The difference and application of VR, AR and MR, as well as some implementation principles of AR technology

  VR Full name Virtual Reality, Virtual reality technology , Also known as spirit realm Technology , Immersive 、 Interactive and imaginative features .VR Technology is a collection of computer graphics 、 Simulation technology 、 Multimedia technology 、 Artificial intelligence technology 、 Computer network technology 、 Parallel processing technology and multi-sensor technology , Simulate human vision 、 auditory 、 The function of sensory organs such as touch , It makes people feel like they are on the scene , Immerse yourself in a computer-generated virtual world , And through language 、 Gesture, etc. for real-time communication , Enhance the sense of entry and immersion . adopt VR technology , Let people feel the reality of the real world at the same time , It can also break through the constraints of time and space , Feel the wonderful experience of entering the virtual world .
Simply speaking ： Namely VR Technology creates a completely virtual environment through devices , Immerse users .
Example ： Comic 《 Sword realm 》 PS： It's an advanced version VR, In addition to building a complete virtual environment, it can also directly receive the instructions of the brain , Did it “ Completely immersive ”.

  AR Full name Augmented Reality, Augmented reality technology . This technology uses computer technology to overlay virtual information into the real world , By mobile phone 、 Devices such as tablets display , Be perceived by people , So as to realize the great integration of real and virtual , Enrich the real world .
Simply speaking ： In the actual environment of users , Add some virtual elements .
Example ：Pokemon Go

  MR Full name Mixed Reality, Hybrid reality technology , It is the further development of virtual reality technology . It is through the introduction of real scene information in the virtual environment , The virtual world 、 Build an interactive feedback bridge between the real world and users , So as to enhance the realism of the user experience .
Simply speaking ： It can be understood as AR Upgraded version ,AR Users need to bring devices to see virtual elements superimposed in the real environment , and MR The effect can be seen by the naked eye without the user carrying the device .

-------------------------------- some VR How technology works ---------------------------------
   The most basic implementation principle is to find tags （marker） To determine the coordinates , Then put the virtual object on the corresponding coordinates , Realize the effect of superimposing virtual objects in the real environment . Tags can come from the picture materials you prepared in advance , Or a large number of image materials stored directly in the cloud . With these marks , You can judge the feature points , Match similarity , After the match is successful, the virtual objects can be displayed in the corresponding position .
   combination LBS technology , You can put markers on the map , Then users can use the information displayed on the map , Go to the real geographical location , Looking for a marker . Pokemon Go Catching elves is a similar approach .（ You can use Baidu 、 Gaud et al LBS The cloud service ）
   combination SLAM technology , It can make virtual objects more real and effective superimposed into the real environment , If you simply and rudely display virtual objects on the tag like above , Items often overlap with real things, and the effect is not good , It was used SLAM After the technology , Elves can actually stand on the table instead of overlapping the table .