Re: help me on image filtering
On 7/23, in comp.soft-sys.ptolemy, Paul.Shumacher wrote:
Hi,
I am new to Ptolemy so please forgive me if this question has been
raised already.
I am interested in doing various operations on 2-D images/frames. For
example, using a
1-D FIR filter to smooth or find edges. I have tried the ImageSequence
actor followed
by MatrixToSequence or ImagePartition, but I get the following error:
Conversion is not supported from ptolemy.data.IntToken '3' to the type
[int].
I am using Ptolemy II 3.0. Any suggestions?
Well, you could use the new JAIEdgeDetection actor to do this,
there is a test at
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII3.0/ptII3.0-beta/ptolemy/actor/lib/jai/demo/test/JAIEdgeDetection.xml
If you install Ptolemy II 3.0 under Windows with the built in
JRE, the Java Advanced Imaging API will be included in the JRE.
If you are building from source, you would need to install
the Java Advanced Imaging API and rerun configure
cd $PTII
rm config.*; ./configure
cd ptolemy/actor/lib/jai
make
If you start up Ptolemy II 3.0 and do File - Open URL
and cut and paste the above URL in, the model will open for you.
You will need to change the JAIImageReader fileOrURL path
to an image on your local disk.
When you run the image, edge detection will occur.
The actors you refer to are part of the Vector Quantization
actors in sdf/lib/vq. These actors are somewhat special purpose, see
the sdf/demo/HTVQ/HTVQ.xml demo for an example use.
You should be able to create a model that has
ImageSequence - ImagePartition - ImageDisplay
1. ImageSequence reads in a series of images and outputs
IntMatrices.
If you use it, you may need to change the imageURLTemplate
from
/ptolemy/domains/sdf/lib/vq/data/seq/missa/missa***.qcf
to
ptolemy/domains/sdf/lib/vq/data/seq/missa/missa***.qcf
(I fixed this in the release and development trees)
2. ImagePartition reads in IntegerMatrices, not integers, so this could
be part of the problem in your example
Change the partitionColumns to 88 and
the partitionRows to 72
3. Add a SDFDirector and set the iterations to 100
When you run it, the ImageDisplay should pop up.
You may need to mouse on the ImageDisplay actor to get it to display
each frame.
I think the problem you were having with
ImageSequence - MatrixToSequence - ImagePartition
is that ImagePartition expects an IntMatrix, not a sequence of
Integers.
You could do
ImageSequence -
MatrixToSequence - Quantizer - Round
-SequenceToMatrix - ImageDisplay
1. ImageSequence needs the imageURLTemplate adjusted as per above.
2. In MatrixToSequence and SequenceToMatrix, set the rows to 144
and the columns to 176
4. Change the Quantizer to {-1.0, 40.0} to Quantize the values
-Christopher
Christopher Hylands Brooks [EMAIL PROTECTED] University of California
Programmer/Analyst Chess/Ptolemy/GSRC US Mail: 558 Cory Hall #1770
ph: 510.643.9841 fax:510.642.2739 Berkeley, CA 94720-1770
home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 (office: 400A Cory)
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
Re: [Ptolemy] Re: The ID PI is undefined. in Ptolemy II 3.0-beta ...
Yes, this is a bug in the code generator that shipped with the beta.
It is likely that the final release will include a fix that allows
constants (like PI) to be dealt with
correctly.
Note that for other reasons, the Butterfly demo will not generate usable
code. (Because the
plotter uses parts of Ptolemy II that are not initialized or understood by
the code generator).
This is also something I'm working on, but it is unlikely that a fix will
be included in the release.
Steve
At 04:04 PM 8/18/2003 -0700, Christopher Hylands Brooks wrote:
Sorry for the delay in getting back to you on this, I was
away on vacation
On 8/02, in comp.soft-sys.ptolemy, [EMAIL PROTECTED] (Long-Bao) wrote:
Hi, everyone:
I've encounterd the following exception
when I used code generator (for Java)
with the Demo Butterfly (or something else)
in SDF Domain:
Soot started on Sat Aug 02 21:58:46 CST 2003
WatchDogTimer.internalTransform(wjtp.watchDog, {time=60,
cancel=false})
ModelTransformer.internalTransform(wjtp.mt,
{targetPackage=ptolemy.copernicus.java.cg.Butterfly})
ModelTransformer: Creating actor class
ptolemy.copernicus.java.cg.Butterfly.CGRamp
for actor .Butterfly.Ramp
based on ptolemy.actor.lib.Ramp
ptolemy.kernel.util.IllegalActionException: The ID PI is undefined.
at
ptolemy.copernicus.java.DataUtilities$ActorCodeGenerationScope.getType(DataUtilities.java:366)
at
ptolemy.data.expr.ParseTreeTypeInference._getTypeForName(ParseTreeTypeInference.java:495)
at
ptolemy.data.expr.ParseTreeTypeInference.visitLeafNode(ParseTreeTypeInference.java:303)
at ptolemy.data.expr.ASTPtLeafNode.visit(ASTPtLeafNode.java:115)
at
ptolemy.data.expr.ParseTreeTypeInference._inferChild(ParseTreeTypeInference.java:536)
at
ptolemy.data.expr.ParseTreeTypeInference._inferAllChildren(ParseTreeTypeInference.java:519)
at
ptolemy.data.expr.ParseTreeTypeInference.visitProductNode(ParseTreeTypeInference.java:400)
at
ptolemy.data.expr.ASTPtProductNode.visit(ASTPtProductNode.java:124)
at
ptolemy.data.expr.ParseTreeTypeInference.inferTypes(ParseTreeTypeInference.java:78)
at
ptolemy.copernicus.java.ParseTreeCodeGenerator.generateCode(ParseTreeCodeGenerator.java:74)
at
ptolemy.copernicus.java.DataUtilities.generateExpressionCodeBefore(DataUtilities.java:184)
at
ptolemy.copernicus.java.ModelTransformer.computeAttributesBefore(ModelTransformer.java:185)
at
ptolemy.copernicus.java.GenericAtomicActorCreator.createAtomicActor(GenericAtomicActorCreator.java:196)
at
ptolemy.copernicus.java.ModelTransformer._createActorsIn(ModelTransformer.java:1462)
at
ptolemy.copernicus.java.ModelTransformer._createCompositeActor(ModelTransformer.java:1493)
at
ptolemy.copernicus.java.ModelTransformer.internalTransform(ModelTransformer.java:914)
at soot.SceneTransformer.transform(SceneTransformer.java:46)
at soot.Pack.apply(Pack.java:79)
at soot.Main.run(Main.java:1649)
at
ptolemy.copernicus.kernel.KernelMain.generateCode(KernelMain.java:17
5)
at ptolemy.copernicus.java.Main.main(Main.java:450)
Code generation of
'jar:file:/C:/Ptolemy/Ptolemy_II_3.0-beta/ptolemy/domain
s/sdf/demo/demo.jar!/ptolemy/domains/sdf/demo/Butterfly/Butterfly.xml'
failed:
java.lang.RuntimeException:
ptolemy.kernel.util.IllegalActionException: The ID PI is undefined.
at
ptolemy.copernicus.java.DataUtilities.generateExpressionCodeBefore(DataUtilities.java:188)
at
ptolemy.copernicus.java.ModelTransformer.computeAttributesBefore(ModelTransformer.java:185)
at
ptolemy.copernicus.java.GenericAtomicActorCreator.createAtomicActor(GenericAtomicActorCreator.java:196)
at
ptolemy.copernicus.java.ModelTransformer._createActorsIn(ModelTransformer.java:1462)
at
ptolemy.copernicus.java.ModelTransformer._createCompositeActor(ModelTransformer.java:1493)
at
ptolemy.copernicus.java.ModelTransformer.internalTransform(ModelTransformer.java:914)
at soot.SceneTransformer.transform(SceneTransformer.java:46)
at soot.Pack.apply(Pack.java:79)
at soot.Main.run(Main.java:1649)
at
ptolemy.copernicus.kernel.KernelMain.generateCode(KernelMain.java:175)
at ptolemy.copernicus.java.Main.main(Main.java:450)
WARNING: Default charset MS950 not supported, using ISO-8859-1 instead
All Done.
Have anyone met the same problem as me ??
Or I've done something wrong??
I'm using Ptolemy II Windows executable file that includes JVM
on Windows XP Professional SP1 and Compaq Presario 1500.
How to overcome it???
Thans a lot!!!
Long-Bao
I see the same problem in Ptolemy 3.0-beta in the Windows prebuilt
executable and in a 3.0-beta binary built from scratch.
I think the problem is the Expression actor. Generating code for
