Example usage for org.apache.commons.math3.analysis.function Sinc Sinc

Introduction

In this page you can find the example usage for org.apache.commons.math3.analysis.function Sinc Sinc.

Prototype

public Sinc() 

Source Link

Document

The sinc function, sin(x) / x .

Usage

From source file:com.thalespf.dip.DeblurringTest.java

private static Complex[] motionBlur(double[] degradation, int width, int height) {
    Complex[] complex = new Complex[width * height];

    double[] temp = new double[2 * width * height];

    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {

            double teta = Math.PI * ((x - width / 2) % width * A + (y - height / 2) % height * B);

            Sinc sinc = new Sinc();

            double real = Math.cos(teta) * sinc.value(teta) * T;
            double imaginary = Math.sin(teta) * sinc.value(teta) * T;

            Complex c = new Complex(real, imaginary);
            Complex cConj = c.conjugate();

            temp[2 * (x + y * width)] = cConj.getReal();
            temp[2 * (x + y * width) + 1] = cConj.getImaginary();
        }//from ww w  .  j a v  a 2  s  .c  o  m
    }

    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            int xTranslated = (x + width / 2) % width;
            int yTranslated = (y + height / 2) % height;

            double real = temp[2 * (yTranslated * width + xTranslated)];
            double imaginary = temp[2 * (yTranslated * width + xTranslated) + 1];

            degradation[2 * (x + y * width)] = real;
            degradation[2 * (x + y * width) + 1] = imaginary;

            Complex c = new Complex(real, imaginary);
            complex[y * width + x] = c;
        }
    }

    return complex;
}

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