Function superpixel::do_segmentation_with_num_superpixels

pub fn do_segmentation_with_num_superpixels(
    img: &RgbImage, 
    lab_vec: &mut Vec<LABColor>, 
    width: u32, 
    height: u32, 
    klabels: &mut Vec<i32>, 
    num_superpixels: u32, 
    compactness: f64, 
    iterations: u32
) -> u32