Glossary
Searchable terminology from accessibility, web standards, and related fields.
840 results found in assistive technology.
- Video Conferencing (Videoconferencing, Video Teleconferencing, Video Call)
- Real-time visual and audio communication between two or more people at different locations using video cameras, displays, and network connections. Video conferencing has significant accessibility impl…
- Video Conferencing Accessibility (Virtual Meeting Accessibility, Online Meeting Accessibility)
- The design and implementation of video conferencing platforms to be usable by people with disabilities, including those using screen readers, keyboard-only navigation, captions, and other assistive te…
- Video Customization (Video Personalization, Adaptive Video)
- The ability for viewers to modify the visual and auditory presentation of video content to suit their individual needs and preferences. Video customization for accessibility can include adjusting layo…
- Video Magnifier (CCTV Magnifier, Electronic Magnifier, Desktop Video Magnifier)
- An assistive device that uses a camera to capture and display magnified images of printed material, objects, or other visual content on a screen. Video magnifiers range from portable handheld units to…
- Video Remote Interpreting (VRI)
- A fee-based service that provides sign language interpretation via video conferencing technology, where the interpreter is located remotely rather than physically present with the deaf and hearing par…
- Video See-Through (VST, Video Pass-Through)
- A type of head-mounted display architecture where the user perceives the real world through camera feeds displayed on screens inside the headset, rather than looking directly through transparent lense…
- Video modeling (Video-based modeling, Video self-modeling)
- An evidence-based instructional strategy that uses video recordings to demonstrate target behaviors, social skills, or task sequences, which the viewer then imitates. For children with autism, video m…
- Video relay service (VRS)
- A telecommunications service that enables deaf and hard-of-hearing sign language users to communicate with hearing people via telephone through a video link with a sign language interpreter. The deaf …
- Video see-through (VST, Camera passthrough)
- A display approach in head-mounted devices where the user's view of the real world is captured by outward-facing cameras and displayed on screens inside the headset, allowing complete digital manipula…
- Video-Based Sign Language Dictionary (Video Sign Dictionary, Sign Language Video Lookup)
- A digital dictionary that allows users to look up sign language signs by submitting video of themselves performing the sign, rather than searching by text or linguistic features. These systems use sig…
- Virtual Cursor (Browse Mode Cursor, Virtual PC Cursor)
- A navigation mechanism used by screen readers that creates a linearized, text-based representation of a web page through which users can move sequentially. Unlike a visual cursor that points to a loca…
- Virtual Exploration (Virtual Navigation, Virtual Travel)
- The use of technology to simulate the experience of navigating or exploring a real-world environment without physically being there. For people with visual impairments, virtual exploration typically r…
- Virtual Human (Embodied Agent, Animated Character)
- A computer-generated human character used in accessibility applications to convey information through human-like movements, gestures, and expressions. In sign language accessibility, virtual humans se…
- Virtual Peer (VP, Virtual Agent, Animated Conversational Agent)
- A computer-animated character designed to simulate peer interaction, typically used in educational or therapeutic settings. Virtual peers can engage in conversation, model social behaviors, and provid…
- Virtual Reality (VR)
- An immersive technology that creates a fully computer-generated environment, replacing the user's view of the real world with a simulated one. VR is typically experienced through a head-mounted displa…
- Virtual Tour (3D Virtual Tour, Digital Walkthrough)
- A digital replica of a physical environment, typically captured using 360-degree cameras and depth sensors, that allows users to remotely explore and navigate through a space in a semi-immersive exper…
- Virtual reality (VR, Immersive virtual environment)
- A computer-generated simulation of a three-dimensional environment that users can interact with using specialized hardware such as head-mounted displays and motion controllers. Virtual reality present…
- Viseme (Visual Phoneme)
- The visual equivalent of a phoneme — the distinct mouth shape or lip position that corresponds to a speech sound as seen on a speaker's face. Unlike phonemes, which are auditory units, visemes are vis…
- Vision-Language Model (VLM, Multimodal AI Model, Large Multimodal Model)
- An artificial intelligence model that can process and reason about both visual (image/video) and textual information simultaneously. Vision-language models like GPT-4o, Claude, and Gemini can describe…
- Visual Access Technology (Visual Assistance Technology, Visual Access Tools)
- Technologies that help blind and low vision people understand visual content in both digital and physical environments. Traditional visual access technologies include screen readers, magnification sof…