Mex for Opencv的groupRectangles

时间:2015-10-02 20:34:36

标签: c++ matlab opencv mex

我正在使用matlab中的mexopencv,但是我注意到groupRectangles Matlab包装器只支持3个输入参数,而源代码有3个不同的版本。

我不知道C ++,但我试图遵循指南和编写的代码,但我无法编译它;它给出了一个特殊的错误。

如果有人可以提供帮助,我将不胜感激,我需要为我的项目返回最终边界框的分数。

所以!我发现了一个非常相似的问题&在线回答:

在OpenCV的cascadedetect.cpp中,有几种groupRectangles函数的变体: void groupRectangles(std :: vector& rectList,int groupThreshold,double eps); void groupRectangles(std :: vector& rectList,std :: vector& weights,int groupThreshold,double eps); void groupRectangles(std :: vector& rectList,std :: vector& rejectLevels,std :: vector& levelWeights,int groupThreshold,double eps); 但是在OpenCV文档中,只清楚地记录了第一个变体,提到了第二个变体,但没有解释权重参数。第三个甚至没有提到。

我们希望获得分组矩形的分数,记录的groupRectangles变体将无法帮助我们。我们必须使用第三个,rejectLevels设置为零: 矢量级别(wins.size(),0); groupRectangles(wins,levels,scores,groupThreshold,eps); 其中得分是胜利的分数。它们的大小相同。

所以我一直在尝试使用-Developing一个新的MEX功能,以与Kyamagu的mexopencv类似的方式编写包装器 - 如此处所提到的https://github.com/kyamagu/mexopencv

/**
 * @file groupRectangles.cpp
 * @brief mex interface for groupRectangles //manual 
 * @author Kota Yamaguchi
 * @date 2011
 */
#include "mexopencv.hpp"
using namespace std;
using namespace cv;

template <>
vector<Rect> MxArray::toVector<Rect>() const
{
    vector<Rect> vr;
    if (isNumeric())
        vr.push_back(toRect());
    else if (isCell()) {
        int n = numel();
        vector<MxArray> vm(toVector<MxArray>());
        vr.reserve(n);
        for (int i=0; i<n; ++i)
            vr.push_back(vm[i].toRect());
    }
    else
        mexErrMsgIdAndTxt("mexopencv:error","Invalid input");
    return vr;
}

/*
* edit start
*/

template <>
vector<Scalar> MxArray::toVector<Scalar>() const
{
    vector<Scalar> levels;
    if (isNumeric())
        levels.push_back(toScalar());
    else if (isCell()) {
        int n = numel();
        vector<MxArray> vm(toVector<MxArray>());
        levels.reserve(n);
        for (int i=0; i<n; ++i)
            levels.push_back(vm[i].toScalar());
    }
    else
        mexErrMsgIdAndTxt("mexopencv:error","Invalid input");
    return levels;
}

template <>
vector<Scalar> MxArray::toVector<Scalar>() const
{
    vector<Scalar> scores;
    if (isNumeric())
        scores.push_back(toScalar());
    else if (isCell()) {
        int n = numel();
        vector<MxArray> vm(toVector<MxArray>());
        scores.reserve(n);
        for (int i=0; i<n; ++i)
            scores.push_back(vm[i].toScalar());
    }
    else
        mexErrMsgIdAndTxt("mexopencv:error","Invalid input");
    return scores;
}





/*
* edit end
*/



/**
 * Main entry called from Matlab
 * @param nlhs number of left-hand-side arguments
 * @param plhs pointers to mxArrays in the left-hand-side
 * @param nrhs number of right-hand-side arguments
 * @param prhs pointers to mxArrays in the right-hand-side
 */
void mexFunction( int nlhs, mxArray *plhs[],
                  int nrhs, const mxArray *prhs[] )
{
    // Check the number of arguments
    if (nrhs<2 || (nrhs%2)!=0 || nlhs>1)
        mexErrMsgIdAndTxt("mexopencv:error","Wrong number of arguments");

    // Argument vector
    vector<MxArray> rhs(prhs,prhs+nrhs);
    vector<Rect> rectList(rhs[0].toVector<Rect>());



/*
* edit start
*/

  vector<Scalar> levels(rhs[1].toVector<Scalar>());
  vector<Scalar> scores(rhs[2].toVector<Scalar>());

/*
* edit end
*/

/*
* edited
*/


    int groupThreshold = rhs[3].toInt();
    double eps=0.2;

    for (int i=4; i<nrhs; i+=2) {
        string key(rhs[i].toString());
        if (key=="EPS")
            eps = rhs[i+1].toDouble();
        else
            mexErrMsgIdAndTxt("mexopencv:error","Unrecognized option %s", key.c_str());
    }

    groupRectangles(rectList,levels,scores,groupThreshold,eps);
    plhs[0] = MxArray(rectList);
}

和我得到的错误:

  

src / + cv / fullgroupRectangles.cpp:52:16:错误:重新定义   “的std ::矢量&lt; TP&GT; MxArray :: toVector()const [with T =   cv :: Scalar ]'src / + cv / fullgroupRectangles.cpp:34:16:错误:   “的std ::矢量&lt; TP&GT; MxArray :: toVector()const [with T =   cv :: Scalar ]'先前在此声明   src / + cv / fullgroupRectangles.cpp:在函数'void mexFunction(int,   mxArray **,int,const mxArray **)':   src / + cv / fullgroupRectangles.cpp:123:62:错误:没有匹配的功能   调用'groupRectangles(std :: vector&gt;&amp;,   std :: vector&gt;&amp;,std :: vector

     
    

&amp;,int&amp;,double&amp;)'src / + cv / fullgroupRectangles.cpp:123:62:注意:候选人是:在包含的文件中     /usr/local/include/opencv2/opencv.hpp:54:0,                      来自include / MxArray.hpp:14,                      来自include / mexopencv.hpp:14,                      来自src / + cv / fullgroupRectangles.cpp:7:/usr/local/include/opencv2/objdetect/objdetect.hpp:330:17:注意:void     cv :: groupRectangles(std :: vector&gt;&amp;,int,double)     /usr/local/include/opencv2/objdetect/objdetect.hpp:330:17:注意:
    候选人需要3个参数,5个提供     /usr/local/include/opencv2/objdetect/objdetect.hpp:331:19:注意:无效     cv :: groupRectangles(std :: vector&gt;&amp;,std :: vector&amp;,     int,double)     /usr/local/include/opencv2/objdetect/objdetect.hpp:331:19:注意:
    候选人需要4个参数,5个提供来自的文件     /usr/local/include/opencv2/opencv.hpp:54:0,                      来自include / MxArray.hpp:14,                      来自include / mexopencv.hpp:14,                      来自src / + cv / fullgroupRectangles.cpp:7:/usr/local/include/opencv2/objdetect/objdetect.hpp:332:17:注意:void     cv :: groupRectangles(std :: vector&gt;&amp;,int,double,     std :: vector ,std :: vector )     /usr/local/include/opencv2/objdetect/objdetect.hpp:332:17:注意:没有     来自'std :: vector的参数2的已知转换     'to'int'/usr/local/include/opencv2/objdetect/objdetect.hpp:333:17:note:void cv :: groupRectangles(std :: vector&gt;&amp;,     std :: vector&amp;,std :: vector&amp;,int,double)     /usr/local/include/opencv2/objdetect/objdetect.hpp:333:17:注意:没有     来自'std :: vector的参数2的已知转换     '到'std :: vector&amp;'

  
mex: compile of ' "src/+cv/fullgroupRectangles.cpp"' failed.
     

make:*** [+ cv / fullgroupRectangles.mexa64]错误255

我真的很感激,谢谢!

2 个答案:

答案 0 :(得分:0)

带有5个参数的groupRectangles()采用矢量级别和矢量分数。只是需要修复。

  /**
   * @file groupRectangles.cpp
   * @brief mex interface for groupRectangles //manual 
   * @author Kota Yamaguchi
   * @date 2011
   */
  #include "mexopencv.hpp"
  using namespace std;
  using namespace cv;


  /*
  * edit end
  */



  /**
   * Main entry called from Matlab
   * @param nlhs number of left-hand-side arguments
   * @param plhs pointers to mxArrays in the left-hand-side
   * @param nrhs number of right-hand-side arguments
   * @param prhs pointers to mxArrays in the right-hand-side
   */
  void mexFunction( int nlhs, mxArray *plhs[],
                    int nrhs, const mxArray *prhs[] )
  {
      // Check the number of arguments
      if (nrhs<2 || (nrhs%2)!=0 || nlhs>1)
          mexErrMsgIdAndTxt("mexopencv:error","Wrong number of arguments");

      // Argument vector
      vector<MxArray> rhs(prhs,prhs+nrhs);
      vector<Rect> rectList(rhs[0].toVector<Rect>());



  /*
  * edit start
  */

    vector<int> levels(rhs[1].toVector<int>());
    vector<double> scores(rhs[2].toVector<double>());

  /*
  * edit end
  */

  /*
  * edited
  */


      int groupThreshold = rhs[3].toInt();
      double eps=0.2;

      for (int i=4; i<nrhs; i+=2) {
          string key(rhs[i].toString());
          if (key=="EPS")
              eps = rhs[i+1].toDouble();
          else
              mexErrMsgIdAndTxt("mexopencv:error","Unrecognized option %s", key.c_str());
      }

      groupRectangles(rectList,levels, scores,groupThreshold,eps);
      plhs[0] = MxArray(rectList);

  }

答案 1 :(得分:0)

谢谢,但是这会返回单个实例值。每次我执行返回的值都会改变。我相信我需要以某种方式访问​​我从matlab发送的所有元素并将它们添加到向量中。