Function main

examples/video_histogram.rs:17–36

note: to be able to run this example you need the rustml dataset package see https://github.com/daniel-e/rustml#datasets The result of this example can be plotted with Octave as follows: start Octave and type: > load("/tmp/day_and_night.txt"); > hist(day_and_night, 256);

()

// > load("/tmp/day_and_night.txt");
// > hist(day_and_night, 256);
fn main() {
    let video = Video::from_file(
        &consts::path_for("videos/day_and_night_in_gray.avi").unwrap()).unwrap();
    let mask = GrayImage::from_file(
        &consts::path_for("videos/day_and_night_in_gray_mask_sky.png").unwrap()).unwrap();

    let mut f = File::create("/tmp/day_and_night.txt").unwrap();

    for (idx, img) in video.gray_frame_iter().enumerate() {

        // write status to stderr for the impatient
        if idx % 1000 == 0 {
            writeln!(&mut std::io::stderr(), "{} frames", idx).unwrap();
        }

        writeln!(f, "{}",
            img.mask_iter(&mask).map(|x| x as u32).collect::<Vec<u32>>().mean()
        ).unwrap();
    }
}