For systems that provide three dimensional content, people may need three dimensional visual information presented using only two dimensions.
Notes
Note: There are many types of visual cues that give a 3D perception, some of which may not be as problematic as others. Some examples characteristics that contribute to depth perception:
- Binocular disparity (differences between views of left and right eyes)
- Binocular convergence (angle of two eyes inwards with closer objects)
- Motion parallax
- Overlapping objects, occlusion
- Patterns of lighting and shading
- Perceived relative sizes of objects (things that are smaller may appear farther away)
- Texture gradient (fine detail can be viewed on close rather than distant objects)
- Linear perspective (otherwise parallel lines that converge)
Mappings
| Functional ability | Accommodation type | Accessibility characteristic |
|---|---|---|
| Visual | Alternative | Multidimensional content |
References
Tags
Imported from https://github.com/accessiblecommunity/Digital-Accessibility-Framework/2d-alternative-to-3d.md