Hey David, this previous thread might help.<br><br><div class="gmail_quote">On Thu, Sep 15, 2011 at 4:10 PM, David Doria <span dir="ltr">&lt;<a href="mailto:daviddoria@gmail.com">daviddoria@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Say I want to apply something like a DerivativeImageFilter to an image, but only on the left half of the image. Is there something that you can do to tell a filter where to be applied? For example, set the &quot;BufferedRegion&quot; of the image or something like that before passing it to the filter? Or is the only way to do it to use a RegionOfInterestFilter before going to the DerivativeImageFilter?<div>

<br clear="all">Thanks,<br><font color="#888888"><br>David<br>
</font></div>
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