<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Hi Sam,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">the reason for inventing the optimizers is that exhaustive search takes too long for most application domains, including 3D images.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Regards,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Dženan</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 25, 2016 at 10:05 AM, wassim bouzeid <span dir="ltr"><<a href="mailto:abou_zeid_wassim@hotmail.com" target="_blank">abou_zeid_wassim@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">Hi Everyone,<br><br>I want to explore the domain of an image metric by exhaustive search (moving the second image with respect to the first image from a negative position to a positive position) so I am using the example in the source code MeanSquaresImageMetric1.cxx on 2D images. The time to compute the metric value for a specified parameters on these 2D images is approximately 0.02 sec. (PC with 32000 MB memory, and 1 cores @ 3201 MHz). <br><br>When I am applying this example to 3D nifti images, the computation time of the metric value is large (more than 5 sec.).<br><br>Does anyone know how to speed up the computation time on 3D images without using an optimizer?<br><br>Thanks in advance.<br><br>Best,<br>Sam<br><br> </div></div>
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