Glossary

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Video Communication(also: Video Relay, Video-Based Communication)

The use of video technology for real-time or asynchronous communication, including video calls, video messages, and video posts on social media. Video communication is the primary medium for remote sign language use, as sign languages require visual transmission of hand…

Video Processing(also: Video Manipulation, Video Editing Pipeline)

The computational techniques used to analyze, modify, and transform video content, including operations like segmentation, object removal, background replacement, audio separation, caption generation, and visual effects. In accessibility contexts, video processing enables…

Video See-Through(also: 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 lenses. Video see-through systems like the Apple Vision Pro capture the environment…

Video see-through(also: 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 manipulation of the visual feed before presentation. For low vision users, video…

Video-Sharing Platform(also: 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 information and community support for people with disabilities, including those…

Virtual World(also: Virtual Environment, Online Virtual World)

A computer-simulated environment where users interact with each other and digital objects through graphical representations, often in real time. Virtual worlds range from 2D browser-based platforms to fully immersive 3D social VR environments accessed through head-mounted…

Voice Activity Detection(also: VAD, Speech Detection)

A signal processing technique that automatically determines whether a segment of audio contains human speech or not. In accessibility applications, voice activity detection is used in audio description timing systems to identify non-speech segments where descriptions can be…

Voice over IP(also: VoIP, Internet Telephony, IP Telephony)

Technology that enables voice communication over internet protocol networks rather than traditional telephone lines. VoIP applications such as Skype, Zoom, and Teams allow voice and video calls over the internet at low cost. For accessibility, VoIP presents both opportunities…

Voice over Internet Protocol(also: VoIP, IP Telephony, Internet Calling)

Technology that enables voice communication over internet networks rather than traditional telephone lines. VoIP converts voice signals into digital packets transmitted over IP networks, enabling features like video calling, lower costs, and flexible integration with other…

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