Posted by
Joachim Wesner on
Apr 14, 2009; 8:36am
URL: http://imagej.273.s1.nabble.com/Image-IO-py-plugin-tp3692776p3692777.html
Hi Lothar,
did you resolve your problem? I actually encountered a similar situation
with a pair of plugins that read and write binary Zygo interferometer
files (.dat) (BTW anybody working ininterferometry and using ImageJ
and wanting to share stuff and knowledge?)
These files have quite a lot of extra info in the header that I want
to be retained or at least to be accessible after reading stuff and
probably
later write back the original or modified info (Should also be accessible
via a macro, at best)
I do this using the ImagePlus setProperty and getProperty methods,
you can in principle attach any named object (denoted a a key string)
to an ImagePlus, but if you want to read/write those from a macro too,
you need to restrict to strings. (From a macro, you can load a simple
class and read/write the properties through the added static method:
http://rsb.info.nih.gov/ij/plugins/imp-props.html)
However, in further processing, this info will be lost, i.e. not appear
in the result ImagePlus IIRC, so you have to take care to move the info you
want to the output ImagePlus!
Mit freundlichen Grüßen / Best regards
Joachim Wesner
Leica Microsystems CMS GmbH | GmbH mit Sitz in Wetzlar | Amtsgericht
Wetzlar HRB 2432
Geschäftsführer: Dr. Stefan Traeger | Dr. Wolf-Otto Reuter | Dr. David Roy
Martyr | Colin Davis
Lothar Leidner
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Hello,
thank you all for your help so far. I have now learned that there is no
permanent connection between a FileInfo object and the ImagePlus object.
In the meantime I've tried to solve the problem of communication between
the two classes B16Reader_ and B16Writer_, but without success. How can
I pass the Reader's FileInfo "fi" object to a (not yet existing) writer
object?
> Do you also see this problem with the imp.getOriginalFileInfo() method?
The implementation below did not work:
B16Reader:
imp.setFileInfo(fi);
B16Writer:
fi = imp.getOriginalFileInfo();
In that case even the number of pixels gets lost and the following error
code pops up:
java.io.IOException: ImageWriter: fi.pixels==null
I must admit I don't understand how the method setFileInfo should work.
As there is no FileInfo object located in the ImagePlus class field it
is not surprising for me that the information gets lost.
As I found that in the case of Sensicam images both header size and byte
order are always the same there is no longer any need to pass these data
from the reader to the writer class. So I can live with the plugin as it
is.
Thanks again
Lothar Leidner
--
===============================================
Lothar Leidner
Institute of Theoretical and Physical Chemistry
University of Tuebingen
Auf der Morgenstelle 18
D-72076 Tübingen
E-Mail:
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Phone: +49-7071-29-72651
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