Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Hand-Object Interaction(also: Hand-Object Interactions, HOI)
- The full range of physical actions people perform when grasping, touching, holding, manipulating, or gesturing toward objects with their hands. In accessibility research, hand-object interactions are studied as natural intent cues that can drive assistive technology: for blind…
- Head Pose Estimation(also: Head Orientation Detection, Gaze Direction Estimation)
- A computer vision technique that determines the orientation or direction a person's head is facing, typically classifying whether someone is looking towards or away from the camera. In accessibility contexts, head pose estimation can help blind users determine whether a passerby…
- Histogram of Oriented Gradients(also: HOG)
- A feature descriptor technique used in computer vision for object detection that counts occurrences of gradient orientations in localized portions of an image. HOG captures edge and texture information by dividing the image into cells and computing gradient direction histograms.…
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