Abstract: Processing method for transforming a first surface into a second surface, according to which: a/ in a (k+1)th iteration step, for each couple comprising a first elementary surface and a second elementary surface transformed from the first elementary surface in iteration k, the projection of the second elementary surface on the plane of the first elementary surface is determined and a matrix (A) is defined for said couple, where (A)=pkt,(pt)?1 and pt=[pn+1?pi]i=1 to n, pkt,=[p?n+1,k?p?i,k]i=1 to n; b/ the second elementary surfaces obtained for the (k+1)th iteration are determined as those minimizing a function including at least the term Eshape—k+1=(B).

Abstract: Metabrushes for digital painting (such as 3D painting) are provided. Metabrushes may be defined by 3D paint strokes embedded on an elementary piece of geometry. Paint strokes are replicated in 3D over a user's painting gesture, allowing a fast embedding of numerous strokes using only a few user input gestures. Hierarchical metabrushes are further provided for providing faster and more diverse creation of digital paintings.

Abstract: Processing method for transforming a first surface into a second surface, according to which: a/ in a (k+1)th iteration step, for each couple comprising a first elementary surface and a second elementary surface transformed from the first elementary surface in iteration k, the projection of the second elementary surface on the plane of the first elementary surface is determined and a matrix (A) is defined for said couple, where (A)=Pkt,(Pt)?1 and Pt=[pn+1?pi]i=1 to n, Pkt,=[p?n+1,k?p?i,k]i=1 to n; b/ the second elementary surfaces obtained for the (k+1)th iteration are determined as those minimizing a function including at least the term Eshape—k+1=(B).

Abstract: Metabrushes for digital painting (such as 3D painting) are provided. Metabrushes may be defined by 3D paint strokes embedded on an elementary piece of geometry. Paint strokes are replicated in 3D over a user's painting gesture, allowing a fast embedding of numerous strokes using only a few user input gestures. Hierarchical metabrushes are further provided for providing faster and more diverse creation of digital paintings.

Abstract: The invention relates to a method of generating at least one synthesized image of at least a portion of a head of hair in movement, the method comprising the steps consisting in calculating a shape of at least one director hair by applying to the at least one director hair at least one mechanical model of an inextensible rod having inertia and stiffnesses in twisting and in bending, and in generating at least one virtual image of the at least one portion of the head of hair from the shape of the director hair.

Abstract: An input peripheral comprises a grip linked to a base. The grip is mobile in a chosen number of degrees of freedom with respect to the base. The peripheral also includes sensors designed to deliver a signal characteristic of a displacement of the grip with respect to the base. The peripheral furthermore comprises at least one force sensor linked to the grip in a manner that is substantially tied in terms of displacement to the periphery of the latter, in such a way that the grip and the force sensor may be invoked simultaneously by a user's hand.

Abstract: The invention relates to a method of generating at least one synthesized image of at least a portion of a head of hair in movement, the method comprising the steps consisting in calculating a shape of at least one director hair by applying to the at least one director hair at least one mechanical model of an inextensible rod having inertia and stiffnesses in twisting and in bending, and in generating at least one virtual image of the at least one portion of the head of hair from the shape of the director hair.