System for classifying gestures
A system for classifying gestures executed by a user on a surface or in a graphical interface comprising a meta-classification module which analyzes kinematic and spatial characteristics of an arbitrary gesture undergoing execution and assigns a class of synchronous or asynchronous gestures to this gesture.
1. A system for classifying gestures executed by a user on a surface or in a graphical interface, the system comprising a meta-classification module which jointly analyzes kinematic and spatial characteristics of an arbitrary gesture undergoing execution, wherein the gesture comprises characteristics of at least acceleration and curvature, and classifies this gesture based on both characteristics into a class belonging to a group of classes comprising:
class C 1 comprising gestures corresponding to prolonged regular movement, of low speed, low acceleration, prolonged duration, and indeterminate shape;
class C 2 comprising gestures corresponding to rectilinear fast movement, of high acceleration, brief duration, and quasi-rectilinear shape;
one of class C 3 or class C 4 , wherein:
class C 3 comprises gestures corresponding to rotational movement to the left, more or less curved at the outset with a low or high acceleration, transforming into a fairly fast rotation to the left or to the right, and
class C 4 comprises gestures corresponding to rotational movement to the right, more or less curved at the outset with a low or high acceleration, transforming into a fairly fast rotation to the left or to the right; and
class C 5 comprising gestures with a high acceleration at the outset, and at least one curvature or at least one angle;
wherein:
class C 1 corresponds to a class of direct manipulation synchronous gestures,
class C 2 corresponds to a class of asynchronous gestures,
class C 3 and class C 4 wherein each corresponds to a class of dynamic gestures, and
class C 5 corresponds to a class of symbolic gestures.
2. A method of classifying gestures executed by a user on a surface or in a graphical interface, the method comprising a meta-classification step comprising the analysis of kinematic and spatial characteristics of an arbitrary gesture undergoing execution, wherein the gesture comprises characteristics of at least acceleration and curvature, and the classification of this gesture based on both characteristics into a class belonging to a group of classes comprising:
class C 1 comprising gestures corresponding to prolonged regular movement, of low speed, low acceleration, prolonged duration, and indeterminate shape;
class C 2 comprising gestures corresponding to rectilinear fast movement, of high acceleration, brief duration, and quasi-rectilinear shape;
one of class C 3 or class C 4 , wherein:
class C 3 comprises gestures corresponding to rotational movement to the left, more or less curved at the outset with a low or high acceleration, transforming into a fairly fast rotation to the left or to the right, and
class C 4 comprises gestures corresponding to rotational movement to the right, more or less curved at the outset with a low or high acceleration, transforming into a fairly fast rotation to the left or to the right; and
class C 5 comprising gestures with a high acceleration at the outset, and at least one curvature or at least one angle;
wherein:
class C 1 corresponds to a class of direct manipulation synchronous gestures,
class C 2 corresponds to a class of asynchronous gestures,
class C 3 and class C 4 wherein each corresponds to a class of dynamic gestures, and
class C 5 corresponds to a class of symbolic gestures.
3. A non-transitory computer program product, comprising a computer usable medium having a computer readable program code embodied therein, said computer readable program code adapted to be executed to implement the method of classifying gestures, according to claim 2 .
4. A terminal comprising the system for classifying gestures according to claim 1 .