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What is Anisotropic Filtering (AF)?
Published  07/3/2011 | Computer Encyclopedia Page 4 | Unrated
What is Anisotropic Filtering (AF)?
The most advanced form of texture filtering (explained later), it works in conjunction with bilinear and trilinear filtering to correct artefacts from a larger perspective. Since the user’s view reveals object surfaces in different shapes—for example, a rectangular ceiling appears as a trapezoid—texture filtering has to ensure an even transition of the texture laid on this shape, and not the original shape of the object. Anisotropic Filtering ensures that bilinear and trilinear filtering achieves the correct transition effects by changing the sampling pattern based on the user’s perspective. AF can also be denoted by the number of samples taken, like AF 8X.
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