[Insight-users] the overflow of itk::AddImageFilter

[Quan]

hello everyone,
i got a problem when using AddImageFilter.I want to keep the pixel-wise=255 (for my 8-bits scale images),when the overflow happens ,but  the AddImageFilter's has such a description  
 Warning:
   No numeric overflow checking is performed in this filter. 
i add the segmented contour image(pixels on the contour = 255) and the original image.while i use the AddImageFilter,the overflow happens and i cannot get a meaningful outcome.  
how can i manage it,does any member function of this class provide any method that is responble to the overflow?

thanks in advance.

Quan



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20110524/79b8ea8c/attachment-0001.htm>