readnumber.ImageProcessor.java Source code

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Here is the source code for readnumber.ImageProcessor.java

Source

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package readnumber;

import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;

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

public class ImageProcessor {

    public BufferedImage toBufferedImage(Mat matrix) {
        int type = BufferedImage.TYPE_BYTE_GRAY;
        if (matrix.channels() > 1) {
            type = BufferedImage.TYPE_3BYTE_BGR;
        }
        int bufferSize = matrix.channels() * matrix.cols() * matrix.rows();
        byte[] buffer = new byte[bufferSize];
        matrix.get(0, 0, buffer); // get all the pixels
        BufferedImage image = new BufferedImage(matrix.cols(), matrix.rows(), type);
        final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
        System.arraycopy(buffer, 0, targetPixels, 0, buffer.length);
        return image;
    }

    public Mat blur(Mat input, int numberOfTimes) {
        Mat sourceImage = new Mat();
        Mat destImage = input.clone();
        for (int i = 0; i < numberOfTimes; i++) {
            sourceImage = destImage.clone();
            Imgproc.blur(sourceImage, destImage, new Size(3.0, 3.0));
        }
        return destImage;
    }

}