Please help me, imgproc::match_template How to use

[zoain-it]

I don't know how to use this library.

use opencv::{core, highgui, imgcodecs, imgproc, prelude::*};

fn main() {
    let s = imgcodecs::imread("~/Downloads/s.jpg", imgcodecs::IMREAD_COLOR).unwrap();
    let t = imgcodecs::imread("~/Downloads/t.jpg", imgcodecs::IMREAD_COLOR).unwrap();
    let mask = imgcodecs::imread("", imgcodecs::IMREAD_GRAYSCALE).unwrap();
    let zero = Mat::zeros(
        s.rows() - t.rows() + 1,
        s.cols() - t.cols() + 1,
        core::CV_32FC1,
    )
    .unwrap();
    let mut result = zero.to_mat().unwrap();
    imgproc::match_template(&s, &t, &result, imgproc::TM_CCORR_NORMED, &mask);
}

The version of opencv is 0.36

As shown above.

How do I modify it to make it work?

[twistedfall]

You need to pass mutable reference because it's an output argument:

&mut result

[zoain-it]

Thanks, I got it.