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#include <opencv2/opencv.hpp>#include <iostream>
using namespace cv;using namespace std;
int getAreaOfRegion(cv::Mat image, int value){ int area = 0; for (size_t i = 0; i < image.rows; i++) { uchar *p = image.ptr<uchar>(i); for (size_t j = 0; j < image.cols; j++) { int cur_value = p[j]; if(cur_value == value) { area++; } }  }  return area;}



int main(){ cv::Mat image = cv::Mat::zeros(cv::Size(1000,1000),CV_8UC1); int fill_value = 255;
 cv::Point rook_points[1][4]; rook_points[0][0] = cv::Point(132,131); rook_points[0][1] = cv::Point(62,266); rook_points[0][2] = cv::Point(179,373); rook_points[0][3] = cv::Point(422,265); const cv::Point* ppt[1] = {rook_points[0]}; int npt[] = {4}; cv::Mat out_im1 = image.clone(); cv::fillPoly(out_im1,ppt, npt, 1, fill_value); cv::imwrite("out_im1.jpg",out_im1);
 cv::Point rook_points2[1][4]; rook_points2[0][0] = cv::Point(326,57); rook_points2[0][1] = cv::Point(218,252); rook_points2[0][2] = cv::Point(335,479); rook_points2[0][3] = cv::Point(572,296); const cv::Point* ppt2[1] = {rook_points2[0]}; cv::Mat out_im2 = image.clone(); cv::fillPoly(out_im2,ppt2, npt, 1, fill_value); cv::imwrite("out_im2.jpg",out_im2);


 cv::Mat combine_im; cv::Mat inter_im; cv::bitwise_or(out_im1,out_im2,combine_im); cv::bitwise_and(out_im1,out_im2,inter_im); cv::imwrite("combine_im.jpg",combine_im); cv::imwrite("inter_im.jpg",inter_im);
 int combine_area = getAreaOfRegion(combine_im, fill_value); int inter_area = getAreaOfRegion(inter_im, fill_value); float score = (inter_area)*1.0/combine_area;
 std::cout<<"iou=="<<score<<std::endl;

 return 0;}

# 声明要求的 cmake 最低版本cmake_minimum_required( VERSION 2.8 ) # 声明一个 cmake 工程project( vehicle_calibrate ) # 设置编译模式set( CMAKE_BUILD_TYPE "Debug" )set(CMAKE_CXX_FLAGS "-std=c++11") find_package(OpenCV 4 REQUIRED)
include_directories(${PROJECT_SOURCE_DIR}) # 添加一个可执行程序# 语法：add_executable( 程序名 源代码文件 ）# add_executable( test test.cpp)add_executable(test test.cpp) # 将库文件链接到可执行程序上# target_link_libraries( test ${OpenCV_LIBS} )target_link_libraries( test ${OpenCV_LIBS} )

./testiou==0.148643

fillPoly(img,ppt,npt,1,Scalar(255,255,255),lineType);