Full Color Volume Rendering?

[keesh]

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Jarek,

 

I want to experiment with full color (RGB) volume rendering in ij-VTK.

As I started to modify/test the source code, I ran into an exception in VtkEncoder

(does not support RGB).

I do not seem to have the source code for this "io" package?

Would it be difficult to add support for RGB images into VtkEncoder?

I already made up a simple RGB test stack in Image/J and I'm motivated

to add RGB support into ij-VTK.

 

note to self

---

Try a late-based vtkImageData::GetNumberofScalarComponents test.

Try either applying no color transder function or a linear one on each channel.

 

******************************************
keesh
Software Development Engineer
(Alchemist of the Millennium)

 

Contact:
keesh@...
******************************************

 

Work Life Plan:
To improve the quality of life for all mankind through better pattern
recognition techniques.

 

Home Life Plan:
Married, but happy. Three bright beacons light my way.

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[Jarek Sacha-2]

keesh wrote:
> I want to experiment with full color (RGB) volume rendering in ij-VTK.
> As I started to modify/test the source code, I ran into an exception
> in VtkEncoder
> (does not support RGB).
> I do not seem to have the source code for this "io" package?
The source for the VtkEncoder is in the main ij-plugins (toolkit) module
since it is not dependent on VTK libraries.
> Would it be difficult to add support for RGB images into VtkEncoder?
It should not be difficult to add RGB support to VtkEncoder. It may be a
good idea to add RGB support to VtkDecoder too.
> I already made up a simple RGB test stack in Image/J and I'm motivated
> to add RGB support into ij-VTK.
You are very welcome to upgrade VtkEncoder (and VtkDecoder) to support
RGB images.

BTW: I just did a minor modifications to VtkEncoder to test if CVS
checkin works fine.

Jarek


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[shu gao]

Dear all,
   I am developing web service using VTK. I met some difficulties in
serializing /deserialing VTK objects. As an example,I modified Medical1.java
,which is in the VTK-Examples,as a application in server side.So the return
of the web service is class Medical1.I got an
Exception--java.io.NotserializableException:vtk.vtkLight.And I also found  
the other classes,such as vtkVolume16Reader,vtkContourFilter, and so on, all
seem not to be serialized.How do I
serialize /deserialze VTK objects? Any suggestion would be helpful and many
thanks in advance.

Kind regards,
Gao Shu

>From: "keesh" <keesh@...>
>To: <ij-plugins-users@...>
>Subject: [Ij-plugins-users] Full Color Volume Rendering?
>Date: Sun, 24 Sep 2006 17:17:17 -0500
>
>Jarek,
>
>I want to experiment with full color (RGB) volume rendering in ij-VTK.
>As I started to modify/test the source code, I ran into an exception in
>VtkEncoder
>(does not support RGB).
>I do not seem to have the source code for this "io" package?
>Would it be difficult to add support for RGB images into VtkEncoder?
>I already made up a simple RGB test stack in Image/J and I'm motivated
>to add RGB support into ij-VTK.
>
>note to self
>---
>Try a late-based vtkImageData::GetNumberofScalarComponents test.
>Try either applying no color transder function or a linear one on each
>channel.
>
>******************************************
>keesh
>Software Development Engineer
>(Alchemist of the Millennium)
>
>Contact:
>keesh@...
>******************************************
>
>Work Life Plan:
>To improve the quality of life for all mankind through better pattern
>recognition techniques.
>
>Home Life Plan:
>Married, but happy. Three bright beacons light my way.

>-------------------------------------------------------------------------
>Take Surveys. Earn Cash. Influence the Future of IT
>Join SourceForge.net's Techsay panel and you'll get the chance to share
>your
>opinions on IT & business topics through brief surveys -- and earn cash
>http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV


>_______________________________________________
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[Jarek Sacha-2]

shu gao wrote:
>   I am developing web service using VTK. I met some difficulties in
> serializing /deserialing VTK objects. As an example,I modified
> Medical1.java ,which is in the VTK-Examples,as a application in server
> side.So the return of the web service is class Medical1.I got an
> Exception--java.io.NotserializableException:vtk.vtkLight.And I also
> found  the other classes,such as vtkVolume16Reader,vtkContourFilter,
> and so on, all seem not to be serialized.How do I
> serialize /deserialze VTK objects? Any suggestion would be helpful and
> many thanks in advance.

I assume that you are trying to use standard Java binary serialization
that requires a class to implement Serializable interface. Most of the
classes in package vtk are auto generated by VTK build code. Only
vtk.vtkPanel and vtk.vtkCanvas have actual source code. If you want
binary serialization you may have to modify VTK build scripts and
rebuild VTK.

Another option is be to serialize to XML using libraries like XStream
(http://xstream.codehaus.org/) that can serialize almost any code
without need to implement Serializable interface. I am doing that in one
of my projects that uses ij-VTK and it works quite nice.

Jarek


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