104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/**
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* @file Morphology_1.cpp
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* @brief Erosion and Dilation sample code
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* @author OpenCV team
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*/
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#include "opencv2/imgproc.hpp"
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#include "opencv2/imgcodecs.hpp"
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#include "opencv2/highgui.hpp"
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using namespace cv;
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/// Global variables
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Mat src, erosion_dst, dilation_dst;
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int erosion_elem = 0;
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int erosion_size = 0;
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int dilation_elem = 0;
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int dilation_size = 0;
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int const max_elem = 2;
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int const max_kernel_size = 21;
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/** Function Headers */
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void Erosion( int, void* );
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void Dilation( int, void* );
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/**
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* @function main
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*/
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int main( int, char** argv )
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{
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/// Load an image
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src = imread( argv[1], IMREAD_COLOR );
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if( src.empty() )
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{ return -1; }
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/// Create windows
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namedWindow( "Erosion Demo", WINDOW_AUTOSIZE );
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namedWindow( "Dilation Demo", WINDOW_AUTOSIZE );
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moveWindow( "Dilation Demo", src.cols, 0 );
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/// Create Erosion Trackbar
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createTrackbar( "Element:\n 0: Rect \n 1: Cross \n 2: Ellipse", "Erosion Demo",
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&erosion_elem, max_elem,
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Erosion );
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createTrackbar( "Kernel size:\n 2n +1", "Erosion Demo",
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&erosion_size, max_kernel_size,
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Erosion );
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/// Create Dilation Trackbar
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createTrackbar( "Element:\n 0: Rect \n 1: Cross \n 2: Ellipse", "Dilation Demo",
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&dilation_elem, max_elem,
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Dilation );
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createTrackbar( "Kernel size:\n 2n +1", "Dilation Demo",
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&dilation_size, max_kernel_size,
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Dilation );
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/// Default start
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Erosion( 0, 0 );
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Dilation( 0, 0 );
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waitKey(0);
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return 0;
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}
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/**
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* @function Erosion
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*/
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void Erosion( int, void* )
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{
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int erosion_type = 0;
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if( erosion_elem == 0 ){ erosion_type = MORPH_RECT; }
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else if( erosion_elem == 1 ){ erosion_type = MORPH_CROSS; }
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else if( erosion_elem == 2) { erosion_type = MORPH_ELLIPSE; }
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Mat element = getStructuringElement( erosion_type,
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Size( 2*erosion_size + 1, 2*erosion_size+1 ),
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Point( erosion_size, erosion_size ) );
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/// Apply the erosion operation
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erode( src, erosion_dst, element );
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imshow( "Erosion Demo", erosion_dst );
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}
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/**
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* @function Dilation
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*/
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void Dilation( int, void* )
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{
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int dilation_type = 0;
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if( dilation_elem == 0 ){ dilation_type = MORPH_RECT; }
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else if( dilation_elem == 1 ){ dilation_type = MORPH_CROSS; }
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else if( dilation_elem == 2) { dilation_type = MORPH_ELLIPSE; }
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Mat element = getStructuringElement( dilation_type,
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Size( 2*dilation_size + 1, 2*dilation_size+1 ),
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Point( dilation_size, dilation_size ) );
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/// Apply the dilation operation
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dilate( src, dilation_dst, element );
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imshow( "Dilation Demo", dilation_dst );
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}
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