samples/cpp/tutorial_code/ImgProc/Morphology_2.cpp

高階形態學變換示例程式碼

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#include "opencv2/imgproc.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/highgui.hpp"
#include <iostream>
 
using namespace cv;
 
Mat src, dst;
 
int morph_elem = 0;
int morph_size = 0;
int morph_operator = 0;
int const max_operator = 4;
int const max_elem = 3;
int const max_kernel_size = 21;
 
const char* window_name = "形態學變換演示";
 
 
void Morphology_Operations( int, void* );
 
int main( int argc, char** argv )
{
  CommandLineParser parser( argc, argv, "{@input | baboon.jpg | 輸入影像}" );
src = imread( samples::findFile( parser.get<String>( "@input" ) ), IMREAD_COLOR );
  if (src.empty())
  {
std::cout << "無法開啟或找到影像!\n" << std::endl;
std::cout << "用法: " << argv[0] << " <輸入影像>" << std::endl;
    return EXIT_FAILURE;
  }
 
namedWindow( window_name, WINDOW_AUTOSIZE ); // 建立視窗
 
createTrackbar("操作:\n 0: 開運算 - 1: 閉運算 \n 2: 梯度 - 3: 頂帽 \n 4: 黑帽", window_name, &morph_operator, max_operator, Morphology_Operations );
 
createTrackbar( "元素:\n 0: 矩形 - 1: 十字形 - 2: 橢圓形 - 3: 菱形", window_name,
&morph_elem, max_elem,
Morphology_Operations );
 
createTrackbar( "核心大小:\n 2n +1", window_name,
&morph_size, max_kernel_size,
Morphology_Operations );
 
Morphology_Operations( 0, 0 );
 
waitKey(0);
  return 0;
}
 
 
void Morphology_Operations( int, void* )
{
  // 由於 MORPH_X : 2,3,4,5 和 6
  int operation = morph_operator + 2;
 
  Mat element = getStructuringElement( morph_elem, Size( 2*morph_size + 1, 2*morph_size+1 ), Point( morph_size, morph_size ) );
 
  morphologyEx( src, dst, operation, element );
  imshow( window_name, dst );
}