[Insight-users] Gatens Label Object Representation and Manipulation

Christian Werner christian.werner at rwth-aachen.de
Sun Feb 28 09:38:01 EST 2010 

Hello!

Thanks for your reply. The itk:: prefix indeed helped me getting a few 
lines further. Now I get errors when I want to instantiate a 
LabelToRGBImageType. I have attached my little program. Its simple 
purpose is to do some thresholding and then display all ojects in color 
and save the resulting file. It would be nice if you could help me here.

The following errors all come from the very last line in the code before 
everything else is commented out.


/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h: In 
constructor ‘itk::Functor::LabelToRGBFunctor<TLabel, 
TRGBPixel>::LabelToRGBFunctor() [with TLabel = unsigned int, TRGBPixel = 
unsigned char]’:                           
/home/christian/programming/itk/labeling/itkLabelMapToRGBImageFilter.cxx:42:   
instantiated from ‘void itk::LabelMapToRGBImageFilter<TInputImage, 
TOutputImage>::BeforeThreadedGenerateData() [with TInputImage = 
itk::LabelMap<itk::ShapeLabelObject<unsigned int, 2u> >, TOutputImage = 
itk::Image<unsigned char, 2u>]’                                        
/home/christian/programming/itk/labeling/testITK.cxx:75:   instantiated 
from here                                    
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:51: error: 
‘unsigned char’ is not a class, struct, or union type
/home/christian/programming/itk/labeling/itkLabelMapToRGBImageFilter.cxx:42:   
instantiated from ‘void itk::LabelMapToRGBImageFilter<TInputImage, 
TOutputImage>::BeforeThreadedGenerateData() [with TInputImage = 
itk::LabelMap<itk::ShapeLabelObject<unsigned int, 2u> >, TOutputImage = 
itk::Image<unsigned char, 2u>]’
/home/christian/programming/itk/labeling/testITK.cxx:75:   instantiated 
from here
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:98: error: 
request for member ‘Fill’ in ‘((itk::Functor::LabelToRGBFunctor<unsigned 
int, unsigned char>*)this)->itk::Functor::LabelToRGBFunctor<unsigned 
int, unsigned char>::m_BackgroundColor’, which is of non-class type 
‘unsigned char’
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:98: error: 
‘unsigned char’ is not a class, struct, or union type
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:50: 
warning: unused variable ‘rgbPixel’
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h: In member 
function ‘void itk::Functor::LabelToRGBFunctor<TLabel, 
TRGBPixel>::AddColor(unsigned char, unsigned char, unsigned char) [with 
TLabel = unsigned int, TRGBPixel = unsigned char]’:
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:65:   
instantiated from ‘itk::Functor::LabelToRGBFunctor<TLabel, 
TRGBPixel>::LabelToRGBFunctor() [with TLabel = unsigned int, TRGBPixel = 
unsigned char]’
/home/christian/programming/itk/labeling/itkLabelMapToRGBImageFilter.cxx:42:   
instantiated from ‘void itk::LabelMapToRGBImageFilter<TInputImage, 
TOutputImage>::BeforeThreadedGenerateData() [with TInputImage = 
itk::LabelMap<itk::ShapeLabelObject<unsigned int, 2u> >, TOutputImage = 
itk::Image<unsigned char, 2u>]’
/home/christian/programming/itk/labeling/testITK.cxx:75:   instantiated 
from here
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:118: 
error: ‘unsigned char’ is not a class, struct, or union type
/opt/InsightToolkit-3.16.0/Code/Review/itkLabelToRGBFunctor.h:122: 
error: request for member ‘Set’ in ‘rgbPixel’, which is of non-class 
type ‘unsigned char’




Gaëtan Lehmann wrote:
>
> Le 27 févr. 10 à 22:59, Christian Werner a écrit :
>
>> Hi!
>>
>> Yes, USE_REVIEW is on I am sure about that since I already built some 
>> libraries. I am using Debian Lenny and gcc 4.4.3. But maybe it is 
>> only because I misunderstand something.
>>
>> I see that I need label objects anyway, so it does not harm if I 
>> include them in my own code. But I was really confused about getting 
>> errors when just including a single header. Shouldn't this header 
>> take care of his own dependencies?
>>
>> Anyway, these 3 lines are the very beginning of my labeling try and 
>> these already produce errors:
>>
>> typedef itk::Image< unsigned char,  2 >   InputImageType;
>> ...
>> 56  typedef ShapeLabelObject<unsigned char, 2> LabelObjectType;
>> 57  typedef LabelMap< LabelObjectType >        LabelMapType;
>
> shouldn't you add the itk:: prefix to those typedefs?
>
>  typedef itk::ShapeLabelObject<unsigned char, 2> LabelObjectType;
>  typedef LabelMap< LabelObjectType >        LabelMapType;
>
> a few other notes:
>
> * you may be careful about the type used to store the labels - 
> unsigned char is likely to become quickly unable to store all the 
> labels in your image
> * when using ShapeLabelObject, it is convenient to use 
> BinaryImageToShapeLabelMapFilter instead of 
> BinaryImageToLabelMapFilter: the attribute values are computed with a 
> single filter, and it can be declared simply as
>
>   typedef itk::BinaryImageToLabelMapFilter<InputImageType> 
> ImageToLabelType;
>
> without much type declaration.
>
> Gaëtan
>
>> 58  typedef itk::BinaryImageToLabelMapFilter<InputImageType, 
>> LabelMapType> ImageToLabelType;
>> 59  //2)
>> 60  ImageToLabelType::Pointer image2LabelMap = ImageToLabelType::New();
>>
>> Compiler Errors:
>> /home/christian/programming/itk/labeling/testITK.cxx: In function 
>> ‘int main(int, char**)’:
>> /home/christian/programming/itk/labeling/testITK.cxx:56: error: 
>> expected initializer before ‘<’ token
>> /home/christian/programming/itk/labeling/testITK.cxx:57: error: 
>> expected initializer before ‘<’ token
>> /home/christian/programming/itk/labeling/testITK.cxx:58: error: 
>> ‘LabelMapType’ was not declared in this scope
>> /home/christian/programming/itk/labeling/testITK.cxx:58: error: 
>> template argument 2 is invalid
>> /home/christian/programming/itk/labeling/testITK.cxx:58: error: 
>> invalid type in declaration before ‘;’ token
>> /home/christian/programming/itk/labeling/testITK.cxx:60: error: 
>> expected initializer before ‘image2LabelMap’
>>
>> Maybe I don't get this labeling right... ?
>>
>> This is what I include now:
>>
>> #include "itkImageToImageFilter.h"
>> #include "itkShapeLabelObject.h"
>> #include "itkLabelMap.h"
>> #include "itkBinaryImageToLabelMapFilter.h"
>> #include "itkLabelMapToRGBImageFilter.h"
>>
>>
>>
>> Bill Lorensen wrote:
>>> When you configured ITK did you build with USE_REVIEW ON?
>>>
>>> If so, what platform/compiler are you using?
>>>
>>> Bill
>>>
>>> On Sat, Feb 27, 2010 at 2:24 PM, Christian Werner
>>> <christian.werner at rwth-aachen.de> wrote:
>>>
>>>> Hello!
>>>>
>>>> I am off to make some serious object labling and manipulation. 
>>>> Unfortunately
>>>> some very basic code does not compile:
>>>>
>>>> #include "itkBinaryImageToLabelMapFilter.h"
>>>> int main( int argc, char * argv[] )
>>>> {
>>>> }
>>>>
>>>> christian at trinity:~/programming/itk/labeling/bin$ make -j2
>>>> Scanning dependencies of target testITK
>>>> [100%] Building CXX object CMakeFiles/testITK.dir/testITK.o
>>>> In file included from
>>>> /home/christian/programming/itk/labeling/testITK.cxx:2:
>>>> /opt/InsightToolkit-3.16.0/Code/Review/itkBinaryImageToLabelMapFilter.h:54: 
>>>>
>>>> error: expected type-specifier before ‘LabelMap’
>>>> /opt/InsightToolkit-3.16.0/Code/Review/itkBinaryImageToLabelMapFilter.h:54: 
>>>>
>>>> error: expected ‘>’ before ‘LabelMap’
>>>> make[2]: *** [CMakeFiles/testITK.dir/testITK.o] Error 1
>>>> make[1]: *** [CMakeFiles/testITK.dir/all] Error 2
>>>> make: *** [all] Error 2
>>>>
>>>> I can fix this, when I edit (and this already feels bad) the
>>>> itkBinaryImageToLabelMapFilter.h by adding
>>>>
>>>> #include "itkLabelMap.h"
>>>> #include "itkLabelObject.h"
>>>>
>>>> The above code compiles this way. However if I actually use some 
>>>> functions
>>>> out of the itkBinaryImageToLabelMapFilter.h I get errors over errors.
>>>>
>>>> My CMakeLists looks like this:
>>>>
>>>> cmake_minimum_required(VERSION 2.4)
>>>>
>>>> PROJECT(testITK)
>>>>
>>>> FIND_PACKAGE(ITK REQUIRED)
>>>> IF(ITK_FOUND)
>>>> INCLUDE(${ITK_USE_FILE})
>>>> ENDIF(ITK_FOUND)
>>>>
>>>> ADD_EXECUTABLE(testITK testITK.cxx)
>>>>
>>>> TARGET_LINK_LIBRARIES(testITK ITKCommon ITKIO ITKBasicFilters 
>>>> ITKStatistics)
>>>>
>>>>
>>>> General ITK programming works without trouble. I must be doing 
>>>> something
>>>> totally wrong, any suggestions?
>>>>
>>>>
>>>> Best regards,
>>>> Christian
>>>>
>>>>
>>>> _____________________________________
>>>> 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
>>>>
>>>>
>>
>> _____________________________________
>> 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
>

-------------- next part --------------
A non-text attachment was scrubbed...
Name: testITK.cxx
Type: text/x-c++src
Size: 2529 bytes
Desc: not available
URL: <http://www.itk.org/pipermail/insight-users/attachments/20100228/4819347d/attachment.cxx>

More information about the Insight-users mailing list