Concepts inHarmonic skeleton for realistic character animation
Skeleton
The skeleton (From Greek ¿¿¿¿¿¿¿¿, skeletos = "dried-body", "mummy") is the body part that forms the supporting structure of an organism. There are two different skeletal types: the exoskeleton, which is the stable outer shell of an organism, and the endoskeleton, which forms the support structure inside the body. In a figurative sense, skeleton can refer to technology that supports a structure such as a building.
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Harmonic
A harmonic of a wave is a component frequency of the signal that is an integer multiple of the fundamental frequency, i.e. if the fundamental frequency is f, the harmonics have frequencies 2f, 3f, 4f, . . . etc. The harmonics have the property that they are all periodic at the fundamental frequency, therefore the sum of harmonics is also periodic at that frequency.
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Character animation
Character animation is a specialized area of the animation process concerning the animation of one or more characters featured in an animated work. It is usually as one aspect of a larger production and often made to enhance voice acting. The primary role of a Character Animator is to be the "actor" behind the performance, especially during shots with no dialog.
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Bone
Bones are rigid organs that constitute part of the endoskeleton of vertebrates. They support and protect the various organs of the body, produce red and white blood cells and store minerals. Bone tissue is a type of dense connective tissue. Bones come in a variety of shapes and have a complex internal and external structure, are lightweight yet strong and hard, and serve multiple functions.
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Joint
A joint is the location at which two or more bones make contact. They are constructed to allow movement (except for skull bones) and provide mechanical support, and are classified structurally and functionally.
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Harmonic function
In mathematics, mathematical physics and the theory of stochastic processes, a harmonic function is a twice continuously differentiable function f : U ¿ R (where U is an open subset of R) which satisfies Laplace's equation, i.e. everywhere on U. This is usually written as or
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Surface
In mathematics, specifically in topology, a surface is a two-dimensional topological manifold. The most familiar examples are those that arise as the boundaries of solid objects in ordinary three-dimensional Euclidean space R ¿ for example, the surface of a ball. On the other hand, there are surfaces, such as the Klein bottle, that cannot be embedded in three-dimensional Euclidean space without introducing singularities or self-intersections.
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