[kepler-dev] JAI actors
Nandita Mangal
nandita_mangal at yahoo.com
Fri Nov 25 21:08:44 PST 2005
Helllo Christopher,
Yes I agree with you and never knew Ptolemy had its own JAI actors developed .
I was adding the new actors as basic image manipulation line of actors for Kepler. Thanks for pointing it out.
I also think we shouldn't duplicate the basic image manipulation actors if Ptolemy already has developed them in JAI. I am thinking of adding now only few other specific actors such as ContourPlotter which can be used in my current/ other future projects.
thanks,
Nandita.
Christopher Brooks <cxh at eecs.berkeley.edu> wrote:
Hi Nandita,
How are these classes different from the JAI classes in ptolemy/actor/lib/jai?
AdaptiveMedian.java JAIDFT.java JAIPNMWriter.java
DoubleMatrixToJAI.java JAIDataConvert.java JAIPeriodicShift.java
ImageToJAI.java JAIEdgeDetection.java JAIPhase.java
JAIAffineTransform.java JAIIDCT.java JAIPolarToComplex.java
JAIBMPWriter.java JAIIDFT.java JAIRotate.java
JAIBandCombine.java JAIImageReader.java JAIScale.java
JAIBandSelect.java JAIImageToken.java JAITIFFWriter.java
JAIBorder.java JAIInvert.java JAIToDoubleMatrix.java
JAIBoxFilter.java JAIJPEGWriter.java JAITranslate.java
JAIConstant.java JAILog.java JAITranspose.java
JAIConvolve.java JAIMagnitude.java JAIWriter.java
JAICrop.java JAIMedianFilter.java SaltAndPepper.java
JAIDCT.java JAIPNGWriter.java
For example, there is JAITranslate.java in ptolemy/actor/lib/jai
and it looks like you are creating a similar actor?
If you would like, I could give you write access to the Ptolemy tree
and you could work there.
If you really need your own version of these actors, then perhaps the
class comment should state why the versions in ptolemy/actor/lib/jai
are not sufficient.
_Christopher
--------
mangal 05/11/25 14:11:58
Added: src/util ImageTranslate.java
Log:
Image Affine Transformation actor for translation
Revision Changes Path
1.1 kepler/src/util/ImageTranslate.java
Index: ImageTranslate.java
===================================================================
/** Image Translate is an image manipulation actor for translating
* based on the specified information.
*
* Copyright (c) 2004 The Regents of the University of California.
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
* FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
* PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY
* OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
* UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
package util;
import ptolemy.actor.TypedAtomicActor;
import ptolemy.actor.TypedIOPort;
import ptolemy.data.StringToken;
import ptolemy.kernel.CompositeEntity;
import ptolemy.kernel.util.*;
import ptolemy.data.type.BaseType;
import ptolemy.data.ObjectToken;
import ptolemy.data.AWTImageToken;
import ptolemy.data.expr.Parameter;
import ptolemy.data.expr.StringParameter;
import ptolemy.actor.parameters.PortParameter;
import ptolemy.data.*;
import java.awt.*;
import java.awt.image.*;
import java.net.*;
import javax.imageio.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.lang.Float;
//For JAI usage
import javax.media.jai.JAI;
import javax.media.jai.*;
import javax.media.jai.PlanarImage;
import java.awt.image.renderable.ParameterBlock;
import javax.media.jai.KernelJAI;
import javax.media.jai.InterpolationBicubic;
import javax.media.jai.InterpolationBicubic2;
/**
* ImageTranslate can be used to translate at the given
* X,Y translation co-ordinates.
@author Nandita Mangal
@version $Id: ImageTranslate.java,v 1.1 2005/11/02 00:21:52
@category.name Image Manipulation
*/
public class ImageTranslate extends TypedAtomicActor
{
/////////////////////////////////////////////////////////////////////
//
//// Parameters and Ports ///
/
/*
* The input image to be translated
*/
public TypedIOPort imgSrc;
/*
* The output manipulated image
*/
public TypedIOPort imgDest;
/*
* The translating coordinate X
*/
public PortParameter x_translation ;
/*
* The translating coordinate y
*/
public PortParameter y_translation ;
/*
* The type of interpolation for the
* above transformation.
*/
public StringParameter interpolationType ;
/**
* constructor for ImageCrop with the given container and name.
*
*@param container The container.
*@param name The name of this actor.
*@exception IllegalActionException If the actor cannot be containe
d
* by the proposed container.
*@exception NameDuplicationException If the container already has an
* actor with this name.
*/
public ImageTranslate(CompositeEntity container, String name)
throws
NameDuplicationException, IllegalActionException
{
super(container, name);
imgSrc = new TypedIOPort(this, "Source Image", true, false);
imgSrc.setTypeEquals(BaseType.OBJECT);
imgSrc.setMultiport(false);
imgDest = new TypedIOPort(this, "Dest Image", false, true);
imgDest.setTypeEquals(BaseType.OBJECT);
imgDest.setMultiport(false);
x_translation = new PortParameter(this,"X Translation");
x_translation.setExpression("50");
y_translation = new PortParameter(this,"Y Translation");
y_translation.setExpression("100");
interpolationType = new StringParameter(this,"InterpolationType"
);
interpolationType.setExpression("INTERPOLATION_NEAREST");
interpolationType.addChoice("INTERPOLATION_BILINEAR");
interpolationType.addChoice("INTERPOLATION_BICUBIC");
interpolationType.addChoice("INTERPOLATION_BICUBIC2");
}
/////////////////////////////////////////////////////////////////////
///
//// public methods //
//
/**
* The source image is retrieved from the input port of the actor
* and a JAI PlanarImage is created from the input image.
* After calculating, the cropped image's specifications such
* as width,height,Co-ordinates the image is cropped with the JAI.creat
e
* operator.
*@exception IllegalActionException If there is no director.
*/
public void fire()
throws IllegalActionException
{
super.fire();
PlanarImage input=null;
Object inputToken = imgSrc.get(0);
if(inputToken instanceof AWTImageToken)
{
Image src = (Image)((AWTImageToken)inputToken).getValue();
input= JAI.create("awtimage",src);
}
else if (inputToken instanceof ObjectToken)
{
input =(PlanarImage)((ObjectToken)inputToken).getValue();
}
x_translation.update();
y_translation.update();
Token t_x = x_translation.getToken();
Token t_y = y_translation.getToken();
String x_str="";
String y_str="";
if(t_x instanceof IntToken)
x_str= new String ( ((IntToken)t_x).intValue() + "");
else if(t_x instanceof DoubleToken)
x_str= new String ( ((DoubleToken)t_x).intValue() + "");
if(t_y instanceof IntToken)
y_str= new String ( ((IntToken)t_y).intValue() + "");
else if (t_y instanceof DoubleToken)
y_str= new String ( ((DoubleToken)t_y).intValue() + "");
float x_trans =Float.parseFloat(x_str);
float y_trans =Float.parseFloat(y_str);
String interpolation = interpolationType.stringValue();
Interpolation interp=null;
if(interpolation.equals("INTERPOLATION_NEAREST"))
interp = new InterpolationNearest();
else if(interpolation.equals("INTERPOLATION_BILINEAR"))
interp = new InterpolationBilinear();
else if(interpolation.equals("INTERPOLATION_BICUBIC"))
interp = new InterpolationBicubic(8);
else if(interpolation.equals("INTERPOLATION_BICUBIC2"))
interp = new InterpolationBicubic2(8);
// Create a ParameterBlock
ParameterBlock pb = new ParameterBlock();
pb.addSource(input); // The source image
pb.add((float)Math.max(x_trans, 0)); // The x translation
pb.add((float)Math.max(y_trans, 0)); // The y translation
pb.add(interp); // The interpolation
// Create the translate operation
PlanarImage output = JAI.create("translate", pb, null);
imgDest.broadcast(new ObjectToken(output));
}
/**
* Post fire the actor. Return false to indicate that the
* process has finished. If it returns true, the process will
* continue indefinitely.
*
*@return
*/
public boolean postfire()
{
return false;
}
/**
* Pre fire the actor.
* Calls the super class's prefire in case something is set there.
*
*@return
*@exception IllegalActionException
*/
public boolean prefire()
throws IllegalActionException
{
return super.prefire();
}
}
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