[kepler-dev] Kepler Imaging

[Ilkay Altintas]

Dan,

This is great. Nandita was looking into ImageJ as well. It would be  
nice if you could work with Nandita to see how she can use the ImageJ  
actor you have for our ROADNet workflows. Maybe she can create some  
examples in the process.

-ilkay



On Nov 13, 2005, at 7:03 PM, Dan Higgins wrote:

> Hi All,
>
>     I just took a look at the Powerpoint file
> "presentationKeplerImaging.ppt" (by Nandita Mangal of SDSC) which can
> found in $KEPLER/docs/presentations/. It shows some nice imaging
> processing actors that I was unaware that anyone was creating!
>
>     What came to mind on seeing this presentation is that there are a
> number of similar imaging processing operatons that can be done with  
> the
> IJMacro actor and that I have never really documented these  
> capabilities
> in a way that other Kepler developers would appreciate or even know  
> about.
>
>     IJMacro is an extension of the the ImageJ actor. ImageJ is a
> Java-based image processing system from the NIH
> (http://rsb.info.nih.gov/ij/). I originally created the ImageJ actor
> just for displaying large map images created by GARP/ENM workflows.
> Using it for displaying images in Kepler was convenient because it  
> opens
> many different types of images and automatically scales the display to
> convenient sizes. The user can then interactively carry out a variety  
> of
> other image processing operations and then save the result. I also  
> added
> a plugin for displaying georeferenced ASCII grid files, since this
> wasn't supported by the native ImageJ code. But in addition to handling
> all sorts of image operations, and supporting plugins, ImageJ also has  
> a
> builtin macro language and a macro recorder. The IJMacro actor executes
> ImageJ macros. So a user can record some image processing macro with
> ImageJ, paste that macro into the macroString parameter of the IJMacro
> actor, and then have a Kepler actor that carries out some fairly  
> complex
> image processing actions.
>
>     Even though I was aware of this macro capability, I haven't really
> created many good examples. (I primarily used it to display ASCII grid
> files.) But I invite other developers who may be interested in
> operations ranging from image scaling and rotation to spatial FFTs and
> filters to consider the possible use of the IJMacro actor. If anyone is
> interested, feel free to contact me for further information.
>
> Dan Higggins
> NCEAS
>
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