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Value noise
Value noise is a type of noise commonly used as a procedural texture primitive in computer graphics. It is conceptually different from, and often confused with gradient noise, examples of which are Perlin noise and Simplex noise. This method consists of the creation of a lattice of points which are assigned random values. The noise function then returns the interpolated number based on the values of the surrounding lattice points.
For many applications, multiple octaves of this noise can be generated and then summed together, just as can be done with Perlin noise and Simplex noise, in order to create a form of fractal noise.
==External links==
* (An explanation and implementation of Value Noise (mislabeled as Perlin noise) ), freespace.virgin.net
* (Lesson explaining in a very simple way how Value Noise works (with examples in C++) )
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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