Virtual Reality (VR)
Virtual Reality (VR) technology, also known as immersive technology, is a novel practical technology that emerged in the 20th century. Virtual reality technology encompasses computer, electronic information, and simulation technologies. Its fundamental implementation involves computer-simulated environments that immerse individuals in those environments.
The term "virtual reality," as the name suggests, combines virtual and real elements. In theory, VR technology is a computer simulation system that enables the creation and experience of virtual worlds. It utilizes computer-generated signals to simulate environments, allowing users to immerse themselves in these environments. VR technology transforms real-life data into phenomena that can be perceived by individuals, whether they are tangible objects from the real world or substances that are imperceptible to the naked eye but are represented through three-dimensional models. Because these phenomena are not directly visible to us but are simulated representations of the real world through computer technology, they are referred to as virtual reality.
Virtual reality technology has gained increasing recognition, allowing users to experience the most realistic sensations in virtual worlds. The fidelity of its simulated environments is such that they are indistinguishable from the real world, providing individuals with a sense of being present in those environments. Additionally, virtual reality possesses all the sensory functions that humans have, such as auditory, visual, tactile, gustatory, and olfactory senses. Finally, it features a powerful simulation system, truly realizing human-computer interaction, enabling individuals to freely manipulate and receive the most realistic feedback from the environment. It is these characteristics of virtual reality technology—its existence, multisensory nature, and interactivity—that have endeared it to many people.
Key Technologies
Dynamic Environment Modeling Technology: The establishment of virtual environments is the core content of VR systems. Its purpose is to obtain three-dimensional data of actual environments and establish corresponding virtual environment models according to application needs.
Real-Time 3D Graphics Generation Technology: Three-dimensional graphics generation technology is already quite mature. The key lies in "real-time" generation. To ensure real-time performance, the graphics refresh rate should be no less than 15 frames per second, preferably exceeding 30 frames per second.
Augmented Reality (AR)
Augmented Reality (AR) technology is a technique that ingeniously integrates virtual information with the real world. It widely employs various technologies such as multimedia, 3D modeling, real-time tracking and registration, intelligent interaction, and sensing to simulate and apply computer-generated text, images, three-dimensional models, music, videos, and other virtual information to the real world, complementing each other, thereby enhancing the real world.
Augmented reality technology, also known as mixed reality, AR augmented reality technology is a newer technological content that promotes the comprehensive integration of real-world information and virtual world information. It simulates and processes the physical information that is difficult to experience within the spatial range of the real world on the basis of computer technology, overlays virtual information content onto the real world, and is perceptible by human senses during this process, thereby achieving sensory experiences beyond reality. After the overlap between the real environment and the virtual objects, they can coexist in the same scene and space.
Augmented reality technology not only effectively reflects the content of the real world but also enables the display of virtual information. These subtle contents complement and overlap each other. In visual augmented reality, users need to overlap the real world with computer graphics on the basis of a helmet display, allowing them to fully see the real world around them. Augmented reality technology mainly involves multimedia, 3D modeling, and scene integration and other new technologies and methods. There are significant differences between the information content provided by augmented reality and the information content perceptible by humans.
Tracking Registration Technology
To achieve seamless superimposition of virtual information and real scenes, it is necessary for virtual information to be accurately registered in three-dimensional space with the real environment. This involves both user spatial localization tracking and the positioning of virtual objects in real space. The positioning of mobile device cameras needs to correspond to virtual information, which requires tracking technology to accomplish. The quality of tracking registration technology directly determines the success of augmented reality systems. Commonly used tracking registration methods include tracker-based registration, machine vision-based tracking registration, and hybrid tracking registration technology based on wireless networks.
Mixed Reality (MR)
Mixed Reality (MR) technology is a further development of virtual reality technology, which creates an interactive feedback loop between the real and virtual worlds by presenting virtual scene information in real scenes, thus enhancing the user's sense of reality.
MR (including augmented reality and augmented virtual reality) refers to a new visual environment created by combining real and virtual worlds. In this new visual environment, physical and digital objects coexist and interact in real-time. The system typically features three main characteristics:
- It combines virtual and real elements.
- It operates in virtual three-dimensional (3D) space.
- It runs in real-time.
The implementation of mixed reality (MR) requires an environment where interactions with the real world are possible. If everything is virtual, it falls within the realm of VR. If virtual information can only be simply overlaid on real objects, it is AR. The key point of MR is interaction with the real world and timely acquisition of information. VR consists of purely virtual digital images, while AR combines virtual digital images with naked reality, and MR consists of digitalized reality combined with virtual digital images. MR technology combines the advantages of VR and AR, allowing for better utilization of AR technology.
FALenses Technology specializes in providing machine vision core hardware. You can go to the official website of FALenses Technology at https://www.falenses.com/ for more information.