A one-dimensional transform which makes use of the Haar functions.
Haar Transform
See also
H-Transform, Haar FunctionExplore with Wolfram|Alpha
References
Haar, A. "Zur Theorie der orthogonalen Funktionensysteme." Math. Ann. 69, 331-371, 1910.Referenced on Wolfram|Alpha
Haar TransformCite this as:
Weisstein, Eric W. "Haar Transform." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HaarTransform.html