#qr #scanner

quircs

QR code detection and scanning. Pure Rust.

4 releases

0.10.1 Mar 9, 2023
0.10.0 Jun 15, 2020
0.9.1 Jun 11, 2020
0.9.0 Jun 7, 2020

#72 in Images

Download history 1507/week @ 2023-01-27 581/week @ 2023-02-03 556/week @ 2023-02-10 419/week @ 2023-02-17 589/week @ 2023-02-24 545/week @ 2023-03-03 305/week @ 2023-03-10 468/week @ 2023-03-17 485/week @ 2023-03-24 711/week @ 2023-03-31 460/week @ 2023-04-07 744/week @ 2023-04-14 583/week @ 2023-04-21 840/week @ 2023-04-28 742/week @ 2023-05-05 514/week @ 2023-05-12

2,800 downloads per month
Used in 2 crates

MIT license

81KB
2.5K SLoC

quircs

QR Scanner in Rust.


Ported from quirc.

Example

// open the image from disk
let img = image::open("tests/data/Hello+World.png").unwrap();

// convert to gray scale
let img_gray = img.into_luma();

// create a decoder
let mut decoder = quircs::Quirc::default();

// identify all qr codes
let codes = decoder.identify(img_gray.width() as usize, img_gray.height() as usize, &img_gray);

for code in codes {
    let code = code.expect("failed to extract qr code");
    let decoded = code.decode().expect("failed to decode qr code");
    println!("qrcode: {}", std::str::from_utf8(&decoded.payload).unwrap());
}

CLI Example

$ cargo build --release --example qrtest
$ qrtest <path-to-image>

Dependencies

~1–1.4MB
~32K SLoC