simeav.filtros.instanciaciones.PreprocesadorEstandar.java Source code

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Here is the source code for simeav.filtros.instanciaciones.PreprocesadorEstandar.java

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package simeav.filtros.instanciaciones;

import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.imgproc.Imgproc;
import simeav.filtros.Preprocesador;

/**
 *
 * @author Nacha
 */
public class PreprocesadorEstandar extends Preprocesador {

    @Override
    public Mat preprocesar(Mat original, int umbral) {
        Mat resultado = redimensionar(original);
        resultado = umbralar(resultado, umbral);
        return resultado;
    }

    private Mat redimensionar(Mat original) {
        Size orig = original.size();
        if (orig.height > 1200 && orig.width > 1500) {
            double tamX, tamY;
            double relX = orig.width / 800;
            double relY = orig.height / 600;
            if (orig.width / orig.height > 800 / 600) {
                tamX = 800;
                tamY = orig.height / relX;
            } else {
                tamX = orig.width / relY;
                tamY = 600;
            }
            Mat resultado = new Mat();
            Imgproc.resize(original, resultado, new Size(tamX, tamY));
            return resultado;
        }
        return original;
    }

    private Mat umbralar(Mat original, int umbral) {
        Mat imGrises = new Mat();
        Mat bw = new Mat();
        Imgproc.cvtColor(original, imGrises, Imgproc.COLOR_BGR2GRAY);
        Imgproc.GaussianBlur(imGrises, bw, new Size(1, 1), 0);
        Imgproc.threshold(bw, bw, umbral, 250, Imgproc.THRESH_BINARY);
        Imgproc.cvtColor(bw, bw, Imgproc.COLOR_GRAY2RGB);
        return bw;
    }

}