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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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Scene Change Detection(also: Shot Boundary Detection, Scene Transition Detection)
An automated technique for identifying transitions between different scenes or shots in video content by analyzing visual differences between consecutive frames. In audio description workflows, scene change detection helps determine optimal moments for inserting descriptions, as…
Semantic Analysis(also: Semantic Content Analysis, Semantic Similarity)
The computational process of determining meaning and relationships within text, images, or other content by analyzing their semantic properties rather than just surface-level features. In accessibility, semantic analysis enables automated tools to go beyond detecting the…
Semantic Web(also: Web of Data, Linked Data)
An extension of the World Wide Web in which information is given well-defined meaning through standardized formats and technologies (such as RDFa, OWL, and ontologies), enabling machines to interpret and process web content more intelligently. For accessibility, semantic web…
Short-Form Video Content(also: SFVC, Short-Form Content, SFC)
Brief video content, typically 15–60 seconds long, presented in portrait orientation and consumed via infinite vertical scroll on platforms such as TikTok, Instagram Reels, YouTube Shorts, Facebook Reels, and Douyin. The format has become an important information and community…
Silent Gap Detection(also: Silence Detection, Audio Gap Detection)
An automated technique for identifying periods of silence or absence of speech in audio tracks, used in audio description workflows to find natural insertion points for descriptions. Silent gap detection distinguishes between complete silence (no sound at all) and non-speech…
Smart Home(also: Home Automation, Connected Home)
A residence equipped with networked devices and systems that can be monitored and controlled remotely or automatically, including lighting, heating, security, and entertainment systems. Smart home technology has significant accessibility potential — enabling people with motor…
Smart Home Technology(also: SHT, Smart Home Devices)
Connected devices and systems within a home that can be controlled remotely or automated, including smart speakers, thermostats, lighting, locks, cameras, sensors, and blinds. Smart home technology uses Internet of Things connectivity, voice control, and programmable rules to…
Smart Speaker(also: Voice-Activated Speaker, Intelligent Speaker)
A wireless speaker with an integrated voice assistant that responds to spoken commands, such as Amazon Echo (Alexa), Google Home (Google Assistant), or Apple HomePod (Siri). Smart speakers serve as central hubs for smart home control, allowing users to operate connected devices,…
Social Virtual Reality(also: Social VR, SVR)
Virtual reality platforms designed primarily for social interaction, where users meet, communicate, and engage in shared activities through avatars in three-dimensional virtual spaces. Examples include VRChat, AltspaceVR, and Rec Room. Social VR presents unique accessibility…
Spatial Mapping(also: Environment Mapping, 3D Environment Scanning)
A technology used in mixed reality and augmented reality headsets that scans and creates a digital representation of the physical environment in real time. Spatial mapping identifies surfaces such as floors, walls, tables, and ceilings, enabling virtual objects (holograms) to be…
Speech Synthesis(also: Synthetic Speech, TTS Engine)
The artificial production of human speech by computer, most commonly used in text-to-speech (TTS) systems that convert written text into spoken audio. Speech synthesis is foundational to screen readers and other assistive technologies used by people with visual impairments and…
Sports Analytics(also: Data Analytics in Sports, Performance Analytics)
The use of data collection, statistical analysis, and technology to measure, track, and improve athletic performance, inform coaching decisions, develop game strategies, and enhance the spectator experience. In able-bodied sports, analytics has become a multi-billion dollar…
Surveillance technology(also: Surveillance tech, Monitoring technology)
Technologies that collect, analyse, and track data about individuals' behaviours, locations, bodies, or communications. In disability contexts, surveillance technology raises justice concerns because assistive tools (computer vision for blind users, behaviour monitoring for…

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