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

[Bill Lorensen]

What colors do you see with your current settings?

On Mon, Oct 5, 2009 at 9:34 AM, Gururajan.R <gururajan.r at raster.in> wrote:
>
> real bone, vessels , blood  these are the colour should be applied to
> relevant parts of the image.
>
> thanks
> guru
> Bill Lorensen wrote:
>> 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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>
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