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SparseKernel

qsm_core::inversion::msmv

Enum SparseKernel 

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enum SparseKernel {
    Direct(Vec<([isize; 3], f64)>),
    Fft(Vec<f64>),
}
Expand description

SMV(x, matrix_size, voxel_size, r) for a small r: MEDI’s rendered sphere applied as a circular convolution with real(fftn(...))’s kernel, i.e. the sphere symmetrised ((S(o) + S(−o))/2), which is the sphere itself on even grids. Large spheres go through the FFT.

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Direct(Vec<([isize; 3], f64)>)

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Fft(Vec<f64>)

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impl SparseKernel

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fn new(grid: &Grid, radius: f64) -> Self

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fn apply(&self, x: &[f64], grid: &Grid) -> Vec<f64>

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