Get average of a set of images with WritableRaster

       

import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;

public class Main {
  static BufferedImage average(BufferedImage[] images) {
    BufferedImage average = new BufferedImage(images[0].getWidth(), images[0].getHeight(),
        BufferedImage.TYPE_BYTE_GRAY);
    WritableRaster raster = average.getRaster().createCompatibleWritableRaster();
    for (int k = 0; k < images[0].getHeight(); ++k) {
      for (int j = 0; j < images[0].getWidth(); ++j) {
        float sum = 0.0f;
        for (int i = 0; i < images.length; ++i) {
          sum = sum + images[i].getRaster().getSample(j, k, 0);
        }
        raster.setSample(j, k, 0, Math.round(sum / images.length));
      }
    }
    average.setData(raster);
    return average;
  }
}

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Get average of a set of images with WritableRaster : BufferedImage « 2D Graphics GUI « Java

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