[vtkusers] Real colours in 3D CT image(DICOM)

[Bill Lorensen]

What do you mean by realistic color?

On Mon, Oct 5, 2009 at 8:46 AM, Gururajan.R <gururajan.r at raster.in> wrote:
> Bill
>
>    Again very very kind to you,
>    After that also am not getting the realistic color for my image. plz
> have a lokk at below code.
>
>  Please suggest me, where exactly have to change.
>
> thank you so much for your kind help
>
> Thanks
> guru
>
>            vtkGeometryFilter  geovolumebone = new vtkGeometryFilter();
>                geovolumebone.SetInput(polyReader.GetOutput());
>                vtkPolyDataMapper  geobonemapper = new vtkPolyDataMapper();
>                geobonemapper.SetInput(geovolumebone.GetOutput());
>                geobonemapper.ScalarVisibilityOff();
>
>                vtkLODActor boneActor = new vtkLODActor();
>                boneActor.SetNumberOfCloudPoints(100000);
>                boneActor.SetMapper(geobonemapper);
>                boneActor.GetProperty().SetColor(0.75,0.75,0.75);
>                boneActor.GetProperty().SetOpacity(0.3);
>                boneActor.GetProperty().SetDiffuse(0.75);
>                boneActor.GetProperty().SetSpecular(0.75);
>
> Bill Lorensen wrote:
>> Opacity, Diffuse, and Specular have ranges from 0-1. Some of your
>> settings are > 1.0.
>>
>> Start out just by setting the diffuse color. Leave out all of the
>> other settings until you get a decent image. Then you can add specular
>> highlights later.
>>
>> On Sat, Oct 3, 2009 at 9:25 AM, Gururajan.R <gururajan.r at raster.in> wrote:
>>
>>> Bill
>>> very kind to your reply.
>>>
>>>
>>> i have included that too, to set scalar visibility in off. even i dint get the result, am wondering where i made mistake.
>>> if time permits you please have a look on below code
>>>
>>> Thanks
>>> Guru
>>>
>>>    //for skin and bone Diagram
>>>            //For setting Bone Colour
>>>                vtkGeometryFilter  geovolumebone = new vtkGeometryFilter();
>>>                geovolumebone.SetInput(polyReader.GetOutput());
>>>                vtkPolyDataMapper  geobonemapper = new vtkPolyDataMapper();
>>>                geobonemapper.SetInput(geovolumebone.GetOutput());
>>>                geobonemapper.ScalarVisibilityOff();
>>>                //vtkActor boneActor = new vtkActor();
>>>                vtkLODActor boneActor = new vtkLODActor();
>>>                boneActor.SetNumberOfCloudPoints(100000);
>>>                boneActor.SetMapper(geobonemapper);
>>>                //boneActor.GetProperty().SetColor(1, 0.4782, 0.2546);
>>>                boneActor.GetProperty().SetColor(1, 0, 0);
>>>                //boneActor.GetProperty().SetDiffuseColor(1, 1, .9412);
>>>                boneActor.GetProperty().SetSpecularPower(100);
>>>                boneActor.GetProperty().SetOpacity(1.5);
>>>                boneActor.GetProperty().SetDiffuse(1.75);
>>>                boneActor.GetProperty().SetSpecular(1.75);
>>>                //For setting Bone Colour
>>>
>>>            //For setting Skin Colour
>>>                vtkMarchingCubes skin = new vtkMarchingCubes();
>>>                skin.SetInput(dicomreader.GetOutput());
>>>                skin.SetValue(0, -300);
>>>                skin.ComputeNormalsOn();
>>> //
>>>                vtkGeometryFilter geovolumeSkin = new vtkGeometryFilter();
>>>                geovolumeSkin.SetInput(contour.GetOutput());
>>> //
>>>                vtkPolyDataMapper skinmapper = new vtkPolyDataMapper();
>>>                skinmapper.SetInput(geovolumeSkin.GetOutput());
>>>                skinmapper.ScalarVisibilityOff();
>>>
>>>
>>>                vtkLODActor actorskin = new vtkLODActor();
>>>                actorskin.SetNumberOfCloudPoints(100000);
>>>                actorskin.SetMapper(skinmapper);
>>>                //actorskin.GetProperty().SetColor(1, 0.547237, 0.319073);
>>>                actorskin.GetProperty().SetColor(0.94,0.58, 0.17);
>>>                actorskin.GetProperty().SetSpecularPower(100);
>>>                actorskin.GetProperty().SetOpacity( 3.3 );
>>>
>>> Bill Lorensen wrote:
>>>
>>>> Try adding:
>>>> geobonemapper->ScalarVisibilityOff();
>>>>
>>>> If scalar data exists for cells or points, the mapper will use that
>>>> data to color the actor. With ScalarVisibilityOff(), the mapper will
>>>> use the color in the property.
>>>>
>>>> On Sat, Oct 3, 2009 at 1:34 AM, Gururajan.R <gururajan.r at raster.in> wrote:
>>>>
>>>>
>>>>> Hi all,
>>>>>    As am a new in VTK. Please guide me how to bring real colors like
>>>>> (bone, blood & vessles) in 3d image, iam reading dicom series and
>>>>> converted into 3d format. using vtkLODActor, am colouring the image but
>>>>> its not a real color and  the whole image is in one color only.
>>>>>
>>>>> i want real color to be applied to the relevant parts in the 3d image .
>>>>>
>>>>> Please any one help me in this., i would be very thankful for your kind
>>>>> help.
>>>>>
>>>>>
>>>>> Regards
>>>>> Guru
>>>>>
>>>>>    vtkLODActor boneActor = new vtkLODActor();
>>>>>                boneActor.SetNumberOfCloudPoints(100000);
>>>>>                boneActor.SetMapper(geobonemapper);
>>>>>                //boneActor.GetProperty().SetColor(1, 0.4782, 0.2546);
>>>>>                boneActor.GetProperty().SetColor(1, 0.75, 0.5);
>>>>>                //boneActor.GetProperty().SetColor(1, 0.3, 0.3);
>>>>>
>>>>>
>>>>>                boneActor.GetProperty().SetOpacity(1.5);
>>>>>                boneActor.GetProperty().SetDiffuse(1.75);
>>>>>                boneActor.GetProperty().SetSpecular(1.75);
>>>>>                boneActor.GetProperty().SetSpecular(0.3);
>>>>>                boneActor.GetProperty().SetSpecularPower(20);
>>>>>                boneActor.GetProperty().SetOpacity( 3.3 );
>>>>>                boneActor.GetProperty().SetDiffuse(0.8);
>>>>>                boneActor.GetProperty().SetAmbient(2.2);
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>
>