[Insight-users] itkShapeLabelObject sorts object by size
Emma Ryan
eryanvtk at yahoo.com
Mon Aug 9 13:52:34 EDT 2010
Hello Anybody ????
Please advise.
Thank you,
Emma
Hello All,
I am using itk::ShapeLabelObject and it currently sorts the labels based on
the size of the object. Probably has an in-built call to
itk::relablComponentFilter that does that. Does anyone know how to turn off the
sorting. I would like the objects to be displayed as they come. Like in Matlab,
it based on Row and columns position of the object. Is it possible to do this ?
If so, please enlighten me as well.
Thank you,
Emma
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Today's Topics:
1. itkShapeLabelObject sorts object by size (Emma Ryan)
2. Re: Problem with passing images to functions (Sergio Vera)
3. What are the differences between GetLargestPossibleRegion and
GetRequestedRegion? (Guang Yang)
4. Re: FFTImageFilter (Ming Chao)
----------------------------------------------------------------------
Message: 1
Date: Sun, 8 Aug 2010 23:20:34 -0700 (PDT)
From: Emma Ryan <eryanvtk at yahoo.com>
Subject: [Insight-users] itkShapeLabelObject sorts object by size
To: insight-users at itk.org
Message-ID: <186154.78823.qm at web57905.mail.re3.yahoo.com>
Content-Type: text/plain; charset="us-ascii"
Hello All,
I am using itk::ShapeLabelObject and it currently sorts the labels based on
the size of the object. Probably has an in-built call to
itk::relablComponentFilter that does that. Does anyone know how to turn off the
sorting. I would like the objects to be displayed as they come. Like in Matlab,
it based on Row and columns position of the object. Is it possible to do this ?
If so, please enlighten me as well.
Thank you,
Emma
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Message: 2
Date: Mon, 9 Aug 2010 10:34:26 +0200
From: Sergio Vera <sergio.vera at alma3d.com>
Subject: Re: [Insight-users] Problem with passing images to functions
To: D?enan Zuki? <dzenanz at gmail.com>
Cc: insight-users at itk.org, habibbaluwala2010 <habibbaluwala at gmail.com>
Message-ID:
<AANLkTi=n2LpfFBOT4bbSsw3bP9NY8ML5oA0RFv309vSb at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Following advices from Luis Iba?ez in a previous mail of the list, we now
use the following rules:
const ITKImgType *ImgIn when images are input to a method and
ITKImgType::Pointer &ImgOut when the image will be created inside the
function
regards
2010/8/6 D?enan Zuki? <dzenanz at gmail.com>
> Use ImageType::Pointer. Here is an example:
>
> void calc2DJointHistogram(VisualizingImageType::Pointer x,
> VisualizingImageType::Pointer y, std::string savefilename)
> {
> ...
> }
>
> //calling it
> VisualizingImageType::Pointer lVis, hVis;
> ...
> hVis=hReader->GetOutput();
> calc2DJointHistogram(lVis, hVis, fnNoExt+"_LH.png");
>
> D?enan
>
> On Fri, Aug 6, 2010 at 15:32, habibbaluwala2010
<habibbaluwala at gmail.com>wrote:
>
>>
>> Hi Everyone,
>> I am a biot confused on how can i pass an image with smart
>> pointers to an outside function . I basically need this to avoid
>> reproducing
>> the code again and again and also to avoid composite filters. It would be
>> very helpful if you can provide an example which does the job!!! Anyways
>> looking forward to your replies.
>> --
>> View this message in context:
>>http://old.nabble.com/Problem-with-passing-images-to-functions-tp29356451p29356451.html
>>l
>> Sent from the ITK - Users mailing list archive at Nabble.com.
>>
>> _____________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Kitware offers ITK Training Courses, for more information visit:
>> http://www.kitware.com/products/protraining.html
>>
>> Please keep messages on-topic and check the ITK FAQ at:
>> http://www.itk.org/Wiki/ITK_FAQ
>>
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>
>
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
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>
--
Sergio Vera
Alma IT Systems
C/ Vilana, 4B, 4? 1?
08022 Barcelona
T. (+34) 932 380 592
www.alma3d.com
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Message: 3
Date: Mon, 9 Aug 2010 11:00:37 +0100
From: Guang Yang <samggyy at gmail.com>
Subject: [Insight-users] What are the differences between
GetLargestPossibleRegion and GetRequestedRegion?
To: insight-users at itk.org
Message-ID:
<AANLkTin7j=x55s2Gau6J1GAfmGjj1K0FwzMSozMEwwH=@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi there,
I am confusing about using GetLargestPossibleRegion() and
GetRequestedRegion(). What are the differences?
GetLargestPossibleRegion() is getting all the pixels in the image.
And GetRequestedRegion() is getting all the none-zero pixels. Is that right?
Cheers,
Aaron
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Message: 4
Date: Mon, 9 Aug 2010 08:02:43 -0500
From: Ming Chao <mingchao2005 at gmail.com>
Subject: Re: [Insight-users] FFTImageFilter
To: "Yu, Yang" <yang.yu at philips.com>
Cc: Insight Users <insight-users at itk.org>
Message-ID:
<AANLkTinMK6K-0OzxAn+Mx69_bAu1o+F5jSLGeq_6KV5i at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Thanks very much to you all for looking into my "problem". Actually you guys
were absolutely correct that there was no "problem" with the sample code. My
"problem" was created when I tried to write the output real/imaginary part
in a binary file. Sorry for the noise.
Ming
On Mon, Aug 9, 2010 at 3:31 AM, Yu, Yang <yang.yu at philips.com> wrote:
> I copy the code you posted and at least it works fine in my program. I
> think you should pay much attention on the realFilter part. Did you Update
> the realFilter?
>
>
>
> *From:* insight-users-bounces at itk.org [mailto:
> insight-users-bounces at itk.org] *On Behalf Of *Ming Chao
> *Sent:* 2010 Aug 05 7:21 PM
> *To:* Markus Neuner
> *Cc:* Insight Users
> *Subject:* Re: [Insight-users] FFTImageFilter
>
>
>
> If I changed "WriteImageType" to float/double, the code stopped working b/c
> jpeg only accepts unsigned char/int.
>
> On Thu, Aug 5, 2010 at 3:30 AM, Markus Neuner <neuner.markus at gmx.net>
> wrote:
>
> I just looked at the code in the example and all seems working (at leasts
> for me).
> What do you expect as output?
> Change the "WriteImageType" to float or double and try it again.
> Open the image with paraview, imagej or any other suited image viewer.
> It may be useful to take the log of the real and complex images for a
> better contrast.
>
>
>
> On 04.08.2010 21:45, Ming Chao wrote:
>
> float
>
> On Wed, Aug 4, 2010 at 2:38 PM, Markus Neuner <neuner.markus at gmx.net>
> wrote:
>
> What is the pixel type of "ImageType"?
>
>
>
> On 04.08.2010 21:11, Ming Chao wrote:
>
> I checked the complex image FFT created from the input image was fine.
> Also I checked the real and imaginary parts in floating point format,
> respectively. They both are fine. The problem started to happen when
> rescaling the real/imaginary image into an interger-type image. Here is part
> of the rescaling code:
>
>
>
> typedef unsigned char WritePixelType;
>
> typedef itk::Image< WritePixelType, Dimension > WriteImageType;
>
>
>
> typedef itk::RescaleIntensityImageFilter<ImageType, WriteImageType >
> RescaleFilterType;
>
>
>
> RescaleFilterType::Pointer intensityRescaler = RescaleFilterType::New();
>
> intensityRescaler->SetOutputMinimum( 0 );
>
> intensityRescaler->SetOutputMaximum( 255 );
>
>
>
> intensityRescaler->SetInput( realFilter->GetOutput() );
>
>
>
> typedef itk::ImageFileWriter< WriteImageType > WriterType;
>
> WriterType::Pointer writer = WriterType::New();
>
> writer->SetFileName( argv[2] );
>
> writer->SetInput( intensityRescaler->GetOutput() );
>
>
>
> try
>
> {
>
> writer->Update();
>
> }
>
> catch( itk::ExceptionObject & excp )
>
> {
>
> std::cerr << "Error writing the real image: " << std::endl;
>
> std::cerr << excp << std::endl;
>
> return EXIT_FAILURE;
>
> }
>
>
>
> typedef itk::ImageRegionConstIterator< WriteImageType >
> ConstIteratorType;
>
> WriteImageType::Pointer RealImage = intensityRescaler->GetOutput();
>
> ConstIteratorType in( RealImage, RealImage->GetRequestedRegion() );
>
>
>
> for ( in.GoToBegin(); !in.IsAtEnd(); ++in )
>
> {
>
> std::cout << in.Get() << std::endl;
>
> }
>
>
>
>
>
> From the output I got all zeros....Apparently something wrong with the
> rescaler. Could anybody take a look? Thanks very much,
>
>
>
> Ming
>
>
>
> On Wed, Aug 4, 2010 at 9:35 AM, Ming Chao <mingchao2005 at gmail.com> wrote:
>
> I tried to run FFTImageFilter.cxx to do an FFT of an image. The input image
> is a 512x512, 24 bit thoracic CT image in jpg format. The output of the
> example cxx code are the real and imaginary parts of FFT of the input image.
> However, when I look at the two output images, they are just uniformly
> grey/black, depending on
>
>
>
> intensityRescaler->SetOutputMinimum( 0 );
>
> intensityRescaler->SetOutputMaximum( 255 );
>
>
>
> in the code. What did I do wrong? Many thanks,
>
>
>
> Ming
>
>
>
>
>
>
>
> _____________________________________
>
> Powered by www.kitware.com
>
>
>
> Visit other Kitware open-source projects at
>
> http://www.kitware.com/opensource/opensource.html
>
>
>
> Kitware offers ITK Training Courses, for more information visit:
>
> http://www.kitware.com/products/protraining.html
>
>
>
> Please keep messages on-topic and check the ITK FAQ at:
>
> http://www.itk.org/Wiki/ITK_FAQ
>
>
>
> Follow this link to subscribe/unsubscribe:
>
> http://www.itk.org/mailman/listinfo/insight-users
>
>
>
>
>
>
>
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