opencv 0.14.0

Rust bindings for OpenCV
Documentation 
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use std::path::PathBuf;

use opencv::{
    core::Mat,
    imgcodecs,
    objdetect,
    types::VectorOfPoint,
};

#[test]
fn qr_code() {
    let qr_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("tests/qr.png");

    {
        let mut detector = objdetect::QRCodeDetector::new().unwrap();
        let src = imgcodecs::imread(qr_path.to_str().unwrap(), imgcodecs::IMREAD_COLOR).unwrap();
        let mut pts = VectorOfPoint::new();
        let mut straight = Mat::default();
        let res = detector.detect_and_decode(&src, &mut pts, &mut straight).unwrap();
        assert_eq!(res, "https://crates.io/crates/opencv");
        assert_eq!(4, pts.len());
        assert!(!straight.empty().unwrap());
    }

    {
        let mut detector = objdetect::QRCodeDetector::new().unwrap();
        let src = imgcodecs::imread(qr_path.to_str().unwrap(), imgcodecs::IMREAD_COLOR).unwrap();
        let mut pts = VectorOfPoint::new();
        let res = detector.detect(&src, &mut pts).unwrap();
        assert!(res);
        assert_eq!(4, pts.len());
        let mut straight = Mat::default();
        let res = detector.decode(&src, &pts, &mut straight).unwrap();
        assert_eq!(res, "https://crates.io/crates/opencv");
        assert!(!straight.empty().unwrap());
    }

    {
        let src = imgcodecs::imread(qr_path.to_str().unwrap(), imgcodecs::IMREAD_COLOR).unwrap();
        let mut pts = VectorOfPoint::new();
        let res = objdetect::detect_qr_code(&src, &mut pts, 0.2, 0.1).unwrap();
        assert!(res);
        assert_eq!(4, pts.len());
        let mut out = String::new();
        let mut straight = Mat::default();
        let res = objdetect::decode_qr_code(&src, &pts, &mut out, &mut straight).unwrap();
        assert!(res);
        assert_eq!(out, "https://crates.io/crates/opencv");
        assert!(!straight.empty().unwrap());
    }
}