## The AIM@SHAPE Glossary

### Alphabetical list of terms

- behavioural animation
- Methods for animating characters by specifying their behaviour. For Virtual Humans behavioural animation is expected to exhibit an autonomous believable anthropomorphic behaviour, where Virtual Humans perform specific actions under pre-specified conditions.
- blending
- Surface connecting smoothly two 3D curves, with prescribed tangent planes along these curves.
- blending graph
- It is used for skeleton-based (or structural) implicit modelling. The vertices of this graph are the skeleton primitives. Two primitives are connected by an edge if they can blend their field contributions. The field at a space point P is then computed as the sum of the field from the primitive that contributes the most at P and the contributions from all its neighbouring primitives in the graph. The use of such a graph prevents unwanted blending.
- body animation
- Methods for animating the body of a Virtual Human. Body animation is usually performed with Skeleton Driven Deformations.
- body pose
- See Body posture.
- body posture
- Specification of joint values describing a virtual human body posture. A body posture can be defined using forward/inverse kinematics, forward/inverse dynamics or even motion capture.
- boundary conditions
- In a physical model simulation, they describe the physical conditions at the boundaries of the simulation region (e.g. force distribution, displacement, temperature, flows).
- boundary representation (brep)
- Geometric representation of objects defined in terms of the faces, edges and vertices which make up its boundary. The boundary of a three dimensional solid is a two dimensional surface, that is usually represented as a collection of faces. Usually, the segmentation of the surface into faces is performed so that the shape of each face has a compact mathematical representation, e.g. that the face lies on a single geometric surface. Faces, again, are often represented in terms of their boundary being a one-dimensional curve. Hence boundary models may be viewed as a hierarchy of models.
- bounding box
- A parallelepiped that completely contains the object. It is usually considered the minimal, i.e. the parallelepiped tangent to the object.
- brand identity
- The set of features, attributes, benefits, performance, quality, service support, and the values that a brand possesses. The brand can be viewed as a product, a personality, a set of values, and a position it occupies in people`s (customers) minds. Brand identity is everything the company wants the brand to be seen as.
- brep
- See Boundary Representation.
- BRep
- See Boundary Representation.
- b-spline curve/surface
- General form of piecewise rational or polynomial parametric curve/surface, which is represented by control points, basis functions, and possibly, weighs.
- butterfly scheme
- An interpolating subdivision scheme for triangle meshes.

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