Moment

Child-classe, implements OpenCV's center of mass finding. More...

#include <Moment.h>

Inheritance diagram for Moment:

Public Member Functions
	Moment (const cv::String name)
	Constructor. More...
void	setAction (void *data)
	sets the output of the action More...
void *	getAction ()
	gets the output of the action More...
cv::Point *	getCenterOfMass ()
	gets the output of the action More...
void	showWindow ()
	shows the action to the user More...
Public Member Functions inherited from PipeLineAction
	PipeLineAction ()
	Default constructor.
	PipeLineAction (const cv::String name)
	Constructor. More...
void	hideWindow ()
	hides the action to the user More...
cv::String	getName ()
	gets the pipeline action name More...

Private Attributes
cv::Moments	m
	struct containing spatial moment
cv::Point	center
	vector containing all contour points
int	areaMax
	highest value of the trackbar
int	area
	current value of the trackbar, used as area filter

Additional Inherited Members
Protected Attributes inherited from PipeLineAction
cv::Mat	img
	Matrix which holds the image of the action.
bool	show
	Show action flag.
cv::String	name
	(screen)name of the pipeline action

Detailed Description

Child-classe, implements OpenCV's center of mass finding.

Constructor & Destructor Documentation

Moment()

Moment::Moment

(

const cv::String

name

)

Constructor.

Parameters

name	(screen)name of mask action

                                  : PipeLineAction(name)
{
    Moments m = Moments();
    Point center = Point(0, 0);
    area = 50;
    areaMax = 1000;
}

Member Function Documentation

setAction()

void Moment::setAction ( void *  data )

virtual

sets the output of the action

in this case: finding the center of mass at the first index of the vector. If the input vector is empty the center is placed out of sight.

Parameters

data	pointer to the input data, should be a vector with points

Implements PipeLineAction.

{
    vector<vector<Point>>* d = static_cast<vector<vector<Point>>*>(data);
    if (!d->empty()) {
        m = moments((*d)[(*d).size() - 1], false);
        center = Point(m.m10 / m.m00, m.m01 / m.m00);
    }
    else {
        center = Point(-10, -10);
    }
}

getAction()

void * Moment::getAction ( )

virtual

gets the output of the action

Returns

Point containing X and Y coordinats of the biggest contours center of mass

Reimplemented from PipeLineAction.

{
    return &center;
}

getCenterOfMass()

Point * Moment::getCenterOfMass

(

)

gets the output of the action

Returns

Point containing X and Y coordinats of the biggest contours center of mass

{
    return &center;
}

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showWindow()

void Moment::showWindow ( )

virtual

shows the action to the user

uses cv::imshow(). The name of the window is the name of the pipeline action. Trackbar is added to set the size of the approximation accuracy

Implements PipeLineAction.

{
    show = false;
}