Function libvips::ops::mask_butterworth

pub fn mask_butterworth(
    width: i32, 
    height: i32, 
    order: f64, 
    frequency_cutoff: f64, 
    amplitude_cutoff: f64
) -> Result<VipsImage>

VipsMaskButterworth (mask_butterworth), make a butterworth filter width: i32 -> Image width in pixels min: 1, max: 10000000, default: 1 height: i32 -> Image height in pixels min: 1, max: 10000000, default: 1 order: f64 -> Filter order min: 1, max: 1000000, default: 1 frequency_cutoff: f64 -> Frequency cutoff min: 0, max: 1000000, default: 0.5 amplitude_cutoff: f64 -> Amplitude cutoff min: 0, max: 1, default: 0.5 returns VipsImage - Output image