[slicer-users] Single DICOm file - Volume loading

Ron Kikinis kikinis at bwh.harvard.edu
Fri Jun 3 10:31:48 EDT 2011


Hi,

I tried to follow the spirit of Steves recommendation. By using crop 
volume to crop and downsample, and then doing some simple things in the 
editor such as island removal, save island and closing (dilation and 
erosion combo), I got an STL file of 104mb.

Ron

On 6/3/11 8:53 AM, Steve Pieper wrote:
> Hi Mitch -
>
> Sounds like good progress - definitely there are many ways to make
> smaller models.  Here are a few things that come to mind:
>
> - You can use the Resample Volume module to reduce the size of the input volume
>
> - You may have a lot of internal structure that you don't want in the
> model (like isolated dots of noise).  You can use the Remove Islands
> tool in the Editor to clean these up.  Or you can use one of the tools
> in Filters->Denoising to reduce the noise before segmenting.
>
> - You can adjust the parameters on the Model Maker (rather than using
> the defaults built into the Editor)
>
> - You can use the Surface Toolbox to post-process the models (apply
> further smoothing/decimation).
>
> Hopefully one or more of those will work for you.  STL is a very
> verbose ascii format, so even if the file is big, it may not be so
> large when loaded into your FEA app.
>
> Good luck,
> Steve
>
>
> On Fri, Jun 3, 2011 at 8:31 AM, mitchcud<mitchcud at hotmail.com>  wrote:
>> Steve,
>>
>> I've upgraded my PC (now w/16GB RAM&  64bit OS), I've managed to get a 3D
>> model up and running but the outputted STL file is absolutely enormous,
>> around 6.5GB...is that what you got when you assembled the model?
>>
>> Is there any way to optimise (or tidy them up) these files? I'm exporting to
>> a 32 bit FEA software so I'll be limited with the RAM I can play around
>> with!
>>
>> Thanks
>>
>> --
>> View this message in context: http://slicer-users.65878.n3.nabble.com/Single-DICOm-file-Volume-loading-tp2974519p3019439.html
>> Sent from the slicer-users mailing list archive at Nabble.com.
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-- 
Ron Kikinis, M.D.,
Robert Greenes Distinguished Director of Biomedical Informatics
Professor of Radiology, Harvard Medical School
Director, Surgical Planning Laboratory
http://www.spl.harvard.edu/~kikinis
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