Volumertric painting is possible or not

[lassoan (Andras Lasso)]

You can volume render an RGB or RGBA volume as well. In this case the provided color and opacity values are used (they are not computed from a single scalar with transfer functions).

Color (RGB) volume rendering

In recent Slicer Preview Releases, color volume rendering has been made much easier to access. While previously an alpha channel had to be created manually for rendering color RGB volumes, now the alpha channel is created automatically (from the luminance of the image). To render an RGB volume, just load the image stack and drag-and-drop the volume from the Data module to a 3D view (or use Volume Rendering module). When a color volume is loaded then “Scalar Color Mapping” section is not display…