Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Visual Affordance(also: Visual Affordances)
- A visually conveyed cue that signals how an object can be used or what it represents - for example, a handle suggesting 'grasp', a button suggesting 'press', or color and labeling suggesting product identity. Many visual affordances are inaccessible through touch alone: blind…
- Visual Dialogue(also: Visual Dialog, VisDial)
- Visual dialogue is an AI task that involves holding a multi-turn natural language conversation about visual content such as an image or video frame. Unlike single-turn visual question answering (VQA), visual dialogue systems maintain context across multiple exchanges, using…
- Visual Interpreter(also: Visual Interpreter Service, Visual Description Service, VIDS)
- A visual interpreter or description service (VIDS) is a technology or human-powered service that provides people who are blind or have low vision with descriptions of their visual surroundings, typically by receiving camera feeds from the user's smartphone or smart glasses.…
- Visual Presentation(also: Text Presentation)
- The way text and content are visually rendered on screen or in print, encompassing typography, layout, color, spacing, and formatting choices. Visual presentation significantly affects readability and accessibility for all users but is especially critical for people with…
- Visual Processing(also: Visual Processing Disorder, Visual Perception)
- The brain's ability to interpret and make sense of visual information received through the eyes. Visual processing difficulties can affect reading, spatial awareness, figure-ground discrimination, and the ability to process complex visual layouts, even when visual acuity is…
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