<div dir="ltr">Hi Hana,<div><br></div><div>Are you referring to the parameter array type used in the image registration framework ?</div><div><br></div><div>If so, nope, the parameters type doesn't provide an addition operator.</div>
<div><br></div><div>This is by design, because the parameters are not necessarily elements of a vector space.</div><div><br></div><div><br></div><div>Consider for example, the case of the Versors (Unit Quaternions), where the addition of</div>
<div>elements is not equivalent to the addition (or composition) of two Quaternions. The same</div><div>will apply to the Affine matrices (the addition of elements is not equivalent to the composition</div><div>of two matrices).</div>
<div><br></div><div><br></div><div> Hope this helps,</div><div><br></div><div><br></div><div> Thanks</div><div><br></div><div><br></div><div> Luis</div><div><br></div></div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Mon, Feb 3, 2014 at 1:24 AM, Hana Cherif <span dir="ltr"><<a href="mailto:hanacherif62@gmail.com" target="_blank">hanacherif62@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>Hello ,, <br><br><span lang="en"><span>Can I do</span> <span>the sum of two</span> <span>objects of type</span> <b><span>parameterstype</span></b><span><b> </b>in ITK?</span></span><br>
<br></div>Thanks!!<br></div>
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