Glossary

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Depth Camera(also: Depth Sensor, RGB-D Camera, 3D Camera)

A depth camera is a device that captures both standard visual imagery and per-pixel distance information, producing a 3D representation of the scene. Technologies include structured light (projecting patterns and measuring distortion), time-of-flight (measuring how long light…

Depth Sensor(also: Depth Camera, RGB-D Sensor, 3D Sensor)

A device that captures three-dimensional depth information about a scene in addition to standard two-dimensional imagery. Depth sensors measure the distance from the camera to objects in the environment, enabling more accurate detection and tracking of faces, hands, and body…

Digital Crown(also: Watch Crown, Rotary Input)

A physical rotary input control on the Apple Watch and some other smartwatches that can be turned to scroll, navigate, or adjust values. The digital crown provides tactile, proportional input that does not require looking at a screen, making it valuable for accessibility…

Digital Signal Processor(also: DSP)

A specialised microprocessor designed to perform mathematical operations on digital signals in real time, such as filtering, compression, and pattern recognition. In assistive technology, DSPs are used in hearing aids to process and amplify sound, in speech recognition systems,…

Digital fabrication(also: Fab, Digital manufacturing)

The process of creating physical objects from digital designs using computer-controlled tools such as 3D printers, laser cutters, and CNC machines. In accessibility contexts, digital fabrication enables the creation of customised assistive devices tailored to individual needs —…

Dual Channel Audio(also: Dual Audio Channel, Two-Channel Audio)

An audio configuration that provides two independent, simultaneous audio streams to a user, typically through separate channels in a headset. In assistive technology, dual channel audio is important for vision impaired users in call centre environments who need to hear screen…

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