图像混合处理

h ( x ) = ( 1 − α ) f ( x ) + α g ( x )    α ∈ ( 0 , 1 ) h\left( x \right) =\left( 1-\alpha \right) f\left( x \right) +\alpha g\left( x \right) \,\, \alpha \in \left( 0,1 \right) h(x)=(1−α)f(x)+αg(x)α∈(0,1)

代码1：

import org.opencv.core.Core;

import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.highgui.HighGui;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;


//图像混合
public class ImageMixture {
	static {
		System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
		
	}
	public static void main(String[] args) {
		addWeightedFunction();
	}
	public static void addWeightedFunction() {
		Mat src1= Imgcodecs.imread("D:\\Eclipse\\Opencv\\pictures\\triangle.png");
		Mat src2=Imgcodecs.imread("D:\\Eclipse\\Opencv\\pictures\\circle.png");

		Mat image=new Mat();
		double alpha=0.5;
		Core.addWeighted(src1,1-alpha,src2,alpha,0.0,image);
		HighGui.imshow("图像混合", image);
		HighGui.waitKey(0);
		
	}
}

运行结果：

原因：

两张图片的像素大小不一致，而 C o r e . a d d W e i g h t e d ( ) Core.addWeighted() Core.addWeighted() 方法要求参与混合的图片尺寸要完全一致。

代码2：

import org.opencv.core.Core;

import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.highgui.HighGui;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;


//图像混合
public class ImageMixture {
	static {
		System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
		
	}
	public static void main(String[] args) {
		addWeightedFunction();
	}
	public static void addWeightedFunction() {
		Mat src1= Imgcodecs.imread("D:\\Eclipse\\Opencv\\pictures\\triangle.png");
		Mat src2=Imgcodecs.imread("D:\\Eclipse\\Opencv\\pictures\\circle.png");
		Imgproc.resize(src1, src1, new Size(300,291));
		Imgproc.resize(src2, src2, new Size(300,291));
		Mat image=new Mat();
		double alpha=0.5;
		Core.addWeighted(src1,1-alpha,src2,alpha,0.0,image);
		HighGui.imshow("图像混合", image);
		HighGui.waitKey(0);
		
	}
}

原图：