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How to create a mirror image using Java OpenCV library?
To create a mirror image
Read the required image using ImageIO.read() method.
Get the height and width of the image.
Create an empty buffered image to store the result
Using nested for loops traverse through each pixel in the image.
Iterate the width of the image from right to left.
Get the pixel value using the getRGB() method.
Set the pixel values to the result image object using the setRGB() method, by replacing the new width values.
Example
import java.io.File;
import java.io.IOException;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class MirrorImage {
public static void main(String args[])throws IOException {
//Reading the image
File file= new File("D:\Images\tree.jpg");
BufferedImage img = ImageIO.read(file);
//Getting the height and with of the read image.
int height = img.getHeight();
int width = img.getWidth();
//Creating Buffered Image to store the output
BufferedImage res = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
for(int j = 0; j < height; j++){
for(int i = 0, w = width - 1; i < width; i++, w--){
int p = img.getRGB(i, j);
//set mirror image pixel value - both left and right
res.setRGB(w, j, p);
}
}
//Saving the modified image
file = new File("D:\Images\mirror_image.jpg");
ImageIO.write(res, "jpg", file);
System.out.println("Done...");
}
}Input
Output
Updated on: 09-Apr-2020
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