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HaarWavelet

oxiphysics_core::wavelets

Struct HaarWavelet 

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pub struct HaarWavelet;
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Haar wavelet transform (single level and multi-level decomposition).

The Haar wavelet is the simplest orthogonal wavelet, based on piecewise constant functions.

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impl HaarWavelet

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pub fn forward(signal: &[f64]) -> (Vec<f64>, Vec<f64>)

Compute one level of the forward Haar transform.

Returns (approx, detail) where each output has length signal.len() / 2. The input length should be even; if odd the last sample is dropped.

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pub fn inverse(approx: &[f64], detail: &[f64]) -> Vec<f64>

Reconstruct a signal from its Haar approximation and detail coefficients.

approx and detail must have the same length.

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pub fn decompose_level(signal: &[f64], levels: usize) -> Vec<Vec<f64>>

Decompose a signal into multiple levels.

Returns a vector of length levels + 1 where index 0 is the final approximation and indices 1..=levels are detail coefficients at each level (finest first).

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