mirror of
https://github.com/ruby-opencv/ruby-opencv
synced 2023-03-27 23:22:12 -04:00
08a9655dc1
Added IplImage#smoothness that returns :smooth, :messy, or :blank. Rake compile will now compile the C extension code.
133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
/************************************************************
|
|
|
|
cvhumoments.cpp -
|
|
|
|
$Author: ser1zw $
|
|
|
|
Copyright (C) 2011 ser1zw
|
|
|
|
************************************************************/
|
|
#include "cvhumoments.h"
|
|
|
|
/*
|
|
* Document-class: OpenCV::CvHuMoments
|
|
*
|
|
* moments
|
|
*/
|
|
__NAMESPACE_BEGIN_OPENCV
|
|
__NAMESPACE_BEGIN_CVHUMOMENTS
|
|
|
|
#define DEFINE_CVHUMOMENTS_GETTER(elem) \
|
|
rb_define_method(rb_klass, #elem, RUBY_METHOD_FUNC(rb_##elem), 0)
|
|
|
|
#define CVHUMOMENTS_GETTER(elem) \
|
|
VALUE rb_##elem(VALUE self) { return DBL2NUM(CVHUMOMENTS(self)->elem); }
|
|
|
|
VALUE rb_klass;
|
|
|
|
VALUE
|
|
rb_class()
|
|
{
|
|
return rb_klass;
|
|
}
|
|
|
|
void
|
|
define_ruby_class()
|
|
{
|
|
if (rb_klass)
|
|
return;
|
|
/*
|
|
* opencv = rb_define_module("OpenCV");
|
|
*
|
|
* note: this comment is used by rdoc.
|
|
*/
|
|
VALUE opencv = rb_module_opencv();
|
|
|
|
rb_klass = rb_define_class_under(opencv, "CvHuMoments", rb_cObject);
|
|
rb_define_alloc_func(rb_klass, rb_allocate);
|
|
rb_define_private_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), 1);
|
|
rb_define_method(rb_klass, "to_ary", RUBY_METHOD_FUNC(rb_to_ary), 0);
|
|
rb_define_alias(rb_klass, "to_a", "to_ary");
|
|
|
|
DEFINE_CVHUMOMENTS_GETTER(hu1);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu2);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu3);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu4);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu5);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu6);
|
|
DEFINE_CVHUMOMENTS_GETTER(hu7);
|
|
}
|
|
|
|
VALUE
|
|
rb_allocate(VALUE klass)
|
|
{
|
|
CvHuMoments *ptr;
|
|
return Data_Make_Struct(klass, CvHuMoments, 0, -1, ptr);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* CvHuMoments.new(<i>src_moments</i>)
|
|
*
|
|
* Calculates the seven Hu invariants.
|
|
* <i>src_moments</i> The input moments
|
|
*
|
|
* seven Hu invariants that are defined as:
|
|
* h1=η20+η02
|
|
* h2=(η20-η02)²+4η11²
|
|
* h3=(η30-3η12)²+ (3η21-η03)²
|
|
* h4=(η30+η12)²+ (η21+η03)²
|
|
* h5=(η30-3η12)(η30+η12)[(η30+η12)²-3(η21+η03)²]+(3η21-η03)(η21+η03)[3(η30+η12)²-(η21+η03)²]
|
|
* h6=(η20-η02)[(η30+η12)²- (η21+η03)²]+4η11(η30+η12)(η21+η03)
|
|
* h7=(3η21-η03)(η21+η03)[3(η30+η12)²-(η21+η03)²]-(η30-3η12)(η21+η03)[3(η30+η12)²-(η21+η03)²]
|
|
* where ηi,j are normalized central moments of 2-nd and 3-rd orders. The computed values are proved to be invariant to the image scaling, rotation, and reflection except the seventh one, whose sign is changed by reflection.
|
|
*/
|
|
VALUE
|
|
rb_initialize(VALUE self, VALUE src_moments)
|
|
{
|
|
if (rb_obj_is_kind_of(src_moments, cCvMoments::rb_class()))
|
|
cvGetHuMoments(CVMOMENTS(src_moments), CVHUMOMENTS(self));
|
|
else
|
|
rb_raise(rb_eTypeError, "argument 1 (src_moments) should be %s.",
|
|
rb_class2name(cCvMoments::rb_class()));
|
|
return self;
|
|
}
|
|
|
|
CVHUMOMENTS_GETTER(hu1);
|
|
CVHUMOMENTS_GETTER(hu2);
|
|
CVHUMOMENTS_GETTER(hu3);
|
|
CVHUMOMENTS_GETTER(hu4);
|
|
CVHUMOMENTS_GETTER(hu5);
|
|
CVHUMOMENTS_GETTER(hu6);
|
|
CVHUMOMENTS_GETTER(hu7);
|
|
|
|
/*
|
|
* call-seq:
|
|
* to_ary -> [hu1, hu2, ... ,hu7]
|
|
*
|
|
* Return values by Array.
|
|
*/
|
|
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));
|
|
}
|
|
|
|
VALUE
|
|
new_object(CvMoments *src_moments)
|
|
{
|
|
VALUE object = rb_allocate(rb_class());
|
|
cvGetHuMoments(src_moments, CVHUMOMENTS(object));
|
|
return object;
|
|
}
|
|
|
|
__NAMESPACE_END_CVHUMOMENTS
|
|
__NAMESPACE_END_OPENCV
|