Question

我想在图像上投影一个点（-1450，-1660）我正在使用opencv 4.0.1 c ++ 我有相机矩阵和失真系数我的代码是

    vector <Point3f> inputpoints;
    Point3f myPoint;
    myPoint.x = -1450;
    myPoint.y = -1660;
    myPoint.z = 0;
    inputpoints.push_back(myPoint);

    vector<Point2f> outputpoints;

    vector<Point3f> tvec;
    tvec.push_back(Point3f(0, 0, 0));

    vector<Point3f> rvec;
    rvec.push_back(Point3f(0, 0, 0));

    double mydata[9] = { 3.3202343554882879e+02, 1., 6.4337059696010670e+02, 0, 3.3196938477610536e+02, 5.3844814394773562e+02, 0., 0., 1. };

    Mat mycameraMatrix = Mat(3, 3, CV_64F, mydata);

    double mydata2[4] = { -1.1129472191078109e-03, 4.9443845791693870e-02,
        -7.2244333582166609e-03, -1.7309984187889034e-03 };

    Mat mydiscoff = Mat{ 4,1, CV_64F ,mydata2 };
    Mat newCamMat1= Mat(3, 3, CV_64F);

   cv::fisheye::projectPoints(inputpoints, rvec, tvec, mycameraMatrix, mydiscoff, outputpoints);

运行程序时出现此异常

OpenCV(4.0.1) Error: Assertion failed (mtype == type0 || (CV_MAT_CN(mtype) == CV_MAT_CN(type0) && ((1 << type0) & fixedDepthMask) != 0)) in cv::debug_build_guard::_OutputArray::create, file c:\build\master_winpack-build-win64-vc15\opencv\modules\core\src\matrix_wrap.cpp, line 1395

我将相机矩阵的类型和失真系数更改为CV_32f，但是仍然遇到相同的错误，我是openCV的初学者..所以有人可以告诉我是什么引起了这个异常吗？我知道rvec应该是3 * 3，但我只是跟随别人写的可以这样写的代码

Answer 1

好吧，问题在于projectpoints和fisheye :: projectpoints在参数顺序上是不同的。所以我把属于项目点的顺序放在

OpenCV fisheye :: projectpoints断言失败

1 个答案: