Hello Pierre-Yve,
I have the same concerns for this. So I'd be interested in a proper fix
- for now I just changed the MITK code to have no compression.
Also, importantly, note that when you save the project as a .mitk file -
there is another compression step which is also quite time consuming.
To remove that compression you need to replace line 403 (in 2014.03
verison) with:
zipper.addRecursive(tmpdir, Poco::Zip::ZipCommon::CL_SUPERFAST);
Rostislav.
On 16/07/2014 20:56, Pierre-Yves Menguy wrote:
Hello,
I want to discuss about another request : how about allowing the user
to enable or disable image compression when saving them? An option in
the General preference page would be perfect in my opinion. I dived
just enough to find where the switch should be located, not enough to
find all necessary changes.
Source of my request :
mitkImageWriter.cpp, function WriteByITK, Line 223 :
//use compression if available
imageIO->UseCompressionOn();
What I imagined :
// Check preferences if it has access to the Pref service ? Or
create an Get/Set-er in the class, thus making possible :
// imageIO->SetUseCompression( this->GetUseCompression() );
It takes a lot of time to compress my images, sometimes for little
gain (from 315 Mo to 297 Mo). Even when the compression is very
efficient (binary images, mostly : 150 Mo -> ~3 Mo), I would prefer to
use more disk space instead of CPU time (we have some computers with
low-end CPUs, but enough disk space).
Would it be feasible easily, or would it require a lot of time/changes ?
I don't understand fully how all parts of the workbench are loaded, if
there is a 'strict' order, so I don't have any idea of how much work
that it represents.
Also, is there anyone else interested ?
Regards,
Pierre-Yves Menguy.
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