Class: OpenCV::CvHuMoments

Inherits:
Object
  • Object
show all
Defined in:
ext/opencv/cvhumoments.cpp,
ext/opencv/cvhumoments.cpp

Overview

Hu invariants

Instance Method Summary collapse

Constructor Details

#new(src_moments) ⇒ CvHuMoments

Calculates the seven Hu invariants

OpenCV function:

  • cvGetHuMoments

OpenCV function:

  • cvGetHuMoments

Parameters:

  • src_moments (CvMoment) —

    Input moments

See Also:



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# File 'ext/opencv/cvhumoments.cpp', line 43

VALUE
rb_initialize(VALUE self, VALUE src_moments)
{
  try {
    cvGetHuMoments(CVMOMENTS(src_moments), CVHUMOMENTS(self));
  }
  catch (cv::Exception& e) {
    raise_cverror(e);
  }
  return self;      
}

Instance Method Details

#hu1 ⇒ Number

Returns hu1 invariant

Returns:

  • (Number) —

    hu1 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 60

VALUE rb_hu1(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu1);
}

#hu2 ⇒ Number

Returns hu2 invariant

Returns:

  • (Number) —

    hu2 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 69

VALUE rb_hu2(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu2);
}

#hu3 ⇒ Number

Returns hu3 invariant

Returns:

  • (Number) —

    hu3 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 78

VALUE rb_hu3(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu3);
}

#hu4 ⇒ Number

Returns hu4 invariant

Returns:

  • (Number) —

    hu4 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 87

VALUE rb_hu4(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu4);
}

#hu5 ⇒ Number

Returns hu5 invariant

Returns:

  • (Number) —

    hu5 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 96

VALUE rb_hu5(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu5);
}

#hu6 ⇒ Number

Returns hu6 invariant

Returns:

  • (Number) —

    hu6 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 105

VALUE rb_hu6(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu6);
}

#hu7 ⇒ Number

Returns hu7 invariant

Returns:

  • (Number) —

    hu7 invariant



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# File 'ext/opencv/cvhumoments.cpp', line 114

VALUE rb_hu7(VALUE self) {
  return DBL2NUM(CVHUMOMENTS(self)->hu7);
}

#to_ary ⇒ Array<Number> Also known as: to_a

Returns hu invaliants as an Array

Returns:

  • (Array<Number>) —

    Hu invaliants



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# File 'ext/opencv/cvhumoments.cpp', line 123

VALUE
rb_to_ary(VALUE self)
{
  CvHuMoments *hu_moments = CVHUMOMENTS(self);
  return rb_ary_new3(7,
         rb_float_new(hu_moments->hu1),
         rb_float_new(hu_moments->hu2),
         rb_float_new(hu_moments->hu3),
         rb_float_new(hu_moments->hu4),
         rb_float_new(hu_moments->hu5),
         rb_float_new(hu_moments->hu6),
         rb_float_new(hu_moments->hu7));
}