Augmented reality is a technique for calculating the position and angle of a camera image in real time and adding corresponding images. The goal of this technology is to place the virtual world on the screen and interact with it in the real world.
This technique was first proposed in 1990. With the improvement of the computing power of portable electronic products, the use of augmented reality is becoming more and more widespread.
Augmented reality technology, which is a new technology that integrates real world information and virtual world information "seamlessly". It is an entity information (visual information, sound, etc.) that is difficult to experience in a certain time and space of the real world. Taste, touch, etc., through computer and other science and technology, simulation and then superimposition, the virtual information is applied to the real world, perceived by human senses, thus achieving a sensory experience beyond reality. The real environment and virtual objects are superimposed in real time on the same picture or space.
Augmented reality technology not only displays the information of the real world, but also displays the virtual information at the same time, and the two kinds of information complement each other and superimpose. In visual augmented reality, users can use the helmet display to combine the real world with computer graphics to see the real world around it.
Augmented reality technology includes new technologies and new methods such as multimedia, 3D modeling, real-time video display and control, multi-sensor fusion, real-time tracking and registration, and scene fusion. Augmented reality provides information that is different from what humans can perceive in general.
VrVirtual reality technology is a computer simulation system that can create and experience virtual world. It uses computer to generate a simulation environment. It is a multi-source information fusion, interactive 3D dynamic vision and system simulation of entity behavior. Immerse yourself in the environment.
Virtual reality technology is an important direction of simulation technology. It is a collection of various technologies such as simulation technology and computer graphics human-machine interface technology multimedia technology sensing technology network technology. It is a challenging cross-cutting technology frontier and research field. . Virtual reality technology (VR) mainly includes simulation environment, perception, natural skills and sensing equipment. The simulation environment is a computer-generated, real-time, dynamic, three-dimensional, realistic image.
Perception means that the ideal VR should have the perception that everyone has. In addition to the visual perception generated by computer graphics technology, there are also perceptions such as hearing, touch, force, and motion, and even olfactory and taste, also known as multi-perception. Natural skills refer to the rotation of the person's head, eyes, gestures, or other human behaviors. The computer processes the data that is appropriate to the actions of the participants, responds to the user's input in real time, and feeds back to the user's facial features. . A sensing device is a three-dimensional interactive device.
What is the difference between augmented reality technology and vr?Virtual reality definition
Virtual Reality (VR) refers to the use of computer technology as the core of modern high-tech means to generate a virtual environment, users with a special input / output device, natural interaction with objects in the virtual world, thereby through the visual, Hearing and touch are the same feelings as the real world.
Virtual reality is a computer advanced human-machine interface based on immersion, interactivity and conception. It uses computer graphics, simulation technology, multimedia technology, artificial intelligence technology, computer network technology, parallel processing technology and multi-sensor. Technology, simulating human sensory, auditory, tactile and other sensory functions, enabling people to immerse themselves in computer-generated virtual realms and interacting with them in a natural way, such as language and gestures, to create a humane Multidimensional information space.
Augmented reality definition
Augmented Reality (AR) is a new technology that uses computer systems to generate three-dimensional information to enhance users' perception of the real world. It is generally believed that the emergence of AR technology stems from the development of Virtual Reality (VR), but there are obvious differences between the two. Traditional VR technology gives users a completely immersive effect in the virtual world, and creates another world; AR technology brings computers into the real world of users, and enhances them by listening, watching, touching, and smelling virtual information. The perception of the real world has transformed from "people adapt to the machine" to technology "people-oriented".
Comparative Analysis of Virtual Reality and Augmented Reality1, different focus
VR emphasizes the user's complete immersion of the senses such as sight, hearing and touch in the virtual environment, emphasizing the insulation of the user's senses from the real world and immersed in a completely computer-controlled information space.
AR not only does not isolate the surrounding real environment, but also emphasizes the existence of users in the real world and strives to maintain the invariance of its sensory effects. The AR system is designed to enhance the user's understanding of the real environment by integrating a computer-generated virtual environment with the real environment.
2, different technology
VR focuses on creating a virtual scene for people to experience. AR emphasizes the ability to restore human vision, such as automatically identifying and tracking objects, rather than manually pointing out; automatically tracking and 3D modeling the surrounding real scenes, rather than doing a very similar thing according to the scene.
3, different equipment
VR typically requires a display device that isolates the user's vision from the real world, typically using an immersed helmet display. AR needs a display device that can integrate a virtual environment with a real environment.
4, interactive differences
Because VR is a pure virtual scene, VR equipment is more used for interactive interaction between users and virtual scenes. More use is: location tracker, data glove, motion capture system, data helmet and so on. due to
AR is a combination of real scene and virtual scene, so basically need a camera, based on the screen shot, combined with virtual screen for display and interaction, such as Google Glass.
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