samples/cpp/tutorial_code/ImgProc/Morphology_2.cpp

高级形态学变换示例代码

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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 = 2;
int const max_kernel_size = 21;
 
const char* window_name = "形态学变换演示";
 
 
void Morphology_Operations( int, void* );
 
int main( int argc, char** argv )
{
  CommandLineParser parser( argc, argv, "{@input | baboon.jpg | 输入图像}" );
src = imread( samples::findFile( parser.get<String>( "@input" ) ), IMREAD_COLOR );
  if (src.empty())
  {
std::cout << "无法打开或找到图像！\n" << std::endl;
std::cout << "用法：" << argv[0] << " <输入图像>" << std::endl;
    return EXIT_FAILURE;
  }
 
namedWindow( window_name, WINDOW_AUTOSIZE ); // 创建窗口
 
createTrackbar("算子：\n 0：开运算 - 1：闭运算 \n 2：形态梯度 - 3：顶帽 \n 4：黑帽", window_name, &morph_operator, max_operator, Morphology_Operations );
 
createTrackbar( "结构元素：\n 0：矩形 - 1：十字形 - 2：椭圆形", window_name,
&morph_elem, max_elem,
Morphology_Operations );
 
createTrackbar( "核大小：\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* )
{
  // 因为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 );
}