c_cpp 更改OpenCV的窗口显示的底色

Posted 2021-05-14

#include<opencv2/core/core.hpp>
#include<opencv2/highgui/highgui.hpp>
using namespace cv;
void translateTransform(cv::Mat const& src, cv::Mat& dst, int dx, int dy)
{
	CV_Assert(src.depth() == CV_8U);
	const int rows = src.rows;
	const int cols = src.cols;
	dst = Mat::Mat(rows, cols, src.type(), Scalar(0, 0, 0));
	for (int i = 0; i < rows; i++)
	{
		p = dst.ptr<Vec3b>(i);
		for (int j = 0; j < cols; j++)
		{
			int x = j - dx;
			int y = i - dy;
			if (x >= 0 && y >= 0 && x < cols && y < rows)
				p[j] = src.ptr<Vec3b>(y)[x];
		}
	}
}
int main(int argc, char** argv[])
{
	Mat srcimage, dst;
	srcimage = imread("1.jpg");
	namedWindow("src_window");
	imshow("src_window", srcimage);
	translateTransform(srcimage, dst, 50, 50);
	namedWindow("dst_window");
	imshow("dst_window", dst);
	waitKey(0);
}