In the mathematical subfield numerical analysis, tricubic interpolation is a method for obtaining values at arbitrary points in 3D space of a function defined on a regular grid. The approach involves approximating the function locally by an expression of the form f ( x , y , z ) = ∑ i = 0 3 ∑ j = 0 3 ∑ k = 0 3 a i j k x i y j z k .
In the mathematical subfield numerical analysis, tricubic interpolation is a method for obtaining values at arbitrary points in 3D space of a function defined on a regular grid. The approach involves approximating the function locally by an expression of the form f ( x , y , z ) = ∑ i = 0 3 ∑ j = 0 3 ∑ k = 0 3 a i j k x i y j z k .
Source: Wikipedia "Tricubic interpolation" · CC BY-SA 4.0
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