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Well, according to their documentation you can calculate the moment using

Imgproc.moments(Mat array)

This returns a Moment type.

I have not used the Java API but after glancing through their documentation, the relative Java code is

List<Moments> contMoments = new ArrayList<Moments>();

// I made this a double instead of an int because of (1)
double sumOfMoments = 0, mass = 0;

for(int i = 0; i < contors.size(); ++i)
{
    Moments thisMoment = Improc.moments(contours[i]);
    sumOfMoments += thisMoment.get_m10();
    mass += thisMoment.get_m00();
    // (1) .get_m00() and .get_m10() both return doubles

    contMoments.add(thisMoment); // finally add it to your collection
}

Here's the moments class

Always refer to the documentation.

Happy coding,

Cheers :)

Well, according to their documentation you can calculate the moment using

Imgproc.moments(Mat array)

or

Imgproc.moments(Mat array, boolean binaryImage)

This returns a Moment type.

I have not used the Java API but after glancing through their documentation, the relative Java code is

List<Moments> contMoments = new ArrayList<Moments>();

// I made this a double instead of an int because of (1)
double sumOfMoments = 0, mass = 0;

for(int i = 0; i < contors.size(); ++i)
{
    Moments thisMoment = Improc.moments(contours[i]);
    sumOfMoments += thisMoment.get_m10();
    mass += thisMoment.get_m00();
    // (1) .get_m00() and .get_m10() both return doubles

    contMoments.add(thisMoment); // finally add it to your collection
}

Here's the moments class

Always refer to the documentation.

Happy coding,

Cheers :)