Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Aira
- A visual assistance service that connects blind and low vision users with trained human agents who provide real-time visual information through a smartphone camera or smart glasses. Unlike AI-only solutions, Aira agents can answer complex questions, provide nuanced descriptions,…
- Envision AI(also: Envision)
- An AI-powered visual assistance technology available as a smartphone app and as smart glasses that provides scene descriptions, text reading, and object identification for blind and low vision users. Envision uses computer vision and large language models to describe visual…
- Fiducial Marker(also: AR Marker, Visual Marker, Reference Marker)
- An artificial visual landmark placed in a physical environment to serve as a reference point for image processing systems. Fiducial markers — such as QR codes, ArUco markers, and BCH matricial markers — are designed for robust detection by cameras under varying conditions of…
- TapTapSee
- An AI-enabled visual assistance app designed for blind and low vision users that identifies objects through photos taken with a smartphone camera. Users double-tap their screen to take a photo, and the app uses image recognition to identify and describe the object. TapTapSee is…
- Visual Interpretation Services(also: VIS, Remote Sighted Assistance, Visual Assistance Services)
- Visual interpretation services are technology platforms that connect blind and low vision users with sighted assistants (either human volunteers or paid professionals) who provide real-time visual descriptions through video calls or image sharing. Services like Aira and Be My…
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