Gray/Normalized/Binary

public interface ImageProcessor {
    public Image processImage(Image image);
}


import org.opencv.core.Mat;
import org.opencv.imgproc.Imgproc;

public class GrayScaleImg implements ImageProcessor{

    public Image processImage(Image imageToProcess){
        Mat grayImageMat = new Mat(imageToProcess.getSourceImage().getHeight(),
                imageToProcess.getSourceImage().getWidth(), Image.GRAY);
        Imgproc.cvtColor(imageToProcess.getImageDataMat(), grayImageMat, Imgproc.COLOR_RGB2GRAY);
        return imageToProcess.getImageFromMat(grayImageMat);
    }
}


import org.opencv.core.Core;
import org.opencv.core.Mat;

public class NormalizedImg implements ImageProcessor {

    public Image processImage(Image imageToProcess){
        Mat normalizedImageMat = new Mat(imageToProcess.getSourceImage().getHeight(),
                imageToProcess.getSourceImage().getWidth(), Image.GRAY);
        Core.normalize(imageToProcess.getImageDataMat(), normalizedImageMat, 0,
                255, Core.NORM_MINMAX, Image.GRAY);
        return imageToProcess.getImageFromMat(normalizedImageMat);

    }
}


import org.opencv.core.Mat;
import org.opencv.imgproc.Imgproc;

public class BinaryImg implements ImageProcessor{
    private static final int PIXEL_NEIGHBOURHOOD = 21;
    private static final int SUBTRACTED_FROM_MEAN = 3;

    public Image processImage(Image imageToProcess){
        Mat binaryImageMat = new Mat(imageToProcess.getSourceImage().getHeight(),
                imageToProcess.getSourceImage().getWidth(), Image.GRAY);
        Imgproc.adaptiveThreshold(imageToProcess.getImageDataMat(), binaryImageMat,
                255, Imgproc.ADAPTIVE_THRESH_GAUSSIAN_C, Imgproc.THRESH_BINARY,
                PIXEL_NEIGHBOURHOOD, SUBTRACTED_FROM_MEAN);//21 3
        return imageToProcess.getImageFromMat(binaryImageMat);

    }
}