绘制线段

bool opencvTool::drawLines(std::string image_p, std::vector<cv::Point> points)
{
	cv::Mat ima = cv::imread(image_p.c_str()); // 读取图像，替换为你的图片路径  
	cv::Scalar red = cv::Scalar(0, 0, 255);  // Red color  
	int thickness = 2;

	// 遍历点列表，绘制线段
	for (size_t i = 0; i < points.size() - 1; i++)
	{
		cv::Point2f start = points[i];
		cv::Point2f end = points[i + 1];

		cv::line(ima, start, end, red, thickness);
	}

	cv::imwrite(image_p.c_str(), ima);

	return true;
}

bool opencvTool::drawLines(cv::Mat& image, std::vector<cv::Point> points, int lineWidth)
{
	cv::Scalar red = cv::Scalar(0, 0, 255);  // Red color  

	// 遍历点列表，绘制线段
	for (size_t i = 0; i < points.size() - 1; i++)
	{
		cv::Point2f start = points[i];
		cv::Point2f end = points[i + 1];
		cv::line(image, start, end, red, lineWidth);
	}
	return true;
}