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張正友相機(jī)標(biāo)定。利用opencv實(shí)現(xiàn)
單片機(jī)源程序如下:
- #include "opencv2/core/core.hpp"
- #include "opencv2/imgproc/imgproc.hpp"
- #include "opencv2/calib3d/calib3d.hpp"
- #include "opencv2/highgui/highgui.hpp"
- #include <iostream>
- #include <fstream>
- #include <iomanip>
- using namespace cv;
- using namespace std;
- void main()
- {
- //ifstream fin("calibdata.txt"); /* 標(biāo)定所用圖像文件的路徑 */
- //ofstream fout("caliberation_result.txt"); /* 保存標(biāo)定結(jié)果的文件 */
- // //讀取每一幅圖像,從中提取出角點(diǎn),然后對角點(diǎn)進(jìn)行亞像素精確化
- //cout << "開始提取角點(diǎn)………………";
- //int image_count = 0; /* 圖像數(shù)量 */
- //Size image_size; /* 圖像的尺寸 */
- //Size board_size = Size(4, 6); /* 標(biāo)定板上每行、列的角點(diǎn)數(shù) */
- //vector<Point2f> image_points_buf; /* 緩存每幅圖像上檢測到的角點(diǎn) */
- //vector<vector<Point2f>> image_points_seq; /* 保存檢測到的所有角點(diǎn) */
- //string filename;
- //int count = -1;//用于存儲角點(diǎn)個(gè)數(shù)。
- //while (getline(fin, filename))
- //{
- // image_count++;
- // // 用于觀察檢驗(yàn)輸出
- // cout << "image_count = " << image_count << endl;
- // /* 輸出檢驗(yàn)*/
- // cout << "-->count = " << count;
- // Mat imageInput = imread(filename);
- ofstream fout("caliberation_result.txt"); /* 保存標(biāo)定結(jié)果的文件 */
- cv::namedWindow("Image");
- cv::Mat imageInput;
- std::vector<std::string> filelist;//存放標(biāo)定圖片路徑
- int image_count = 0; /* 圖像數(shù)量 */
- Size image_size; /* 圖像的尺寸 */
- Size board_size = Size(4, 6); /* 標(biāo)定板上每行、列的角點(diǎn)數(shù) */
- vector<Point2f> image_points_buf; /* 緩存每幅圖像上檢測到的角點(diǎn) */
- vector<vector<Point2f>> image_points_seq; /* 保存檢測到的所有角點(diǎn) */
- int count = -1;//用于存儲角點(diǎn)個(gè)數(shù)。
- //生成路徑,此處表示圖片放在工程根目錄下的chessboards文件夾
- for (int i = 1; i <= 21; i++)
- {
- std::stringstream str;//setw(int n)用來控制輸出間隔
- str << "chessboards/chessboard" << std::setw(2) << std::setfill('0') << i << ".jpg";//圖片的相對路徑
- std::cout << str.str() << std::endl;
- filelist.push_back(str.str());
- imageInput = cv::imread(str.str());
- cv::imshow("Image", imageInput);
- //if (image_count == 1) //讀入第一張圖片時(shí)獲取圖像寬高信息
- //{
- // image_size.width = imageInput.cols;
- // image_size.height = imageInput.rows;
- // cout << "image_size.width = " << image_size.width << endl;
- // cout << "image_size.height = " << image_size.height << endl;
- //}
- /* 提取角點(diǎn) */
- //if (0 == findChessboardCorners(imageInput, board_size, image_points_buf))
- //{
- // cout << "can not find chessboard corners!\n"; //找不到角點(diǎn)
- // exit(1);
- //}
- //else
- //{
- findChessboardCorners(imageInput, board_size, image_points_buf);
- Mat view_gray;
- cvtColor(imageInput, view_gray, CV_RGB2GRAY);
- findChessboardCorners(imageInput, board_size, image_points_buf);
- /* 亞像素精確化 */
- find4QuadCornerSubpix(view_gray, image_points_buf, Size(5, 5)); //對粗提取的角點(diǎn)進(jìn)行精確化
- //cornerSubPix(view_gray,image_points_buf,Size(5,5),Size(-1,-1),TermCriteria(CV_TERMCRIT_EPS+CV_TERMCRIT_ITER,30,0.1));
- image_points_seq.push_back(image_points_buf); //保存亞像素角點(diǎn)
- /* 在圖像上顯示角點(diǎn)位置 */
- drawChessboardCorners(view_gray, board_size, image_points_buf, false); //用于在圖片中標(biāo)記角點(diǎn)
- imshow("Camera Calibration", view_gray);//顯示圖片
- waitKey(200);//暫停0.5S
-
- }
-
- int total = image_points_seq.size();
- cout << "total = " << total << endl;
- int CornerNum = board_size.width*board_size.height; //每張圖片上總的角點(diǎn)數(shù)
- for (int ii = 0; ii<total; ii++)
- {
- if (0 == ii%CornerNum)// 24 是每幅圖片的角點(diǎn)個(gè)數(shù)。此判斷語句是為了輸出 圖片號,便于控制臺觀看
- {
- int i = -1;
- i = ii / CornerNum;
- int j = i + 1;
- cout << "--> 第 " << j << "圖片的數(shù)據(jù) --> : " << endl;
- }
- if (0 == ii % 3) // 此判斷語句,格式化輸出,便于控制臺查看
- {
- cout << endl;
- }
- else
- {
- cout.width(10);
- }
- //輸出所有的角點(diǎn)
- cout << " -->" << image_points_seq[ii][0].x;
- cout << " -->" << image_points_seq[ii][0].y;
- }
- cout << "角點(diǎn)提取完成!\n";
- //以下是攝像機(jī)標(biāo)定
- cout << "開始標(biāo)定………………";
- /*棋盤三維信息*/
- Size square_size = Size(10, 10); /* 實(shí)際測量得到的標(biāo)定板上每個(gè)棋盤格的大小 */
- vector<vector<Point3f>> object_points; /* 保存標(biāo)定板上角點(diǎn)的三維坐標(biāo) */
- /*內(nèi)外參數(shù)*/
- Mat cameraMatrix = Mat(3, 3, CV_32FC1, Scalar::all(0)); /* 攝像機(jī)內(nèi)參數(shù)矩陣 */
- vector<int> point_counts; // 每幅圖像中角點(diǎn)的數(shù)量
- Mat distCoeffs = Mat(1, 5, CV_32FC1, Scalar::all(0)); /* 攝像機(jī)的5個(gè)畸變系數(shù):k1,k2,p1,p2,k3 */
- vector<Mat> tvecsMat; /* 每幅圖像的旋轉(zhuǎn)向量 */
- vector<Mat> rvecsMat; /* 每幅圖像的平移向量 */
- /* 初始化標(biāo)定板上角點(diǎn)的三維坐標(biāo) */
- int i, j, t;
- for (t = 0; t<image_count; t++)
- {
- vector<Point3f> tempPointSet;
- for (i = 0; i<board_size.height; i++)
- {
- for (j = 0; j<board_size.width; j++)
- {
- Point3f realPoint;
- /* 假設(shè)標(biāo)定板放在世界坐標(biāo)系中z=0的平面上 */
- realPoint.x = i*square_size.width;
- realPoint.y = j*square_size.height;
- realPoint.z = 0;
- tempPointSet.push_back(realPoint);
- }
- }
- object_points.push_back(tempPointSet);
- }
- /* 初始化每幅圖像中的角點(diǎn)數(shù)量,假定每幅圖像中都可以看到完整的標(biāo)定板 */
- for (i = 0; i<image_count; i++)
- {
- point_counts.push_back(board_size.width*board_size.height);
- }
- /* 開始標(biāo)定 */
- calibrateCamera(object_points, image_points_seq, image_size, cameraMatrix, distCoeffs, rvecsMat, tvecsMat, 0);
- cout << "標(biāo)定完成!\n";
- //對標(biāo)定結(jié)果進(jìn)行評價(jià)
- cout << "開始評價(jià)標(biāo)定結(jié)果………………\n";
- double total_err = 0.0; /* 所有圖像的平均誤差的總和 */
- double err = 0.0; /* 每幅圖像的平均誤差 */
- vector<Point2f> image_points2; /* 保存重新計(jì)算得到的投影點(diǎn) */
- cout << "\t每幅圖像的標(biāo)定誤差:\n";
- fout << "每幅圖像的標(biāo)定誤差:\n";
- for (i = 0; i<image_count; i++)
- {
- vector<Point3f> tempPointSet = object_points[i];
- /* 通過得到的攝像機(jī)內(nèi)外參數(shù),對空間的三維點(diǎn)進(jìn)行重新投影計(jì)算,得到新的投影點(diǎn) */
- projectPoints(tempPointSet, rvecsMat[i], tvecsMat[i], cameraMatrix, distCoeffs, image_points2);
- /* 計(jì)算新的投影點(diǎn)和舊的投影點(diǎn)之間的誤差*/
- vector<Point2f> tempImagePoint = image_points_seq[i];
- Mat tempImagePointMat = Mat(1, tempImagePoint.size(), CV_32FC2);
- Mat image_points2Mat = Mat(1, image_points2.size(), CV_32FC2);
- for (int j = 0; j < tempImagePoint.size(); j++)
- {
- image_points2Mat.at<Vec2f>(0, j) = Vec2f(image_points2[j].x, image_points2[j].y);
- tempImagePointMat.at<Vec2f>(0, j) = Vec2f(tempImagePoint[j].x, tempImagePoint[j].y);
- }
- err = norm(image_points2Mat, tempImagePointMat, NORM_L2);
- total_err += err /= point_counts[i];
- std::cout << "第" << i + 1 << "幅圖像的平均誤差:" << err << "像素" << endl;
- fout << "第" << i + 1 << "幅圖像的平均誤差:" << err << "像素" << endl;
- }
- std::cout << "總體平均誤差:" << total_err / image_count << "像素" << endl;
- fout << "總體平均誤差:" << total_err / image_count << "像素" << endl << endl;
- std::cout << "評價(jià)完成!" << endl;
- //保存定標(biāo)結(jié)果
- std::cout << "開始保存定標(biāo)結(jié)果………………" << endl;
- Mat rotation_matrix = Mat(3, 3, CV_32FC1, Scalar::all(0)); /* 保存每幅圖像的旋轉(zhuǎn)矩陣 */
- fout << "相機(jī)內(nèi)參數(shù)矩陣:" << endl;
- fout << cameraMatrix << endl << endl;
- fout << "畸變系數(shù):\n";
- fout << distCoeffs << endl << endl << endl;
- for (int i = 0; i<image_count; i++)
- {
- fout << "第" << i + 1 << "幅圖像的旋轉(zhuǎn)向量:" << endl;
- fout << tvecsMat[i] << endl;
- /* 將旋轉(zhuǎn)向量轉(zhuǎn)換為相對應(yīng)的旋轉(zhuǎn)矩陣 */
- Rodrigues(tvecsMat[i], rotation_matrix);
- fout << "第" << i + 1 << "幅圖像的旋轉(zhuǎn)矩陣:" << endl;
- fout << rotation_matrix << endl;
- fout << "第" << i + 1 << "幅圖像的平移向量:" << endl;
- fout << rvecsMat[i] << endl << endl;
- }
- std::cout << "完成保存" << endl;
- fout << endl;
- /************************************************************************
- 顯示定標(biāo)結(jié)果
- *************************************************************************/
- Mat mapx = Mat(image_size, CV_32FC1);
- Mat mapy = Mat(image_size, CV_32FC1);
- Mat R = Mat::eye(3, 3, CV_32F);
- std::cout << "保存矯正圖像" << endl;
- string imageFileName;
- std::stringstream StrStm;
- for (int i = 0; i != image_count; i++)
- {
- std::cout << "Frame #" << i + 1 << "..." << endl;
- initUndistortRectifyMap(cameraMatrix, distCoeffs, R, cameraMatrix, image_size, CV_32FC1, mapx, mapy);
- StrStm.clear();
- imageFileName.clear();
- string filePath = "chess";
- StrStm << i + 1;
- StrStm >> imageFileName;
- filePath += imageFileName;
- filePath += ".bmp";
- Mat imageSource = imread(filePath);
- Mat newimage = imageSource.clone();
- //另一種不需要轉(zhuǎn)換矩陣的方式
- //undistort(imageSource,newimage,cameraMatrix,distCoeffs);
- remap(imageSource, newimage, mapx, mapy, INTER_LINEAR);
- StrStm.clear();
- filePath.clear();
- StrStm << i + 1;
- StrStm >> imageFileName;
- imageFileName += "_d.jpg";
- imwrite(imageFileName, newimage);
- }
- std::cout << "保存結(jié)束" << endl;
- return;
- }
復(fù)制代碼
所有資料51hei提供下載:
張正友相機(jī)標(biāo)定.zip
(6.57 MB, 下載次數(shù): 28)
2018-8-6 14:31 上傳
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