<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello Hila,<div><br></div><div>I'd use a different approach.</div><div><br></div><div>I would first use the ComposeImageFilter to join the set of input images into a single VectorImage.</div><div><br></div><div>Then I'd implement a UnaryFunctor to compute the 1-norm, or sum of the vector components. This wiki example may be of help on how it implement the functor:</div><div><br></div><div><a href="http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/UnaryFunctorImageFilter">http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/UnaryFunctorImageFilter</a></div><div><br></div><div><br><div><div><br></div><blockquote type="cite"><div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin-top: 0pt; margin-right: 0pt; margin-bottom: 0pt; margin-left: 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex; position: static; z-index: auto; "><div dir="ltr"><div dir="ltr"><div><div><div class="h5"><div style="font-style: normal; text-decoration: none; display: inline; font-weight: normal; "><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote style="margin-top: 0pt; margin-right: 0pt; margin-bottom: 0pt; margin-left: 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex; position: static; z-index: auto; " class="gmail_quote"><div dir="ltr"><div dir="ltr"><div><div style="font-style: normal; display: inline; font-weight: normal; text-decoration: none; "><div><div><div dir="ltr"><font class="Apple-style-span" color="#000000"><br></font><font class="Apple-style-span" face="Calibri" size="2">
output_val = it->Get() + output_val; //get values from each image and
insert in the output
image</font><br><font class="Apple-style-span" face="Calibri" size="2"> //
How do I forward the image's iterator from here
?????</font><br></div></div></div></div></div></div></div></blockquote></div></div></div></div></div></div></div></div></div></blockquote></div></div></blockquote></div><div><br></div><div>Perhaps this is what you want:</div><div><br></div><div> ++(*it);</div><div> </div><div>This dereferences, the std::list<constIteratorType>::iterator type to a constIteratorType type, where you can use the prefix increment operator.</div><div><br></div><div>Bra</div><div><br></div><br><div>
<span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">========================================================</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Bradley Lowekamp<span class="Apple-converted-space"> </span><span class="Apple-converted-space"> </span></font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Medical Science and Computing for</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Office of High Performance Computing and Communications</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">National Library of Medicine<span class="Apple-converted-space"> </span></font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><a href="mailto:blowekamp@mail.nih.gov">blowekamp@mail.nih.gov</a></font></p><br class="Apple-interchange-newline"></span></div></span><br class="Apple-interchange-newline">
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