Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
Search results
- Facial Expression
- The use of facial muscles to convey emotions, reactions, or linguistic meaning. In sign languages such as ASL, facial expressions serve a grammatical function far beyond conveying emotion — they mark questions (raised eyebrows for yes/no questions, furrowed brows for…
- Facial Expression Recognition(also: FER, Facial Action Recognition)
- Computer vision technology that detects and classifies facial expressions from images or video. In sign language contexts, facial expression recognition is essential for capturing non-manual signs — the facial movements that carry grammatical meaning in ASL, such as raised…
- Facial Expressions in Sign Language(also: Non-Manual Markers, Non-Manual Signals, NMMs)
- Meaningful facial movements and configurations that serve grammatical, lexical, and affective functions in sign languages. In American Sign Language, facial expressions are not merely emotional indicators but carry essential linguistic information including marking questions…
- Fingerspelling(also: Manual alphabet, Dactylology)
- A method of spelling out words letter by letter using hand shapes, used within sign languages to represent proper nouns, technical terms, or words that lack a dedicated sign. Each letter of the written alphabet corresponds to a specific hand configuration. Fingerspelling poses…
- Fingerspelling(also: Manual Alphabet, Dactylology)
- A method of spelling out words letter-by-letter using hand positions that represent each letter of the alphabet. In American Sign Language, fingerspelling uses a one-handed manual alphabet and is primarily used for proper names, technical terms, and words that do not have…
- Frame Rate(also: Frames Per Second, FPS, Frame Frequency)
- Frame rate is the number of still images (frames) displayed or captured per second in a video stream, usually measured in frames per second (fps). Common values include 24 fps (cinema), 30 fps (US broadcast), and 60 fps (high-motion content); video calling and streaming systems…
- French Sign Language(also: LSF, Langue des Signes Française)
- French Sign Language (Langue des Signes Française, or LSF) is the primary sign language used by the Deaf community in France. Legally recognized by the French Handicap Law of 2005 as having educational, pedagogical, and cultural legitimacy, LSF is a complete natural language…
7 results.