Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 312 of 333
- 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 Segmentation (Scene Segmentation, Video Scene Detection)
- The process of dividing a video into meaningful segments or scenes based on visual changes, content shifts, or thematic transitions. Video segmentation enables granular customization and navigation, a…
- Video Summarization (Video Summary, Video Condensation)
- The process of creating a shortened version of a video that captures its key content, either through extractive methods (selecting key segments) or abstractive methods (generating new condensed conten…
- Video accessibility (Accessible video, Video a11y)
- The practice of making video content perceivable, operable, and understandable for people with disabilities. This encompasses captions for deaf and hard-of-hearing viewers, audio descriptions for blin…
- Video intelligibility (Signal intelligibility, Visual signal clarity)
- The degree to which a video signal can be perceived and understood by the viewer, determined by technical parameters including frame rate, bit rate, spatial resolution, and codec quality. Video intell…
- 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 Learning (VBL, video-based instruction, VBI)
- The use of pre-recorded or streaming video as a primary medium for teaching skills, procedures, or concepts, ranging from YouTube how-to tutorials and MOOCs to specialised instructional content like s…
- 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…
- Video-Sharing Platform (VSP, Video Platform)
- An online platform that enables users to upload, share, and view video content, such as YouTube, TikTok, Vimeo, and Instagram Reels. Video-sharing platforms have become important sources of health inf…
- Video-to-Haptics (Video to Haptics, V2H)
- A class of techniques that automatically generate haptic feedback (typically vibrotactile or force cues) from visual content in video, so that viewers feel sensations synchronised with what they see. …
- Videoconferencing (Video Conferencing, Video Calling, Video Meetings)
- Real-time audio-and-video communication between two or more people over a network, typically mediated by a software platform such as Zoom, Microsoft Teams, Google Meet, WhatsApp, or WeChat. Videoconfe…
- Videoconferencing Accessibility (Virtual Meeting Accessibility)
- The extent to which videoconferencing platforms like Zoom, Microsoft Teams, and Google Meet can be used effectively by people with disabilities. Key accessibility concerns include screen reader compat…
- View Hierarchy (UI Hierarchy, Accessibility Hierarchy, DOM Tree)
- The tree-structured representation of how user interface elements are organized and nested within an application. The view hierarchy defines parent-child relationships between UI components, specifyin…
- Viewability (Video Viewability)
- A subjective measure of how watchable and consumable a video is for a particular viewer, encompassing factors like ability to focus on content, level of distraction, information comprehension, and ove…
- Vignette Study (Vignette-Based Method, Vignette)
- A research method in which participants are presented with short, carefully constructed scenarios describing hypothetical or realistic social situations, then asked to make judgments about appropriate…
- Village Health Volunteer (VHV, Health Volunteer, Mor Prom)
- A locally-recruited lay community health worker who serves as a trusted bridge between formal healthcare services and households in rural or underserved areas. In Thailand, VHVs are trained and coordi…
- Violation Score (Accessibility Score, A11y Score)
- A numerical metric used to quantify the severity and prevalence of accessibility violations on a web page or within a dataset. Violation scores typically map qualitative impact levels (cosmetic, minor…