android - Get white pixels and save it to array in java opencv -

i try white pixel in binary image , save coodinate of pixel array of matrix 2x1. this:

//x  y //2  3 //7  8 //13 16 //24 26 //78 103 //22 14 //16 18 

i use opencv in android , white pixel in binary image , save coodinate of pixel array handle. don't know how save array , array in opencv suitable(matofpoint,matofpoint2f,matofint...)

here code, lack

        size binaryimage_size = binaryimage.size();         double[] pixel_white = new double[0]; //just use 1 channel         matoffloat pointpositions = new matoffloat();          for(int i=0;i<binaryimage.height;i++)         {             for(int j=0;jbinaryimage.width;j++)             {                 pixel_white = binaryimage.get(i,j);                 if(pixel_white[0]>0)                 {                     // maybe use pointpositions.push_back(point(i,j)); wrong                     //which implementation should here?                 }             }         }