Glossary

Search results

Cell Navigation(also: Table Cell Navigation, Cell-by-Cell Navigation)

Cell navigation is a method of accessing tabular data non-visually by moving between individual cells using directional commands (up, down, left, right). Rather than reading a table linearly from top-to-bottom, cell navigation allows screen reader users to traverse the…

Clock Technique(also: Clock Method, Clock Face Direction System)

An orientation method used in mobility training for blind and visually impaired people in which directions are communicated using the positions on an analogue clock face. The user imagines standing at the centre of a clock with 12 o'clock directly ahead, 3 o'clock to the right,…

Cognitive Map(also: Cognitive Mapping)

An internal mental representation of spatial relationships within an environment, formed through direct experience, exploration, or learning from maps and descriptions. Cognitive maps allow people to understand where they are relative to other locations, plan routes, and orient…

Collision Prediction(also: Collision risk prediction, Trajectory prediction)

The task of estimating the future trajectories of surrounding pedestrians and obstacles and determining whether any of them will intersect with a user's own future position within a short prediction horizon (typically 2–4 seconds). In assistive technology for blind travellers,…

Community Navigation(also: Community Travel, Community Mobility)

The ability to plan, initiate, and complete trips within one's community, including getting to transit points on time, using public transportation, and accessing services at destinations. For people with cognitive disabilities such as traumatic brain injury, community navigation…

Crosswalk(also: Pedestrian Crossing, Zebra Crossing, Continental Crossing)

A marked area on a roadway designated for pedestrians to cross safely, typically indicated by painted lines or patterns on the pavement. Zebra crossings (called "continental crossings" in the US) feature bold parallel white stripes that are highly visible to drivers, while…

Crosswalk detection(also: Pedestrian crossing detection, Zebra crossing detection)

The automated identification and localization of marked pedestrian crossings in imagery using computer vision techniques. Crosswalk detection can be performed on satellite images, street-level photographs, or real-time camera feeds to populate navigation databases for blind…

Crowdsourced Accessibility Mapping(also: Collaborative Accessibility Mapping, Citizen-Sourced Accessibility Data)

The practice of using contributions from members of the public to identify, report, and map accessibility barriers and features in physical or digital environments. In urban contexts, crowdsourced accessibility mapping typically involves mobile applications that allow citizens…

Curb cut(also: Curb ramp, Dropped kerb, Pram ramp)

A small ramp built into the curb of a sidewalk at intersections and pedestrian crossings, providing a smooth transition between the sidewalk and the street. Originally mandated for wheelchair users under disability rights legislation such as the ADA, curb cuts have become a…

9 results.