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Simple Moments class for Java
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@mshabunin
mshabunin committed Dec 16, 2015
1 parent 0d9938d commit 5ebc7f0
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244 changes: 244 additions & 0 deletions modules/imgproc/misc/java/src/java/imgproc+Moments.java
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package org.opencv.imgproc;

import java.lang.Math;

//javadoc:Moments
public class Moments {

public double m00;
public double m10;
public double m01;
public double m20;
public double m11;
public double m02;
public double m30;
public double m21;
public double m12;
public double m03;

public double mu20;
public double mu11;
public double mu02;
public double mu30;
public double mu21;
public double mu12;
public double mu03;

public double nu20;
public double nu11;
public double nu02;
public double nu30;
public double nu21;
public double nu12;
public double nu03;

public Moments(
double m00,
double m10,
double m01,
double m20,
double m11,
double m02,
double m30,
double m21,
double m12,
double m03)
{
this.m00 = m00;
this.m10 = m10;
this.m01 = m01;
this.m20 = m20;
this.m11 = m11;
this.m02 = m02;
this.m30 = m30;
this.m21 = m21;
this.m12 = m12;
this.m03 = m03;
this.completeState();
}

public Moments() {
this(0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}

public Moments(double[] vals) {
set(vals);
}

public void set(double[] vals) {
if (vals != null) {
m00 = vals.length > 0 ? (int) vals[0] : 0;
m10 = vals.length > 1 ? (int) vals[1] : 0;
m01 = vals.length > 2 ? (int) vals[2] : 0;
m20 = vals.length > 3 ? (int) vals[3] : 0;
m11 = vals.length > 4 ? (int) vals[4] : 0;
m02 = vals.length > 5 ? (int) vals[5] : 0;
m30 = vals.length > 6 ? (int) vals[6] : 0;
m21 = vals.length > 7 ? (int) vals[7] : 0;
m12 = vals.length > 8 ? (int) vals[8] : 0;
m03 = vals.length > 9 ? (int) vals[9] : 0;
this.completeState();
} else {
m00 = 0;
m10 = 0;
m01 = 0;
m20 = 0;
m11 = 0;
m02 = 0;
m30 = 0;
m21 = 0;
m12 = 0;
m03 = 0;
mu20 = 0;
mu11 = 0;
mu02 = 0;
mu30 = 0;
mu21 = 0;
mu12 = 0;
mu03 = 0;
nu20 = 0;
nu11 = 0;
nu02 = 0;
nu30 = 0;
nu21 = 0;
nu12 = 0;
nu03 = 0;
}
}

@Override
public String toString() {
return "Moments [ " +
"\n" +
"m00=" + m00 + ", " +
"\n" +
"m10=" + m10 + ", " +
"m01=" + m01 + ", " +
"\n" +
"m20=" + m20 + ", " +
"m11=" + m11 + ", " +
"m02=" + m02 + ", " +
"\n" +
"m30=" + m30 + ", " +
"m21=" + m21 + ", " +
"m12=" + m12 + ", " +
"m03=" + m03 + ", " +
"\n" +
"mu20=" + mu20 + ", " +
"mu11=" + mu11 + ", " +
"mu02=" + mu02 + ", " +
"\n" +
"mu30=" + mu30 + ", " +
"mu21=" + mu21 + ", " +
"mu12=" + mu12 + ", " +
"mu03=" + mu03 + ", " +
"\n" +
"nu20=" + nu20 + ", " +
"nu11=" + nu11 + ", " +
"nu02=" + nu02 + ", " +
"\n" +
"nu30=" + nu30 + ", " +
"nu21=" + nu21 + ", " +
"nu12=" + nu12 + ", " +
"nu03=" + nu03 + ", " +
"\n]";
}

protected void completeState()
{
double cx = 0, cy = 0;
double mu20, mu11, mu02;
double inv_m00 = 0.0;

if( Math.abs(this.m00) > 0.00000001 )
{
inv_m00 = 1. / this.m00;
cx = this.m10 * inv_m00;
cy = this.m01 * inv_m00;
}

// mu20 = m20 - m10*cx
mu20 = this.m20 - this.m10 * cx;
// mu11 = m11 - m10*cy
mu11 = this.m11 - this.m10 * cy;
// mu02 = m02 - m01*cy
mu02 = this.m02 - this.m01 * cy;

this.mu20 = mu20;
this.mu11 = mu11;
this.mu02 = mu02;

// mu30 = m30 - cx*(3*mu20 + cx*m10)
this.mu30 = this.m30 - cx * (3 * mu20 + cx * this.m10);
mu11 += mu11;
// mu21 = m21 - cx*(2*mu11 + cx*m01) - cy*mu20
this.mu21 = this.m21 - cx * (mu11 + cx * this.m01) - cy * mu20;
// mu12 = m12 - cy*(2*mu11 + cy*m10) - cx*mu02
this.mu12 = this.m12 - cy * (mu11 + cy * this.m10) - cx * mu02;
// mu03 = m03 - cy*(3*mu02 + cy*m01)
this.mu03 = this.m03 - cy * (3 * mu02 + cy * this.m01);


double inv_sqrt_m00 = Math.sqrt(Math.abs(inv_m00));
double s2 = inv_m00*inv_m00, s3 = s2*inv_sqrt_m00;

this.nu20 = this.mu20*s2;
this.nu11 = this.mu11*s2;
this.nu02 = this.mu02*s2;
this.nu30 = this.mu30*s3;
this.nu21 = this.mu21*s3;
this.nu12 = this.mu12*s3;
this.nu03 = this.mu03*s3;

}

public double get_m00() { return this.m00; }
public double get_m10() { return this.m10; }
public double get_m01() { return this.m01; }
public double get_m20() { return this.m20; }
public double get_m11() { return this.m11; }
public double get_m02() { return this.m02; }
public double get_m30() { return this.m30; }
public double get_m21() { return this.m21; }
public double get_m12() { return this.m12; }
public double get_m03() { return this.m03; }
public double get_mu20() { return this.mu20; }
public double get_mu11() { return this.mu11; }
public double get_mu02() { return this.mu02; }
public double get_mu30() { return this.mu30; }
public double get_mu21() { return this.mu21; }
public double get_mu12() { return this.mu12; }
public double get_mu03() { return this.mu03; }
public double get_nu20() { return this.nu20; }
public double get_nu11() { return this.nu11; }
public double get_nu02() { return this.nu02; }
public double get_nu30() { return this.nu30; }
public double get_nu21() { return this.nu21; }
public double get_nu12() { return this.nu12; }
public double get_nu03() { return this.nu03; }

public void set_m00(double m00) { this.m00 = m00; }
public void set_m10(double m10) { this.m10 = m10; }
public void set_m01(double m01) { this.m01 = m01; }
public void set_m20(double m20) { this.m20 = m20; }
public void set_m11(double m11) { this.m11 = m11; }
public void set_m02(double m02) { this.m02 = m02; }
public void set_m30(double m30) { this.m30 = m30; }
public void set_m21(double m21) { this.m21 = m21; }
public void set_m12(double m12) { this.m12 = m12; }
public void set_m03(double m03) { this.m03 = m03; }
public void set_mu20(double mu20) { this.mu20 = mu20; }
public void set_mu11(double mu11) { this.mu11 = mu11; }
public void set_mu02(double mu02) { this.mu02 = mu02; }
public void set_mu30(double mu30) { this.mu30 = mu30; }
public void set_mu21(double mu21) { this.mu21 = mu21; }
public void set_mu12(double mu12) { this.mu12 = mu12; }
public void set_mu03(double mu03) { this.mu03 = mu03; }
public void set_nu20(double nu20) { this.nu20 = nu20; }
public void set_nu11(double nu11) { this.nu11 = nu11; }
public void set_nu02(double nu02) { this.nu02 = nu02; }
public void set_nu30(double nu30) { this.nu30 = nu30; }
public void set_nu21(double nu21) { this.nu21 = nu21; }
public void set_nu12(double nu12) { this.nu12 = nu12; }
public void set_nu03(double nu03) { this.nu03 = nu03; }
}
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