opencv 0.53.2

Rust bindings for OpenCV
Documentation 
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#![cfg(all(ocvrs_has_module_objdetect, not(ocvrs_opencv_branch_32)))]

use std::path::Path;

use opencv::{
	imgcodecs,
	objdetect,
	prelude::*,
	Result,
	types::VectorOfPoint,
};

#[test]
fn qr_code() -> Result<()> {
	let qr_path = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/qr.png");

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

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

	#[cfg(ocvrs_opencv_branch_34)] {
		let src = imgcodecs::imread(qr_path.to_str().unwrap(), imgcodecs::IMREAD_COLOR)?;
		let mut pts = VectorOfPoint::new();
		let res = objdetect::detect_qr_code(&src, &mut pts, 0.2, 0.1)?;
		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)?;
		assert!(res);
		assert_eq!(out, "https://crates.io/crates/opencv");
		assert!(!straight.empty()?);
	}
	Ok(())
}