meaning of bezier

1. Bezier curve A type of curve defined by mathematical formulae, used in computer graphics. A curve with coordinates Pu, where u varies from 0 at one end of the curve to 1 at the other, is defined by a set of n+1 "control points" Xi, Yi, Zi for i = 0 to n. Pu = Sum i=0. . n [Xi, Yi, Zi * Bi, n, u] Bi, n, u = Cn, i * u^i * 1-u^n-i Cn, i = n!/i!/n-i! A Bezier curve or surface is defined by its control points, which makes it invariant under any affine mapping translation, rotation, parallel projection, and thus even under a change in the axis system. You need only to transform the control points and then compute the new curve. The control polygon defined by the points is itself affine invariant. Bezier curves also have the variation-diminishing property. This makes them easier to split compared to other types of curve such as Hermite or B-spline. Other important properties are multiple values, global and local control, versatility, and order of continuity. [What do these properties mean?]

Related Words

bezier curve | bezier surface |

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