fn auto_stop_masks(grid: &Grid, k: &[f64]) -> (Vec<bool>, Vec<bool>)Expand description
The two k-space bands ndi_auto.m compares (FANSI create_freqmasks_auto.m): a radial
shell of high frequencies, split by |D| into a band close to the cone (0.15 < |D| <= 0.2)
and one further off it (0.225 < |D| <= 0.275). k is the kernel in FFT order.