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ViSiCAST SiGML Gesture Semantics, 2000-10-18 1 SiGML Signing Gestures – Semantic Model Ralph Elliott, SYS, UEA ViSiCAST 2000-10-18.

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Presentation on theme: "ViSiCAST SiGML Gesture Semantics, 2000-10-18 1 SiGML Signing Gestures – Semantic Model Ralph Elliott, SYS, UEA ViSiCAST 2000-10-18."— Presentation transcript:

1 ViSiCAST SiGML Gesture Semantics, SiGML Signing Gestures – Semantic Model Ralph Elliott, SYS, UEA ViSiCAST

2 ViSiCAST SiGML Gesture Semantics, Main Concepts (for Manual Gestures) Hand Configuration Location –in “signing space” –i.e. relative to the body of the signer Motion –i.e. “actions” of various kinds

3 ViSiCAST SiGML Gesture Semantics, Hand Configuration Hand Shape – hundreds of them Hand Orientation –“finger base orientation” –“palm orientation” –…”the 26 directions” from the centre of a cube to –vertices –midpoints of faces and edges

4 ViSiCAST SiGML Gesture Semantics, Location (i) Positions on head and body –e.g. top of head, nose, neck, chest level etc. Modifiers indicate –position on “left-centre-right” spectrum –“contact distance” touching, close, normal, far

5 ViSiCAST SiGML Gesture Semantics, Location (ii) Positions on (non-dominant) arm and hand –e.g. upper arm inside of elbow, ball of thumb, middle-joint-of-ring finger

6 ViSiCAST SiGML Gesture Semantics, Motion – Main Features Absolute – i.e. “targeted” –new hand positionand/or –new hand configuration Relative –direction of motion from initial configuration –implicit target … a “normal” distance

7 ViSiCAST SiGML Gesture Semantics, Motions – Composition Temporal Sequence –of distinct motionsand/or –repetitions of a single motion single or multiple Parallel –i.e. several motions over a single temporal interval

8 ViSiCAST SiGML Gesture Semantics, Directed Motion – Variants Straight Curved –small, medium or large curvature of arc Wavy and Zig-zag Circular and Elliptical –varying no. of rotations … All with varying direction/orientation

9 ViSiCAST SiGML Gesture Semantics, Motion – Modality Fast Slow Rest – “Stoppage at start” Tense Sudden Halt

10 ViSiCAST SiGML Gesture Semantics, In Addition... Specification of “two-handed” signs –various forms of symmetry –plus modifications Non-manual actions –e.g. shoulder-shrug, lip-movement –…definition under construction (at Hamburg)


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