Table of Contents
Introduction
Key Features
Problems Faced1
②
③
Key Technologies1, Environment Modeling Technology
2, Stereo Synthesis and Stereoscopic Display Technology
3, Haptic Feedback Technology
4, Interaction Technology
5, system integration technology
Representative equipment BOOM removable display
Data gloves:Data gloves
TELETACT gloves
Data suits
Categorization of virtual reality technology Desktop-level virtual reality
Input virtual reality
Augmented Reality Virtual Reality
Distributed Virtual Reality
Applications 1. in technology development
2. in business
3. in healthcare
4. in entertainment
5. in education
6. in industry
5. now
6. outlook
Summary Introduction
Key Features
Problems Faced ①
②
③
Key Technologies 1. Environment Modeling Technology
2. Stereo Sound Synthesis and Stereo Display Technology
3. Haptic Feedback Technology
4. Interaction Technology
5. System Integration Technology
Representative devices BOOM removable display
Data gloves:Data gloves
TELETACT gloves
Data suits
Classification of virtual reality technology Desktop-level virtual reality
Input virtual reality
Augmented reality virtual reality
Distributed virtual reality
Applications 1. p>
Applications 1. in technology development
2. in business
3. in medicine
4. in entertainment
5. in education
6. in industry
5. now
6. in the future
Summary
Expansion of Virtual Reality Technology
Edit Introduction to this paragraph
Virtual reality technology has a virtual nature beyond reality. It is a new computer technology developed along with multimedia technology, which utilizes three-dimensional graphic generation technology, multi-sensor interaction technology, and high-resolution display technology to generate a three-dimensional realistic virtual environment, and the user needs to enter the virtual environment through special interactive devices. This is a new comprehensive information technology, which integrates digital image processing, computer graphics, multimedia technology, sensor technology and other branches of information technology, thus greatly advancing the development of computer technology. One of its main functions is to generate graphics in the virtual realm, so it is also known as the graphics workstation. Currently the most widely used in this field is SGI, SUN and other manufacturers of specialized workstations, but recently based on the Intel Pentium Ⅲ (Ⅳ) generation of chips and graphics acceleration card microcomputer graphics workstations with excellent price-performance ratio, there may be a breakthrough. Image display equipment is used to produce three-dimensional visual effects of the key peripherals, the current common products include light valve glasses, three-dimensional projector and helmet display. Among them, high-grade helmet displays provide high-resolution, large field-of-view virtual scenes with stereo headphones while shielding the real world, which can give a strong sense of immersion. Other peripherals are mainly used to realize the interaction function with virtual reality, including data gloves, three-dimensional mice, motion trackers, force feedback devices, voice recognition and synthesis systems, etc. The application of virtual reality technology is very promising. It began with the needs of military and aerospace fields, but in recent years, the application of virtual reality technology has taken a big step into industry, architectural design, education and training, culture and entertainment. It is changing our lives. The words virtual and reality have contradictory meanings, and it seems meaningless to put these two words together, but the development of science and technology has given it a new meaning. The clear definition of virtual reality is not very clear, according to the first proposed the concept of virtual reality scholars J. Laniar's statement, virtual reality, also known as imaginary reality, means "with electronic computer synthesis of the artificial world". From this, it can be clearly seen that this field has an inseparable and close relationship with computers, and information science is the basic premise of synthesizing virtual reality.
Edit the main features
Multi-Sensory - the so-called multi-perception means that in addition to the visual perception of general computer technology, there is also auditory perception, force perception, tactile perception, motion perception, and even include taste perception, smell perception, etc. The ideal virtual reality technology should have the following features. The ideal virtual reality technology should have all the perceptual functions that people have. Due to the limitation of related technology, especially sensing technology, the perception function of virtual reality technology is limited to visual, auditory, force perception, tactile perception, motion and so on. Immersion - also known as sense of presence or sense of existence, refers to the degree of realism that the user feels as the protagonist existing in the simulated environment. Ideal simulation environment should make it difficult for users to distinguish the real from the fake, so that the user is fully engaged in the computer to create a three-dimensional virtual environment, the environment looks real, sounds real, moving is real, and even smelled, tasted, and so on all the feelings are real, as in the real world, the same feeling. Interactivity - the degree to which the user can manipulate objects within the simulated environment and the naturalness of the feedback received from the environment (including real-time). For example, the user can use their hands to directly grasp the virtual objects in the simulation environment, when the hand has the feeling of holding something, and can feel the weight of the object, the field of view of the object to be grasped can also be immediately with the movement of the hand and move. Conceptualization (Imagination) - also known as autonomy - emphasizes that virtual reality technology should have a broad imaginable space, can broaden the scope of human cognition, not only can reproduce the real existence of the environment, but also can be arbitrary conceptualization of objective non-existent or even impossible environment. or even impossible environments. Generally speaking, a complete virtual reality system consists of a virtual environment, a high-performance computer as the core of the virtual environment processor, a helmet display as the core of the visual system, speech recognition, sound synthesis and sound positioning as the core of the auditory system, orientation tracker, data gloves and data clothing as the main body of the body orientation and posture tracking equipment, as well as taste, smell, touch and force feedback systems and other functional Unit Composition