<br>David,<br><br>Yes, but that will imply to modify the UnaryFunctorImageFilter<br>and penalize all of its derived classes with an "if" that may<br>or may not get used.<br><br>A potential way to implement this could be to have in the <br>
ThreadedGenerateData() method, two separate loops,<br>one that expects a mask and another that do not expects<br>a mask. In that way, you can avoid penalizing all uses of<br>the filter.<br><br>Please give it a try at modifying the loop and feel free<br>
to submit a patch to Gerrit.<br><br><br> Thanks<br><br><br> Luis<br><br><br>-----------------------------------------------------------<br><div class="gmail_quote">On Sun, Oct 24, 2010 at 6:35 PM, David Doria <span dir="ltr"><<a href="mailto:daviddoria@gmail.com">daviddoria@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div>Instead of applying a Functor to EVERY pixel using UnaryFunctorImageFilter, is there a way to pass it (or something else) a mask to tell it only to apply the function on the masked pixels?</div>
<div><br></div><div>I often find myself doing:</div>
<div><br></div><div><div> while(!imageIterator.IsAtEnd())</div><div> {</div><div> // If the pixel is not enabled in the mask, skip it</div><div> if(imageIterator.Get() == 0)</div><div> {</div><div> output->SetPixel(imageIterator.GetIndex(), 0);</div>
<div> continue;</div><div> }</div><div><br></div><div> PixelType value = MyFunctor(imageIterator.GetIndex());</div><div> ....</div><div><br>
</div><div> output->SetPixel(imageIterator.GetIndex(), value);</div><div> ++imageIterator;</div><div> }</div></div><div><br></div>Thanks,<br><font color="#888888"><br>
David<br>
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