openCV visual studio 2019配置

下载opencv，解压，配置环境变量，添加opencv安装路径\build\x64\vc15\bin （vc14 = Visual Studio 2015，vc15 = Visual Studio 2017及以上）。
新建项目

配置管理器选择x64

解决方案资源管理器，右键项目，属性，

VC++目录—VC++目录—包含目录：
  ...\opencv\build\include

       ...\opencv\build\include\opencv
  ...\opencv\build\include\opencv2
库目录 配置：
  ...\opencv\build\x64\vc15\lib
链接器 配置：
  链接器–>输入–>附加依赖项
  opencv_world430d.lib

测试代码（官方Houph直线检测的代码，做了一点修改）

#include 
#include 
#include 
#include "opencv2/imgproc.hpp"
#include 
#include 

int main(void)
{
	IplImage* src = cvLoadImage("D:\\11.jpg", 0);
	if (src)
	{
		IplImage* dst = cvCreateImage(cvGetSize(src), 8, 1);
		IplImage* color_dst = cvCreateImage(cvGetSize(src), 8, 3);
		CvMemStorage* storage = cvCreateMemStorage();
		CvSeq* lines = 0;
		int i;
		cvCanny(src, dst, 50, 200, 3);

		cvCvtColor(dst, color_dst, CV_GRAY2BGR);
#if 0
		lines = cvHoughLines2(dst, storage, CV_HOUGH_STANDARD, 1, CV_PI / 180, 150, 0, 0);

		for (i = 0; i < lines->total; i++)
		{
			float* line = (float*)cvGetSeqElem(lines, i);
			float rho = line[0];
			float theta = line[1];
			CvPoint pt1, pt2;
			double a = cos(theta);
			double b = sin(theta);
			if (fabs(a) < 0.001)
			{
				pt1.x = pt2.x = cvRound(rho);
				pt1.y = 0;
				pt2.y = color_dst->height;
			}
			else if (fabs(b) < 0.001)
			{
				pt1.y = pt2.y = cvRound(rho);
				pt1.x = 0;
				pt2.x = color_dst->width;
			}
			else
			{
				pt1.x = 0;
				pt1.y = cvRound(rho / b);
				pt2.x = cvRound(rho / a);
				pt2.y = 0;
			}

			cvLine(color_dst, pt1, pt2, cvScalar(255, 0, 0), 1, 8);
		}
#else
		std::vector X;
		std::vector Y;
		lines = cvHoughLines2(dst, storage, CV_HOUGH_PROBABILISTIC, 1, CV_PI / 180, 80, 30, 5);
		for (i = 0; i < lines->total; i++)
		{
			CvPoint* line = (CvPoint*)cvGetSeqElem(lines, i);
			cvLine(color_dst, line[0], line[1], cvScalar(255, 0, 0), 1, CV_AA);
			cvCircle(color_dst, line[0], 3, cvScalar(0, 0, 255), -1);
			cvCircle(color_dst, line[1], 3, cvScalar(0, 0, 255), -1);
			X.push_back(line->x);
			Y.push_back(line->y);
		}
#endif
		for (int i = 0; i < X.size(); i++) {
			std::cout << X[i] << "," << Y[i] << std::endl;
		}
		cvNamedWindow("Source");
		cvShowImage("Source", src);

		cvNamedWindow("Hough");
		cvShowImage("Hough", color_dst);

		cvWaitKey(0);

		cvReleaseImage(&src);
		cvReleaseImage(&dst);
		cvReleaseImage(&color_dst);
		cvReleaseMemStorage(&storage);

		cvDestroyAllWindows();

		return 1;
	}
}