hypermedia.video
Class Blob

java.lang.Object
  hypermedia.video.Blob

public class Blob
extends java.lang.Object

A storage object containing a blob detected by OpenCV. Returned by blobs() method.

See Also:

OpenCV.blobs( int, int, int, boolean ), OpenCV.blobs( int, int, int, boolean, int )

Field Summary

float	area The area of the blob in pixels
java.awt.Point	centroid The centroid or barycenter of the blob
boolean	isHole Is this blob a hole inside of another blob?
float	length The length of the perimeter in pixels
int[]	pixels A list of color int, containing the image pixels created by loadPixels()
java.awt.Point[]	points The list of points defining the shape of the blob
java.awt.Rectangle	rectangle The containing rectangle of the blob

Constructor Summary

protected	Blob() Create a new Blob with the default properties.
protected	Blob(float area, float length, java.awt.Point centroid, java.awt.Rectangle rect, java.awt.Point[] points, boolean isHole) Create a new Blob with the given properties.

Method Summary

processing.core.PImage	image() Returns blob's image as PImage.
void	loadPixels() Generates an image from the current blob shape, using the current frame for pixel content.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

area

public float area

The area of the blob in pixels

length

public float length

The length of the perimeter in pixels

centroid

public java.awt.Point centroid

The centroid or barycenter of the blob

rectangle

public java.awt.Rectangle rectangle

The containing rectangle of the blob

points

public java.awt.Point[] points

The list of points defining the shape of the blob

isHole

public boolean isHole

Is this blob a hole inside of another blob?

pixels

public int[] pixels

A list of color int, containing the image pixels created by loadPixels()

See Also:

loadPixels()

Constructor Detail

Blob

protected Blob()

Create a new Blob with the default properties.

Blob

protected Blob(float area,
               float length,
               java.awt.Point centroid,
               java.awt.Rectangle rect,
               java.awt.Point[] points,
               boolean isHole)

Create a new Blob with the given properties.

Parameters:

area - the shape area

length - the contour length

centroid - the shape barycentre point

rect - the shape rectangle

points - the contour points

isHole - true whether this blob is completly inside a bigger one

Method Detail

loadPixels

public void loadPixels()

Generates an image from the current blob shape, using the current frame for pixel content. After the loadPixels() call, pixels can by accessed via the pixels variable.

This method should be called directly after the blob detection process to retrieve the correct data values.

! NOT YET IMPLEMENTED

See Also:

pixels

image

public processing.core.PImage image()

Returns blob's image as PImage.

! NOT IMPLEMENTED YET

Returns:

PImage