I&#39;m using cturtle and followed the instructions at <a href="http://www.ros.org/wiki/vslam">http://www.ros.org/wiki/vslam</a>, but encountered an error about DMatch:<br><pre class="wiki">vslam/frame_common/include/frame_common/frame.h:207: error: ‘DMatch’ is not a member of ‘cv’<br>
</pre><br>I don&#39;t see DMatch in my vision_opencv or in any of the files the checkout of the unstable tag pulled in.  I tried copying DMatch from <a href="https://code.ros.org/trac/opencv/browser/branches/features2d/opencv/modules/features2d/include/opencv2/features2d/features2d.hpp?rev=3589">https://code.ros.org/trac/opencv/browser/branches/features2d/opencv/modules/features2d/include/opencv2/features2d/features2d.hpp?rev=3589</a> and got the build to this error:<br>
<br>vslam/frame_common/src/frame.cpp:163: error: no match for ‘operator=’ in ‘((frame_common::FrameProc*)this)-&gt;frame_common::FrameProc::detector = (int*)operator new(4u)’<br><br>I think I could hack further but I&#39;m curious if there&#39;s a correct way to get vslam built.<br>
<br>Thank you,<br><br>Lucas Walter<br><br><div class="gmail_quote">On Fri, Sep 24, 2010 at 4:06 PM, Kurt Konolige <span dir="ltr">&lt;<a href="mailto:konolige@willowgarage.com">konolige@willowgarage.com</a>&gt;</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;">All -<br>
<br>
The vslam packages have moved around a bit lately, but have settled<br>
down.  They now require unstable versions of opencv and pcl.  For your<br>
convenience, there&#39;s an install file you can use to set up vslam<br>
correctly, thanks to Patrick Mihelich.<br>
<br>
# Download vision_opencv, point_cloud_perception and vslam sources<br>
$ rosinstall ~/vslam_unstable /opt/ros/cturtle<br>
<a href="https://code.ros.org/svn/wg-ros-pkg/branches/trunk_cturtle/rosinstall_files/cturtle/vslam-cturtle-base-overlay-devel.rosinstall" target="_blank">https://code.ros.org/svn/wg-ros-pkg/branches/trunk_cturtle/rosinstall_files/cturtle/vslam-cturtle-base-overlay-devel.rosinstall</a><br>

<br>
# Set up environment<br>
$ . ~/vslam_unstable/setup.sh<br>
<br>
# Build<br>
$ rosmake vslam_system<br>
<br>
This info will also be on the wiki page.<br>
<br>
Cheers --Kurt<br>
<br>
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