What is the meaning of vr and ar what is the difference between vr and ar

Definition of vr and ar:

vr refers to virtual reality technology, is a computer simulation system that can create and experience a virtual world, which uses computers to generate a simulated environment, is a multi-source information fusion, interactive three-dimensional dynamic vision and entity behavior of the system simulation allows users to immerse themselves in the environment.

ar refers to augmented reality technology, is a real-time calculation of the position and angle of the camera image and add the corresponding image, video, 3D model of the technology, the goal of this technology is to put the virtual world on the screen set in the real world and interaction.

vr and ar difference:

1, the use of different technologies

vr is simulation technology and computer graphics human-computer interface technology multimedia technology sensing technology network technology and other sets of technology.

Ar contains multimedia, three-dimensional modeling, real-time video display and control, multi-sensor fusion, real-time tracking and registration, scene fusion and other new technologies and new means.

2, the principle of different

vr is the use of computer-generated a simulation of the environment, a multi-source information fusion, interactive three-dimensional dynamic view and entity behavior of the system simulation allows users to immerse into the environment. The main principle is to build a virtual environment.

And the basic idea of ar is to add images, sounds, and other sensory enhancements to a real-world environment in real time.

3, different functions

vr can realize human-computer interaction, the existence of a variety of perceptions, can completely immerse a person in the virtual world, while ar technology must be through the combination of the reality, the intelligence is lower, can not be human-computer interaction, and can not make a person forget the reality.

Expanded Information:

1, multisensory. Refers to in addition to the general computer has the visual perception, there are auditory perception, tactile perception, motion perception, and even include taste, smell, perception. The ideal virtual reality should have all the perceptual functions that people have.

2, sense of existence. Refers to the user feels as the protagonist exists in the simulation environment of the real degree. Ideal simulation environment should be reached so that the user is difficult to distinguish between the real and the fake degree.

3, interactivity. Refers to the degree of user manipulation of objects within the simulation environment and the natural degree of feedback from the environment.

4, autonomy. Refers to the degree to which objects in a virtual environment act according to real-world physical laws of motion.

ar characteristics:

1, the real world and virtual information integration;

2, with real-time interactivity;

3, is added to locate the virtual object in three-dimensional scale space.

Baidu encyclopedia-vr

Baidu encyclopedia-ar