转载自:https://blog.csdn.net/Taily_Duan/article/details/53405919
Q群:OpenCV图像处理视觉算法 50953792
// subpixel.cpp : 定义控制台应用程序的入口点。
//
/*
#include "stdafx.h"
#include
#include
#include
using namespace cv;
using namespace std;
*/
// opencv_test.cpp : 定义控制台应用程序的入口点。
//
#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/calib3d/calib3d.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "stdafx.h"
#include
//#include
#include "cv.h"
#include
#include
using namespace std;
using namespace cv;
int mmain();
const int boardWidth = 9; //横向的角点数目
const int boardHeight = 6; //纵向的角点数据
const int boardCorner = boardWidth * boardHeight; //总的角点数据
const int frameNumber = 13; //相机标定时需要采用的图像帧数
const int squareSize = 20; //标定板黑白格子的大小 单位mm
const Size boardSize = Size(boardWidth, boardHeight); //
Mat intrinsic; //相机内参数
Mat distortion_coeff; //相机畸变参数
vector
vector
vector
vector
vector
/*
int main()
{
int t;
//cout<<"OK!!"<
//imshow("lans",sd);
mmain();
waitKey();
return 0;
}*/
/*计算标定板上模块的实际物理坐标*/
void calRealPoint(vector
{
// Mat imgpoint(boardheight, boardwidth, CV_32FC3,Scalar(0,0,0));
vector
for (int rowIndex = 0; rowIndex < boardheight; rowIndex++)
{
for (int colIndex = 0; colIndex < boardwidth; colIndex++)
{
// imgpoint.at
imgpoint.push_back(Point3f(rowIndex * squaresize, colIndex * squaresize, 0));
}
}
for (int imgIndex = 0; imgIndex < imgNumber; imgIndex++)
{
obj.push_back(imgpoint);
}
}
/*设置相机的初始参数 也可以不估计*/
void guessCameraParam(void )
{
/*分配内存*/
intrinsic.create(3, 3, CV_64FC1);
distortion_coeff.create(5, 1, CV_64FC1);
/*
fx 0 cx
0 fy cy
0 0 1
*/
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
intrinsic.at
/*
k1 k2 p1 p2 p3
*/
distortion_coeff.at
distortion_coeff.at
distortion_coeff.at
distortion_coeff.at
distortion_coeff.at
}
void outputCameraParam(void )
{
/*保存数据*/
//cvSave("cameraMatrix.xml", &intrinsic);
//cvSave("cameraDistoration.xml", &distortion_coeff);
//cvSave("rotatoVector.xml", &rvecs);
//cvSave("translationVector.xml", &tvecs);
/*输出数据*/
cout << "fx :" << intrinsic.at
cout << "cx :" << intrinsic.at
cout << "k1 :" << distortion_coeff.at
cout << "k2 :" << distortion_coeff.at
cout << "p1 :" << distortion_coeff.at
cout << "p2 :" << distortion_coeff.at
cout << "p3 :" << distortion_coeff.at
}
int main()
{
int imageHeight;
int imageWidth;
int goodFrameCount = 0;
Mat img,rgbImage;
Mat tImage=imread("left1.jpg");
imageHeight = tImage.rows;
imageWidth = tImage.cols;
Mat grayImage(imageHeight,imageWidth,CV_8U);
while (goodFrameCount < frameNumber)
{
char filename[100];
sprintf_s(filename,"left%d.jpg", goodFrameCount + 1);
rgbImage = imread(filename);
cvtColor(rgbImage, grayImage, CV_BGR2GRAY);
imshow("Camera", grayImage);
bool isFind = findChessboardCorners(rgbImage, boardSize, corner,0);
//bool isFind = findChessboardCorners( rgbImage, boardSize, corner,
//CV_CALIB_CB_ADAPTIVE_THRESH | CV_CALIB_CB_FAST_CHECK | CV_CALIB_CB_NORMALIZE_IMAGE);
if (isFind == true) //所有角点都被找到 说明这幅图像是可行的
{
cornerSubPix(grayImage, corner, Size(5,5), Size(-1, -1), TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 20, 0.1));
drawChessboardCorners(rgbImage, boardSize, corner, isFind);
imshow("chessboard", rgbImage);
corners.push_back(corner);
goodFrameCount++;
cout << "The image"<
else
{
cout << "The image is bad please try again" << endl;
}
if (waitKey(10) == 'q')
{
break;
}
}
/*
图像采集完毕 接下来开始摄像头的校正
calibrateCamera()
输入参数 objectPoints 角点的实际物理坐标
imagePoints 角点的图像坐标
imageSize 图像的大小
输出参数
cameraMatrix 相机的内参矩阵
distCoeffs 相机的畸变参数
rvecs 旋转矢量(外参数)
tvecs 平移矢量(外参数)
*/
/*设置实际初始参数 根据calibrateCamera来 如果flag = 0 也可以不进行设置*/
guessCameraParam();
cout << "guess successful" << endl;
/*计算实际的校正点的三维坐标*/
calRealPoint(objRealPoint, boardWidth, boardHeight,frameNumber, squareSize);
cout << "cal real successful" << endl;
/*标定摄像头*/
calibrateCamera(objRealPoint, corners, Size(imageWidth, imageHeight), intrinsic, distortion_coeff, rvecs, tvecs, 0);
cout << "calibration successful" << endl;
/*保存并输出参数*/
outputCameraParam();
cout << "out successful" << endl;
/*显示畸变校正效果*/
Mat cImage;
undistort(rgbImage, cImage, intrinsic, distortion_coeff);
imshow("Corret Image", cImage);
cout << "Correct Image" << endl;
cout << "Wait for Key" << endl;
waitKey();
return 0;
}
// subpixel.cpp : 定义控制台应用程序的入口点。
//
/*
#include "stdafx.h"
#include
#include
#include
using namespace cv;
using namespace std;
*/
// opencv_test.cpp : 定义控制台应用程序的入口点。
//
#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/calib3d/calib3d.hpp"
#include "opencv2/highgui/highgui.hpp"
#include
#include
#include
#include
#include
#include
#include
#include
#include "stdafx.h"
#include
//#include
#include "cv.h"
#include
using namespace std;
using namespace cv;
const int imageWidth = 640; //摄像头的分辨率
const int imageHeight = 480;
const int boardWidth = 9; //横向的角点数目
const int boardHeight = 6; //纵向的角点数据
const int boardCorner = boardWidth * boardHeight; //总的角点数据
const int frameNumber = 13; //相机标定时需要采用的图像帧数
const int squareSize = 20; //标定板黑白格子的大小 单位mm
const Size boardSize = Size(boardWidth, boardHeight); //
Size imageSize = Size(imageWidth, imageHeight);
Mat R, T, E, F; //R 旋转矢量 T平移矢量 E本征矩阵 F基础矩阵
vector
vector
vector
vector
vector
vector
vector
Mat rgbImageL, grayImageL;
Mat rgbImageR, grayImageR;
Mat Rl, Rr, Pl, Pr, Q; //校正旋转矩阵R,投影矩阵P 重投影矩阵Q (下面有具体的含义解释)
Mat mapLx, mapLy, mapRx, mapRy; //映射表
Rect validROIL, validROIR; //图像校正之后,会对图像进行裁剪,这里的validROI就是指裁剪之后的区域
/*
事先标定好的左相机的内参矩阵
fx 0 cx
0 fy cy
0 0 1
*/
Mat cameraMatrixL = (Mat_
0, 342.505, 233.876,
0, 0, 1);
Mat distCoeffL = (Mat_
/*
事先标定好的右相机的内参矩阵
fx 0 cx
0 fy cy
0 0 1
*/
Mat cameraMatrixR = (Mat_
0, 342.505, 233.876,
0, 0, 1);
Mat distCoeffR = (Mat_
/*计算标定板上模块的实际物理坐标*/
void calRealPoint(vector
{
// Mat imgpoint(boardheight, boardwidth, CV_32FC3,Scalar(0,0,0));
vector
for (int rowIndex = 0; rowIndex < boardheight; rowIndex++)
{
for (int colIndex = 0; colIndex < boardwidth; colIndex++)
{
// imgpoint.at
imgpoint.push_back(Point3f(rowIndex * squaresize, colIndex * squaresize, 0));
}
}
for (int imgIndex = 0; imgIndex < imgNumber; imgIndex++)
{
obj.push_back(imgpoint);
}
}
void outputCameraParam(void)
{
/*保存数据*/
/*输出数据*/
FileStorage fs("intrinsics.yml", FileStorage::WRITE);
if (fs.isOpened())
{
fs << "cameraMatrixL" << cameraMatrixL << "cameraDistcoeffL" << distCoeffL <<"cameraMatrixR" << cameraMatrixR << "cameraDistcoeffR" << distCoeffR;
fs.release();
cout << "cameraMatrixL=:" << cameraMatrixL <
else
{
cout << "Error: can not save the intrinsics!!!!!" << endl;
}
fs.open("extrinsics.yml", FileStorage::WRITE);
if (fs.isOpened())
{
fs << "R" << R << "T" << T << "Rl" << Rl << "Rr" << Rr << "Pl" << Pl << "Pr" << Pr << "Q" << Q;
cout << "R=" << R << endl << "T=" << T << endl << "Rl=" << Rl << endl << "Rr=" << Rr << endl << "Pl=" << Pl << endl << "Pr=" << Pr << endl << "Q=" << Q << endl;
fs.release();
}
else
cout << "Error: can not save the extrinsic parameters\n";
}
int _tmain(int argc, _TCHAR* argv[])
{
Mat img;
int goodFrameCount = 0;
while (goodFrameCount < frameNumber)
{
char filename[100];
/*读取左边的图像*/
sprintf_s(filename, "left%d.jpg", goodFrameCount + 1);
rgbImageL = imread(filename, CV_LOAD_IMAGE_COLOR);
cvtColor(rgbImageL, grayImageL, CV_BGR2GRAY);
/*读取右边的图像*/
sprintf_s(filename, "right%d.jpg", goodFrameCount + 1);
rgbImageR = imread(filename, CV_LOAD_IMAGE_COLOR);
cvtColor(rgbImageR, grayImageR, CV_BGR2GRAY);
bool isFindL, isFindR;
isFindL = findChessboardCorners(rgbImageL, boardSize, cornerL);
isFindR = findChessboardCorners(rgbImageR, boardSize, cornerR);
if (isFindL == true && isFindR == true) //如果两幅图像都找到了所有的角点 则说明这两幅图像是可行的
{
/*
Size(5,5) 搜索窗口的一半大小
Size(-1,-1) 死区的一半尺寸
TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 20, 0.1)迭代终止条件
*/
cornerSubPix(grayImageL, cornerL, Size(5, 5), Size(-1, -1), TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 20, 0.1));
drawChessboardCorners(rgbImageL, boardSize, cornerL, isFindL);
imshow("chessboardL", rgbImageL);
imagePointL.push_back(cornerL);
cornerSubPix(grayImageR, cornerR, Size(5, 5), Size(-1, -1), TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 20, 0.1));
drawChessboardCorners(rgbImageR, boardSize, cornerR, isFindR);
imshow("chessboardR", rgbImageR);
imagePointR.push_back(cornerR);
/*
本来应该判断这两幅图像是不是好的,如果可以匹配的话才可以用来标定
但是在这个例程当中,用的图像是系统自带的图像,都是可以匹配成功的。
所以这里就没有判断
*/
//string filename = "res\\image\\calibration";
//filename += goodFrameCount + ".jpg";
//cvSaveImage(filename.c_str(), &IplImage(rgbImage)); //把合格的图片保存起来
goodFrameCount++;
cout << "The image"<
else
{
cout << "The image is bad please try again" << endl;
}
if (waitKey(10) == 'q')
{
break;
}
}
/*
计算实际的校正点的三维坐标
根据实际标定格子的大小来设置
*/
calRealPoint(objRealPoint, boardWidth, boardHeight, frameNumber, squareSize);
cout << "cal real successful" << endl;
/*
标定摄像头
由于左右摄像机分别都经过了单目标定
所以在此处选择flag = CALIB_USE_INTRINSIC_GUESS
*/
double rms = stereoCalibrate(objRealPoint, imagePointL, imagePointR,
cameraMatrixL, distCoeffL,
cameraMatrixR, distCoeffR,
Size(imageWidth, imageHeight), R, T, E, F,
TermCriteria(TermCriteria::COUNT + TermCriteria::EPS, 100, 1e-5),
CALIB_USE_INTRINSIC_GUESS);
cout << "Stereo Calibration done with RMS error = " << rms << endl;
/*
立体校正的时候需要两幅图像共面并且行对准 以使得立体匹配更加的可靠
使得两幅图像共面的方法就是把两个摄像头的图像投影到一个公共成像面上,这样每幅图像从本图像平面投影到公共图像平面都需要一个旋转矩阵R
stereoRectify 这个函数计算的就是从图像平面投影都公共成像平面的旋转矩阵Rl,Rr。 Rl,Rr即为左右相机平面行对准的校正旋转矩阵。
左相机经过Rl旋转,右相机经过Rr旋转之后,两幅图像就已经共面并且行对准了。
其中Pl,Pr为两个相机的投影矩阵,其作用是将3D点的坐标转换到图像的2D点的坐标:P*[X Y Z 1]' =[x y w]
Q矩阵为重投影矩阵,即矩阵Q可以把2维平面(图像平面)上的点投影到3维空间的点:Q*[x y d 1] = [X Y Z W]。其中d为左右两幅图像的时差
*/
stereoRectify(cameraMatrixL, distCoeffL, cameraMatrixR, distCoeffR, imageSize, R, T, Rl, Rr, Pl, Pr, Q,
CALIB_ZERO_DISPARITY,-1,imageSize,&validROIL,&validROIR);
/*
根据stereoRectify 计算出来的R 和 P 来计算图像的映射表 mapx,mapy
mapx,mapy这两个映射表接下来可以给remap()函数调用,来校正图像,使得两幅图像共面并且行对准
ininUndistortRectifyMap()的参数newCameraMatrix就是校正后的摄像机矩阵。在openCV里面,校正后的计算机矩阵Mrect是跟投影矩阵P一起返回的。
所以我们在这里传入投影矩阵P,此函数可以从投影矩阵P中读出校正后的摄像机矩阵
*/
initUndistortRectifyMap(cameraMatrixL, distCoeffL, Rl, Pr, imageSize, CV_32FC1, mapLx, mapLy);
initUndistortRectifyMap(cameraMatrixR, distCoeffR, Rr, Pr, imageSize, CV_32FC1, mapRx, mapRy);
Mat rectifyImageL, rectifyImageR;
cvtColor(grayImageL, rectifyImageL, CV_GRAY2BGR);
cvtColor(grayImageR, rectifyImageR, CV_GRAY2BGR);
imshow("Rectify Before", rectifyImageL);
cout << "按Q1退出 ..." << endl;
/*
经过remap之后,左右相机的图像已经共面并且行对准了
*/
Mat rectifyImageL2,rectifyImageR2;
remap(rectifyImageL, rectifyImageL2, mapLx, mapLy, INTER_LINEAR);
remap(rectifyImageR, rectifyImageR2, mapRx, mapRy, INTER_LINEAR);
cout << "按Q2退出 ..." << endl;
imshow("ImageL", rectifyImageL2);
imshow("ImageR", rectifyImageR2);
/*保存并输出数据*/
outputCameraParam();
/*
把校正结果显示出来
把左右两幅图像显示到同一个画面上
这里只显示了最后一副图像的校正结果。并没有把所有的图像都显示出来
*/
Mat canvas;
double sf;
int w, h;
sf = 600. / MAX(imageSize.width, imageSize.height);
w = cvRound(imageSize.width * sf);
h = cvRound(imageSize.height * sf);
canvas.create(h, w * 2, CV_8UC3);
/*左图像画到画布上*/
Mat canvasPart = canvas(Rect(w*0, 0, w, h)); //得到画布的一部分
resize(rectifyImageL2, canvasPart, canvasPart.size(), 0, 0, INTER_AREA); //把图像缩放到跟canvasPart一样大小
Rect vroiL(cvRound(validROIL.x*sf), cvRound(validROIL.y*sf), //获得被截取的区域
cvRound(validROIL.width*sf), cvRound(validROIL.height*sf));
rectangle(canvasPart, vroiL, Scalar(0, 0, 255), 3, 8); //画上一个矩形
cout << "Painted ImageL" << endl;
/*右图像画到画布上*/
canvasPart = canvas(Rect(w, 0, w, h)); //获得画布的另一部分
resize(rectifyImageR2, canvasPart, canvasPart.size(), 0, 0, INTER_LINEAR);
Rect vroiR(cvRound(validROIR.x * sf), cvRound(validROIR.y*sf),
cvRound(validROIR.width * sf), cvRound(validROIR.height * sf));
rectangle(canvasPart, vroiR, Scalar(0, 255, 0), 3, 8);
cout << "Painted ImageR" << endl;
/*画上对应的线条*/
for (int i = 0; i < canvas.rows;i+=16)
line(canvas, Point(0, i), Point(canvas.cols, i), Scalar(0, 255, 0), 1, 8);
imshow("rectified", canvas);
cout << "wait key" << endl;
waitKey();
//system("pause");
return 0;
}