getRectSubPix.cpp

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#include "mexopencv.hpp"
#include "opencv2/imgproc.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
    int patchType = -1;
    for (int i=3; i<nrhs; i+=2) {
        string key(rhs[i].toString());
        if (key == "PatchType")
            patchType = (rhs[i+1].isChar()) ?
                ClassNameMap[rhs[i+1].toString()] : rhs[i+1].toInt();
        else
            mexErrMsgIdAndTxt("mexopencv:error",
                "Unrecognized option %s", key.c_str());
    }

    // Process
    Mat image(rhs[0].toMat(rhs[0].isUint8() ? CV_8U : CV_32F)), patch;
    Size patchSize(rhs[1].toSize());
    Point2f center(rhs[2].toPoint2f());
    getRectSubPix(image, patchSize, center, patch, patchType);
    plhs[0] = MxArray(patch);
}