[vtkusers] Writing text in an image

[David Doria]

On Fri, Jul 8, 2011 at 5:10 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Alexis,
>
> Take a look at vtkFreeTypeUtilities, it can render text into a
> vtkImageData.  You can use this to create a small vtkImageData for
> each piece of annotation you need, and then you can use vtkImageBlend
> to overlay these onto your image.  To control the positioning of each
> text block for the overlay, you will have to set the Extent of each
> one so that the extent starts at the position where you want that text
> block to appear in the main image.
>
>  - David


Here is an example:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageText

David
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