opencv-four arithmetic operations in images (image mixing)

principle

Image blending is actually an operation between pixels,
so it is required

Two images are required to be the same size

API

add(src1, src2, dst=None, mask=None, dtype=None)        // +
multiply(src1, src2, dst=None, scale=None, dtype=None)	// -
subtract(src1, src2, dst=None, mask=None, dtype=None)	// x
divide(src1, src2, dst=None, scale=None, dtype=None)	// /

Code

#include <opencv2/opencv.hpp>
#include <iostream>

using namespace std;
using namespace cv;

int main(int argc, char** argv) {
    
    
	Mat src1, src2, dst;
	src1 = imread("C:/Users/86176/Pictures/pics/baboon.tiff");
	src2 = imread("C:/Users/86176/Pictures/pics/peppers(1).tiff");
	if (!src1.data) {
    
    
		cout << "could not load image which named boy.png..." << endl;
		return -1;
	}
	if (!src2.data) {
    
    
		cout << "could not load image named girl.png..." << endl;
		return -1;
	}

	double alpha = 0.5;
	if (src1.rows == src2.rows && src1.cols == src2.cols && src1.type() == src2.type()) {
    
    
		
		add(src1, src2, dst, Mat());
		//multiply(src1, src2, dst, Mat());
		//subtract(src1, src2, dst, 1.0);
		//divide(src1, src2, dst, 1.0);

		imshow("src1", src1);
		imshow("src2", src2);
		imshow("dst", dst);
	}
	else {
    
    
		printf("could not blend images , the size of images is not same...\n");
		return -1;
	}

	waitKey(0);
	return 0;
}

effect

src1

src2

plus

Less

Multiply

except