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- /**
- * @file Sobel_Demo.cpp
- * @brief Sample code using Sobel and/orScharr OpenCV functions to make a simple Edge Detector
- * @author OpenCV team
- */
- #include "opencv2/imgproc/imgproc.hpp"
- #include "opencv2/highgui/highgui.hpp"
- #include <stdlib.h>
- #include <stdio.h>
- using namespace cv;
- /**
- * @function main
- */
- int main( int, char** argv )
- {
- Mat src, src_gray;
- Mat grad;
- const char* window_name = "Sobel Demo - Simple Edge Detector";
- int scale = 1;
- int delta = 0;
- int ddepth = CV_16S;
- /// Load an image
- src = imread( argv[1] );
- if( !src.data )
- { return -1; }
- GaussianBlur( src, src, Size(3,3), 0, 0, BORDER_DEFAULT );
- /// Convert it to gray
- cvtColor( src, src_gray, COLOR_RGB2GRAY );
- /// Create window
- //namedWindow( window_name, WINDOW_AUTOSIZE );
- /// Generate grad_x and grad_y
- Mat grad_x, grad_y;
- Mat abs_grad_x, abs_grad_y;
- /// Gradient X
- //Scharr( src_gray, grad_x, ddepth, 1, 0, scale, delta, BORDER_DEFAULT );
- Sobel( src_gray, grad_x, ddepth, 1, 0, 3, scale, delta, BORDER_DEFAULT );
- convertScaleAbs( grad_x, abs_grad_x );
- /// Gradient Y
- //Scharr( src_gray, grad_y, ddepth, 0, 1, scale, delta, BORDER_DEFAULT );
- Sobel( src_gray, grad_y, ddepth, 0, 1, 3, scale, delta, BORDER_DEFAULT );
- convertScaleAbs( grad_y, abs_grad_y );
- /// Total Gradient (approximate)
- addWeighted( abs_grad_x, 0.5, abs_grad_y, 0.5, 0, grad );
- imwrite( argv[2],grad );
- /*imshow( window_name, grad );*/
- waitKey(0);
- return 0;
- }
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