Package org.ptolemy.opencv

Class ComputerVision

java.lang.Object

org.ptolemy.opencv.ComputerVision

public class ComputerVision
extends java.lang.Object

A set of OpenCV image filters. The parameters of the filter are:

• MinFaceSize: Minimum face size to be considered ( one side of a bounding square)
• MaxFaceSize: Maximum face size to be considered ( one side of a bounding square)

Since:

Ptolemy II 11.0

Version:

$Id$

Author:

Elizabeth Osyk, based on FaceRecognizer by Ilga Akkaya

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Yellow (cxh)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	ComputerVision.Blur	A filter that blurs the image.
class	ComputerVision.Dilate	A filter that dilates the image.
class	ComputerVision.Erode	A filter that erodes the image.
class	ComputerVision.FindContours	A filter that finds contours in the image.
class	ComputerVision.FindEdges	A filter that finds edges in an image.
class	ComputerVision.GaussianBlur	A filter that applies a gaussian blur to an image.
class	ComputerVision.Histogram	A class for creating a histogram from the image.
class	ComputerVision.MakeBGRA	A filter that converts the image to BGRA format (Blue Green Red Alpha).
class	ComputerVision.MakeGray	A filter that converts the image to grayscale.
class	ComputerVision.MakeHSV	A filter that converts the image to HSV (Hue, Saturation, and Value).
class	ComputerVision.MakeYUV	A filter that converts the image to YUV.
class	ComputerVision.MedianBlur	A filter that blurs the image.

Constructor Summary

Constructors

Constructor	Description
ComputerVision()	Construct an instance of ComputerVision and load OpenCV.

Method Summary

Modifier and Type	Method	Description
org.opencv.core.Mat	bufferedImage2Mat(java.awt.image.BufferedImage source)	Convert a BufferedImage object to OpenCV's Mat representation.
java.awt.image.BufferedImage	filter(java.awt.image.BufferedImage source, java.lang.String filterName)	Apply the specified filter to the source image.
java.awt.image.BufferedImage	mat2BufferedImage(org.opencv.core.Mat matrix)	Convert a Mat image into a BufferedImage.
void	setBlurSize(int blurSize)	Set the blur size.
void	setCannyThreshold(int threshold)	Set the canny edge detection threshold.
void	setErosionSize(int erosionSize)	Set the erosion size.
java.lang.String	toString()	Return a string description of the filter.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComputerVision

public ComputerVision()
               throws java.io.IOException

Construct an instance of ComputerVision and load OpenCV.

Throws:

java.io.IOException - If the shared library cannot be loaded.

Method Detail

filter

public java.awt.image.BufferedImage filter(java.awt.image.BufferedImage source,
                                           java.lang.String filterName)
                                    throws IllegalActionException

Apply the specified filter to the source image.

Parameters:

source - The source image to transform.

filterName - The name of the filter.

Returns:

The transformed image.

Throws:

IllegalActionException - If no filter is found or there is a problem filtering.

bufferedImage2Mat

public org.opencv.core.Mat bufferedImage2Mat(java.awt.image.BufferedImage source)

Convert a BufferedImage object to OpenCV's Mat representation.

Parameters:

source - BufferedImage input

Returns:

Mat matrix

mat2BufferedImage

public java.awt.image.BufferedImage mat2BufferedImage(org.opencv.core.Mat matrix)

Convert a Mat image into a BufferedImage.

Parameters:

matrix - Mat input

Returns:

BufferedImage output

setBlurSize

public void setBlurSize(int blurSize)

Set the blur size. 1 to 25.

Parameters:

blurSize - The new blur size.

setCannyThreshold

public void setCannyThreshold(int threshold)

Set the canny edge detection threshold. 10 to 150.

Parameters:

threshold - The new threshold

setErosionSize

public void setErosionSize(int erosionSize)

Set the erosion size. 0 to 21.

Parameters:

erosionSize - The new erosion size.

toString

public java.lang.String toString()

Return a string description of the filter.

Overrides:

toString in class java.lang.Object

Returns:

The string "ComputerVisionFilter".