#pragma region Laplacian Sobel Filters


Mat LaplacianFilter(Mat img, int level){
	
	namedWindow("Original image", CV_WINDOW_AUTOSIZE);
	imshow("Original image", img);

	Mat gray,draw,draw2;

	cvtColor(img, gray, CV_RGB2GRAY);

	/// Apply Laplace function
	Laplacian(gray, draw, CV_16S, 3, 1, 0, BORDER_DEFAULT);
	convertScaleAbs(draw, draw2);

	imwrite("../../result.jpg", draw2);
	namedWindow("Result image", CV_WINDOW_AUTOSIZE);
	imshow("Result image", draw2);
	waitKey(0);

	destroyWindow("Result image");
	destroyWindow("Original image");

	return draw;
}

Mat SobelFilter(Mat img, int level){
	
	namedWindow("Original image", CV_WINDOW_AUTOSIZE);
	imshow("Original image", img);

	Mat grey;
	cvtColor(img, grey, CV_BGR2GRAY);

	Mat sobelx;
	Sobel(grey, sobelx, CV_32F, 1, 0);

	double minVal, maxVal;
	minMaxLoc(sobelx, &minVal, &maxVal); //find minimum and maximum intensities
	cout << "minVal : " << minVal << endl << "maxVal : " << maxVal << endl;

	Mat draw;
	sobelx.convertTo(draw, CV_8U, 255.0 / (maxVal - minVal), -minVal * 255.0 / (maxVal - minVal));

	imwrite("../../result.jpg", draw);
	namedWindow("Result image", CV_WINDOW_AUTOSIZE);
	imshow("Result image", draw);
	waitKey(0);

	destroyWindow("Result image");
	destroyWindow("Original image");

	return draw;
}

#pragma endregion

OpenCV Laplacian and Sobel Filters Implementation

CG - OpenCV Laplacian and Sobel Filters Implementation

c++

C++