[vtkusers] How to display the points in a greyscale range in other colors for DICOM series via vtkImageViewers

[Liu_tj]

Hi,fblupi,

At present our application only uses VTK. When vtkImageViewer2 is displayed, its vtkImageMapToWindowLevelColors has a default view. What I need is only the points falling in the specific greyscale range are displayed in other color, the other points keeps the old color. With your code, the vtkImageMapToWindowLevelColors will be changed and the points beyond the range will be displayed in dark.

I get one thought: get the original lookuptable of vtkImageMapToWindowLevelColors and change the RGB of the point whose density falls in the range. However, when I try to get the lookupTable by m_imageViewer.GetWindowLevel().GetLookupTable(), it returns null.

Thanks
Liu Peng

在2016-04-11，"fblupi" <fboli94 at gmail.com> 写道： -----原始邮件-----
发件人:"fblupi" <fboli94 at gmail.com>
发送时间:2016年04月11日 星期一
收件人:"vtkusers" <vtkusers at vtk.org>
主题:Re: [vtkusers] How to display the points in a greyscale range in other colors for DICOM series via vtkImageViewers

"Density" is a density value for a material of your volume (for example air
has around -1000, bone 400...).

The original grayscale puts darker colors for materials with lower values.
That's why you can see the air black.

I don't know the value in which the original grayscale turns from black to
gray. But you can use 3D Slicer to help you getting these values. With this
software you can load a serie of DICOM files and inspect them.



--
View this message in context: http://vtk.1045678.n5.nabble.com/How-to-display-the-points-in-a-greyscale-range-in-other-colors-for-DICOM-series-via-vtkImageViewers-tp5737603p5737606.html
Sent from the VTK - 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

Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ

Search the list archives at: http://markmail.org/search/?q=vtkusers

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/vtkusers
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtkusers/attachments/20160411/8554089d/attachment.html>