I'm afraid I can't give very good concrete examples, but when I was doing some 2D tracking before in Fusion, I found it quite useful to resize the markers to be rectangular - eg. to carefully surround my region of interest, and eliminate any extra moving detail nearby that may be confusing the tracker.<br>
<br>This was a while ago and I wasn't tracking shots extensively, but I recall it helped in that case.<br><br>cheers<br><br>Matt<br><br><br><div class="gmail_quote">On Thu, Jul 21, 2011 at 3:10 AM, Sergey I. Sharybin <span dir="ltr"><<a href="mailto:g.ulairi@gmail.com">g.ulairi@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor="#FFFFFF" text="#000000">
<font size="-1"><font face="Tahoma">Hi everyone!<br>
<br>
It was got discussion today in #lbmv at <a href="http://irc.freenode.net" target="_blank">irc.freenode.net</a> related
on forcing pattern/search area be square.<br>
<br>
Main question: is non-square shape of marker useful in motion
tracking workflow?<br>
<br>
Some quick cases i could think could be solved just adding
offset to search area or by resizing this areas. But we've
checked some tracking applications and they allow to use
non-square markers. So</font></font><font size="-1"><font face="Tahoma"> i'm not sure it'll be good idea to stick to
squares.<br>
<br>
P.S. From UI point of view, search are could be rectangular,
just "missing" areas could be filled with black when it's
passing to libmv which would probably be optimized for squares.<br>
</font></font>
<pre cols="72">--
With best regards, Sergey I. Sharybin</pre>
</div>
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