<font size="2"><font face="verdana,sans-serif">This is a wrong approach for what you are trying to accomplish.<br></font></font><div><font class="Apple-style-span" face="verdana, sans-serif"><br></font></div><div><font class="Apple-style-span" face="verdana, sans-serif"><a href="http://en.wikipedia.org/wiki/Content-based_image_retrieval">http://en.wikipedia.org/wiki/Content-based_image_retrieval</a></font></div>
<div><a href="http://scholar.google.com/scholar?q=image+similarity+retrieval&hl=en&as_sdt=0&as_vis=1&oi=scholart">http://scholar.google.com/scholar?q=image+similarity+retrieval&hl=en&as_sdt=0&as_vis=1&oi=scholart</a></div>
<div><br></div><div>This is an active research area, and the problem is inherently hard.</div><div><br></div><div>Regards,</div><div>Dženan</div><div><font class="Apple-style-span" face="verdana, sans-serif"><br></font><div class="gmail_quote">
On Tue, Aug 16, 2011 at 23:21, Agustin Conde Martin <span dir="ltr"><<a href="mailto:a.conde409@uniandes.edu.co">a.conde409@uniandes.edu.co</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hello everyone<div><br></div><div>I'm new to the registration topic with ITK and I would like to know if it is possible with ITK to be able to conclude if 2 images are similar or not? In the attached zip file you will find a short code and the images I want to compare. The code is taken from the registration section of "ITK Software Guide" and it compares 2 input images using CenteredSimilarity2DTransform (because I want it to be scale, translation and rotation invariant) and MeanSquaresImageToImageMetric. At the end of the code, the metrics and the other transformations values are printed on the screen. I have compared square.png with square1, square2 and square3 (which are very similar), and I have also compared square.png with other (NOT similar) images such as circle, lady, triangle, etc and from the values (metric value) printed in both cases I'm not sure if I can conclude that an image is or is not similar to another one. I made some research and I found out that ITK only offers intensity-based recognition algorithms rather than feature-based. As you can see, my images are like gestures and I think the comparison won't work using intensity-based algorithms. So what do you recommend me to do for comparing my images? Is there any feature-based implementation in ITK or VTK? Or do I have to write from scratch an algorithm for this? Thanks in advance.</div>
<div><br></div><div>Best regards,</div><div><br></div><div>Agustín Conde Martín</div>
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