Function column_running_sum

pub fn column_running_sum(
    image: &GrayImage,
    column: u32,
    buffer: &mut [u32],
    padding: u32,
)

Computes the running sum of one column of image, padded at the top and bottom. The padding is by continuity. Takes a reference to buffer so that this can be reused for all columns in an image.

Panics

• If buffer.len() < 2 * padding + image.height().
• If column >= image.width().
• If image.height() == 0.

Examples

use imageproc::integral_image::column_running_sum;

let image = gray_image!(
    1, 4;
    2, 5;
    3, 6);

// Buffer has length two greater than image height, hence padding of 1
let mut buffer = [0; 5];
column_running_sum(&image, 0, &mut buffer, 1);

// The image is padded by continuity on top and bottom
assert_eq!(buffer, [1, 2, 4, 7, 10]);