3D glasses can transform the computer video games you watch into real 3D effects. It can calculate your height and distance more accurately.

Visual glasses of Vr Virtual Reality 3.0Rimax: We often see the image display glasses we carry with us in movies, as well as some movie glasses connected with large instruments. That's just a dream of people, but now we have developed a Rimax3.0 portable movie glasses. It allows you to watch movies at a closer distance and gives you a super cool feeling of 36-inch TV!

Vr virtual reality Eye-TrekFMD700: Mini LCD screen, unique optical system replicates the 36-inch screen effect. Unlimited compatibility, can be connected to DVD players, game machines or other AV products. The PLA line-by-line inverter system can access the video signal of the International Television Systems Committee, and is externally connected with an 8-hour super-capacity battery. Easy to carry and operate, and can be worn like traditional eyes. Power adapter: DC 9V output, rechargeable lithium battery: LP900 lithium battery, 7.2V/900mAH.

Vr virtual reality Eye-trekFMD-700 is a high-end product of Olympus imaging glasses, which is specially provided for professionals. This product can be connected to all image signals, and has an interface that can be directly connected to a PC or notebook computer. Eye-trekFMD-700 has amazing image resolution of megapixels and BBE surround sound. In addition, NTSC interface is suitable for all usage formats in the world.

Eye-Trek has created a brand-new entertainment world. Eye-Trek, which is only the size of a pair of sunglasses, can turn ordinary images or TV movies into amazingly large images-just like watching a 52-inch screen from a distance of two meters.

The role of VR glasses is to guide users to feel in a virtual environment.

VR glasses are VR head-mounted displays and virtual reality head-mounted display devices. Because there was no concept of head-up display in the early days, unprofessional names such as VR glasses, VR goggles and VR helmet were produced according to their appearance.

VR head display is to use head-mounted display equipment to close people's vision and hearing to the outside world and guide users to feel in a virtual environment. Its display principle is that the left and right eye screens display the images of the left and right eyes respectively, and the human eye will have a stereoscopic impression in its mind after obtaining these different information.

Extended data:

The principle of VR glasses is similar to human eyes. Two lenses are equivalent to eyes, but far less intelligent than human eyes. In addition, VR glasses generally divide the content into two screens, cut them in half, and achieve superimposed imaging through lenses.

At this time, the center of the pupil, the center of the lens and the center of the screen are often not in a straight line, which makes the visual effect very poor and leads to many problems such as unclear and deformation.

In an ideal state, the center of the pupil, the center of the lens and the center of the screen should be in a straight line. At this time, it is necessary to adjust the pupil distance of the lens to coincide with the pupil distance of the human eye, and then adjust the center of the picture with software to ensure 3 points 1 line.

So as to obtain the best visual effect. Some domestic devices are adjusted by physics or software, such as Storm Mirror, whose pupil distance needs to be adjusted by the knob above, and SVRGlass needs software to adjust the pupil distance.

Baidu encyclopedia -VR glasses

Do VR glasses hurt your eyes? Is it more harmful than mobile phones?

Long-term use of VR glasses is harmful to eyes. VR glasses cover all eyes and create a virtual world, which is presented to the brain through the eyes. After a long time, it is easy to cause fatigue or even damage to people's optic nerve, and it is easy to cause visual impairment.

Because there is a certain deviation between VR glasses and the pupil distance of human eyes, wearing them for a long time is easy to cause visual fatigue, dizziness, and even nausea and vomiting, thus causing a certain degree of visual damage. Especially for teenagers and children in the growth and development stage, it is easy to cause irreversible damage to the optic nerve. Therefore, when using VR glasses, we must pay attention to the control time, preferably not more than half an hour.

The difference between ar glasses and vr glasses

The difference between ar glasses and vr glasses

The difference between ar glasses and vr glasses, many users have searched what ar and vr are, but you can look at Baidu Encyclopedia, which is the official industry vocabulary. For some small white users, I simply can't understand the difference between AR glasses and VR glasses.

The difference between ar glasses and vr glasses 1

The biggest difference between VR and AR is that the scenes and elements seen through VR are fake and all made by computers. The scenes and characters seen by AR are partly true and partly false. AR brings real objects and virtual ones into the real world through the camera (key point), which is more real.

Take W2 smart glasses (AR) and virtual reality helmet (VR) as examples:

Difference 1: W2 smart glasses are designed in strict accordance with ergonomics, with traditional glasses design technology, multi-point stress, dual-screen display, small size, foldable and easy to carry around; Virtual reality helmet is equivalent to mobile phone+lens, which is designed with binding force, so it is relatively large and heavy. The other is a single-screen monitor, which is uncomfortable to wear and will make you dizzy after watching it for a long time.

Difference 2: Platform function W2 smart glasses have AR function and provide an all-round AR open platform, which brings users a new shocking experience of real-time integration of AR dreamland and reality. Glasses can not only watch and listen to songs online, but also check the weather, take photos and interact with mobile phones. There are many functions, all of which are realized through glasses; Virtual reality helmet (VR) is limited to watching videos in 3D split-screen format, and needs to be downloaded in advance by mobile phone. It has a single function and is simply a video player.

Difference 3: Video playback mode W2 Smart glasses are different from most smart glasses on the market. W2 smart glasses don't need to be downloaded. You can watch movies online as long as you link to WIFI. Of course, without WIFI, you can also cache it first. Compared with the virtual reality helmet, it is much worse. Not only can it not be cached, but it can't be viewed online. It needs to download the movie to the mobile phone and plug it into the virtual reality helmet to watch it. Simply put, the virtual reality helmet is actually equivalent to a video player.

Difference 4: Supported movie format W2 smart glasses adopt chips imported from the United States, with a physical resolution of 854*480. It supports left and right 3D movies and all 2D movies, and also supports 1080P HD playback and high-fidelity images, presenting clear and bright pictures with bright colors. Virtual reality helmet is equivalent to mobile phone+lens, and you need to use 3D split-screen format resources downloaded from mobile phone to watch movies.

Difference 5: adopt different technologies. W2 Smart Glasses (AR) is an all-in-one machine, which is the crystallization of the latest photoelectric technology. Virtual reality (AR) helmet is a combination of mobile phone and lens.

Difference 6: In terms of content, W2 Smart Glasses (AR) cooperates with China Digital, and the contents of glasses are all provided by China Digital, with rich and diverse contents; The content of the virtual reality (AR) helmet depends entirely on the content downloaded from your mobile phone.

Difference 7: W2 smart glasses are equipped with goggles when they leave the factory, which can not only be used as a hood, but also be equipped with myopia lenses, which is more convenient to use and can be directly used for mild myopia; The virtual reality (AR) helmet rarely considers the user's vision.

The second difference between ar glasses and vr glasses

To say that this year's hot words VR and ar are definitely indispensable, it is said that this year is the first year of VR, but there are not many users who really understand VR. Speaking of ar technology, Pokemongo (Poké mon go), which was popular all over the world a while ago, once again pushed AR technology to the craze. For some people in unknown so, AR and VR are even more silly.

Many users have searched for what AR and VR are, but you can look at Baidu Encyclopedia, which is the official industry discourse. For some small white users, it is impossible to understand this tall expression. Here I will tell you what AR and VR are, and what's the difference.

VR（Virtual Reality）

Immerse yourself in the virtual world to consume content, giving users an immersive feeling. It is to create a virtual reality world. Users use VR devices to bring themselves into this virtual world. Whether in games or movies, users can use VR devices to fully integrate themselves with the virtual world and experience the immersive feeling.

AR（Augmented Reality）

AR is augmented reality, also known as mixed reality. Through some computer technologies, virtual information is applied to our real world, and virtual commodity information is superimposed with our real world, so that they appear in the same picture or space. Just like Pokemon GO, we can scan a scene and run out of elves. In the future, this technology will be mature and widely used. For example, when a user scans an object, the description and application of the object will come out.

The difference between VR and AR

VR is a virtual scene, and users need to connect VR devices to enter the virtual world (games, movies, etc. ), and users need VR devices to interact with the virtual world.

AR is a combination of real world and virtual information, so basically it needs a camera, and virtual information is added to the scene shot by the camera for display and interaction. At present, there are many AR softwares, and you can search some AR softwares to experience them.

The difference between ar glasses and vr glasses 3

Since 20 16, VR technology and AR technology have been the focus of attention in the industry, and the .5g commercial license issued at the end of last month has once again pushed VR to the forefront of AR. But even if the discussion has not stopped, many people are still in a state of incomprehension about VR technology and AR technology. So, what is the relationship between VR and AR? What are the similarities and differences between them? In order to answer your question, Arji bought this article, hoping to really "answer questions".

What is VR/AR? VR, VR (Virtual Reality) and AR (Augmented Reality) are the latest technologies that have attracted wide attention in recent years. Although both have virtual components, their proportions are different. For people who are not familiar with this field, it is easy to confuse the two. In short, the difference between VR and AR is that the former is completely virtual and a brand-new scene, while the latter is superimposed on the real scene, and the feeling is more real and natural. In addition, the difference between AR and VR lies in the interaction mode, application mode and development direction.

VR（Virtual Reality）

VR virtual reality scene is interactive, not one-way. This is the same as we interact with smart phones by controlling their screens. Here we interact with computer machines through mouse and keyboard, and the mainstream control interaction modes of VR devices are as follows:

Gesture control: users can interact in the VR interactive scene they see by wearing specific glove devices.

Head tracking: it means that the scene in VR line of sight will change according to the head's visual angle movement.

Tactile feedback: this is more powerful, that is, users wear specific VR protective gear, which will help users achieve tactile feedback in VR scenes. For example, when playing a gunfight game, the protective gear will simulate the feeling of being hit.

The visual effect of VR scene is 3D, but it is essentially different from common 3D games and movies. The range of human eyes under a fixed visual angle is usually about 120 degrees, which is also the best range for us to watch movies in the cinema. If it exceeds this range, the line of sight will overflow the screen, and the 3D effect brought by the screen will be lost. Compared with the traditional 3D screen, the difference is that VR has a 720-degree 3D immersion, that is, no matter how you look at the internal scene of VR from all angles, it will produce a 3D effect, so that you can observe all the pictures. This is the so-called "immersion" of virtual scenes.

AR augmented reality

Different from the immersion of VR virtual reality, AR augmented reality is to enhance the visual experience of the real world through devices. In other words, the feeling does happen in the real world where the experiencer lives, but the virtual scene is superimposed on the real world by using equipment, which brings more levels of feeling.

Relative to the full set of VR equipment (helmet, gloves, etc.). ), AR devices are often lighter, such as Google Glass products.

In addition to wearing, AR technology is mostly realized through smart phone applications, and at present, many Internet technology companies have joined the ranks of AR applications based on app. For example, AR Ji Bu APP is an application-oriented app with AR technology as its core. It overlays a virtual scene (3D model of a product) on the real world, allowing users to experience the application effect of the product with their own eyes in the real environment and realize early perception of the product effect.

In addition, by purchasing the scanned product object through AR Ji, a series of parameters of the product can be immediately called up for users' reference. Compared with enterprise sales, this will be a brand-new application and a tool carrier to completely improve enterprise sales. At present, AR Ji Bu has been opened to furniture, machinery, packaging, ceramics and other manufacturing enterprises, making the sales experience of enterprise products more interactive.

Development direction of augmented reality/virtual reality

It can be seen that AR and VR are still very different, so in terms of development space, the combination of the two can completely change the entertainment and life experience of human beings, which is beyond doubt, but in terms of direction, what is the difference between the two?

Let's discuss VR first. Because of its completely virtual scene, it may focus more on entertainment and experience in applications, such as games and movies. Headphones will open the 720-degree experience mode, allowing you to completely enter the virtual environment, breaking the current limit of viewing angle 120 degrees through the screen, bringing better interaction and a broader viewing experience.

Unlike VR fully virtual scenes, AR technology combines real and virtual scenes, in other words, you can see both real and virtual environments at the same time. For example, in the street, you can scan the promotion activities of the supermarket through the mobile phone camera without entering the store, and you can see the graffiti left by the people sitting on the street bench in this virtual space before, and so on. All this can only be achieved by combining virtual and realistic AR technology.

Is the blue light of vr virtual glasses harmful to human eyes?

VR virtual glasses without anti-blue light treatment are harmful. Not only VR virtual glasses, but also TVs and computers are harmful.

Short-wave blue light is extremely energetic and can penetrate the lens to reach the retina. Blue light irradiation on retina will produce free radicals, which will lead to the decline of retinal pigment epithelial cells, and the decline of epithelial cells will lead to the lack of nutrients in photoreceptor cells, thus causing visual damage, which is irreversible. In other words, blue light does irreparable harm to the eyes.

Therefore, when choosing VR glasses, you must choose those VR glasses that have been treated with anti-blue light. At present, I know that there are three kinds of VR masters who can prevent blue light in China, storm mirror and big friend VR.

What are the functions of vr glasses?

The full name of VR glasses is virtual reality glasses, also known as virtual reality head-mounted display equipment, VR head display, VR glasses, glasses VR and so on. VR Head Display is the product of simulation technology, computer graphics, man-machine interface technology, multimedia technology, sensor technology, network technology and so on. It is a brand-new human-computer interaction method created by computer and the latest sensor technology.

With VR eyes, you can enjoy IMAX-level viewing effects, and 3D movies are in front of you, bringing an immersive experience. When people play games, they can immerse themselves in the game and blend into the world of the game, which is more appropriate and more real. Therefore, VR head-mounted display equipment is an inter-generational product. Not only let every lover experience it with surprise and joy, but also be deeply fascinated by its birth and prospect.