fisheyeDistortPoints.cpp

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#include "mexopencv.hpp"
#include "opencv2/calib3d.hpp"
using namespace std;
using namespace cv;

void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
    // Check the number of arguments
    nargchk(nrhs>=3 && (nrhs%2)==1 && nlhs<=1);

    // Argument vector
    vector<MxArray> rhs(prhs, prhs+nrhs);

    // Option processing
    double alpha = 0;
    for (int i=3; i<nrhs; i+=2) {
        string key(rhs[i].toString());
        if (key == "Alpha")
            alpha = rhs[i+1].toDouble();
        else
            mexErrMsgIdAndTxt("mexopencv:error",
                "Unrecognized option %s", key.c_str());
    }

    // Process
    Mat undistorted(rhs[0].toMat(CV_64F)), distorted,
        K(rhs[1].toMat(CV_64F)),
        D(rhs[2].toMat(CV_64F));
    bool cn1 = (undistorted.channels() == 1);
    if (cn1) undistorted = undistorted.reshape(2,0);
    fisheye::distortPoints(undistorted, distorted, K, D, alpha);
    if (cn1) distorted = distorted.reshape(1,0);
    plhs[0] = MxArray(distorted);
}