[Rust OpenCV] 1.01 OpenCV 4로 배우는 컴퓨터 비전과 머신 러닝을 Rust로 Re-write

	/**
	* original source : https://github.com/sunkyoo/opencv4cvml/blob/master/ch03/BasicOp/main.cpp
	* Cargo.toml
	*. opencv = "0.82.0"
	*/
	use opencv::core::*;
	/* Point : https://docs.rs/opencv/0.83.0/opencv/core/struct.Point_.html
	*/
	fn point_op() {
	let mut pt1 = Point::default();
	pt1.x = 5;
	pt1.y = 10;
	let pt2 = Point::new(10, 30);
	let pt3 = pt1 + pt2;
	let pt4 = pt1 * 2;
	let d1 = pt1.dot(pt2); // dot product. 5*10 + 10*30
	let b1 = pt1 == pt2; // FALSE
	println!("{},{}", pt1.x, pt1.y);
	println!("{},{}", pt2.x, pt2.y);
	println!("{},{}", pt3.x, pt3.y);
	println!("{},{}", pt4.x, pt4.y);
	println!("{}", d1);
	println!("{}", b1);
	}
	/* Size : https://docs.rs/opencv/0.83.0/opencv/core/struct.Size_.html
	*/
	fn size_op() {
	let mut sz1 = Size::default();
	let sz2 = Size::new(10, 20);
	sz1.width = 5;
	sz1.height = 10;
	let sz3 = sz1 + sz2;
	let sz4 = sz1 * 2;
	let area1 = sz4.area();
	println!("{} {}", sz1.width, sz1.height);
	println!("{} {}", sz2.width, sz2.height);
	println!("{} {}", sz3.width, sz3.height);
	println!("{} {}", sz4.width, sz4.height);
	println!("sz4.area {}", area1);
	}
	/* Rect : https://docs.rs/opencv/0.83.0/opencv/core/struct.Rect_.html
	*/
	fn rect_op() {
	let rc1 = Rect::default();
	let rc2 = Rect::new(10, 10, 60, 40);
	let rc3 = rc1 + Size::new(50, 40); // 50x40 from (0,0)
	let rc4 = rc2 + Point::new(10, 10); // 60x40 from 20,20
	let rc5 = rc3 & rc4; // 30x20 from 20,20
	let rc6 = rc3 | rc4; // 80x60 from 0,0
	println!("{}x{} from {},{}", rc1.width, rc1.height, rc1.x, rc1.y);
	println!("{}x{} from {},{}", rc2.width, rc2.height, rc2.x, rc2.y);
	println!("{}x{} from {},{}", rc3.width, rc3.height, rc3.x, rc3.y);
	println!("{}x{} from {},{}", rc4.width, rc4.height, rc4.x, rc4.y);
	println!("{}x{} from {},{}", rc5.width, rc5.height, rc5.x, rc5.y);
	println!("{}x{} from {},{}", rc6.width, rc6.height, rc6.x, rc6.y);
	}
	/* RotectedRect : https://docs.rs/opencv/0.83.0/opencv/core/struct.RotatedRect.html
	*/
	fn rotated_rect_op() {
	let rr1 = RotatedRect::new(Point2f::new(40.0, 30.0), Size2f::new(40.0, 20.0), 30.0).unwrap();
	let mut pts = [Point2f::default(); 4];
	let r = rr1.points(&mut pts);
	/*
	* 17.679493, 28.660255
	* 27.679493, 11.339746
	* 62.320507, 31.339745
	* 52.320507, 48.660255
	*/
	for point in &pts {
	println!("{}, {}", point.x, point.y);
	}
	}
	fn main() {
	point_op();
	size_op();
	rect_op();
	rotated_rect_op();
	}

view raw BasicOp.rs hosted with ❤ by GitHub

Original Code opencv4cvml/ch03/BasicOp/main.cpp

 

코딩을 배우는 가장 좋은 방법은 베끼는거죠!

opencv::core::{Point, Size, Rect, RotatedRect} 샘플 코드를 rust 로 작성해봤습니다.

RotatedRect.points 를 쓰는데 자꾸 에러가 발생해서 코드를 아래와 같이 바꾸었더니 정상 동작하였습니다.

use opencv::core::*; 

아직 Rust 내공이 미천하여 왜 그런지는 모르겠습니다만, 하다보면 알게 되겠지요!

#RustOpenCV