Java Code Examples for org.opencv.core.Mat#mul()

The following examples show how to use org.opencv.core.Mat#mul() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: FeatureWeight.java    From OptimizedImageEnhance with MIT License 6 votes vote down vote up 
public static Mat LocalContrast(Mat img) {
	double[] h = { 1.0 / 16.0, 4.0 / 16.0, 6.0 / 16.0, 4.0 / 16.0, 1.0 / 16.0 };
	Mat mask = new Mat(h.length, h.length, img.type());
	for (int i = 0; i < h.length; i++) {
		for (int j = 0; j < h.length; j++) {
			mask.put(i, j, h[i] * h[j]);
		}
	}
	Mat localContrast = new Mat();
	Imgproc.filter2D(img, localContrast, img.depth(), mask);
	for (int i = 0; i < localContrast.rows(); i++) {
		for (int j = 0; j < localContrast.cols(); j++) {
			if (localContrast.get(i, j)[0] > Math.PI / 2.75) localContrast.put(i, j, Math.PI / 2.75);
		}
	}
	Core.subtract(img, localContrast, localContrast);
	return localContrast.mul(localContrast);
}
Example 2
Source File: WeightCalculate.java    From ImageEnhanceViaFusion with MIT License 6 votes vote down vote up 
public static Mat LocalContrast(Mat img) {
	double[] h = { 1.0 / 16.0, 4.0 / 16.0, 6.0 / 16.0, 4.0 / 16.0, 1.0 / 16.0 };
	Mat mask = new Mat(h.length, h.length, img.type());
	for (int i = 0; i < h.length; i++) {
		for (int j = 0; j < h.length; j++) {
			mask.put(i, j, h[i] * h[j]);
		}
	}
	Mat localContrast = new Mat();
	Imgproc.filter2D(img, localContrast, img.depth(), mask);
	for (int i = 0; i < localContrast.rows(); i++) {
		for (int j = 0; j < localContrast.cols(); j++) {
			if (localContrast.get(i, j)[0] > Math.PI / 2.75)
				localContrast.put(i, j, Math.PI / 2.75);
		}
	}
	Core.subtract(img, localContrast, localContrast);
	return localContrast.mul(localContrast);
}