成功编译和运行roslaunch qbo_webi qbo_webi.launch(解决qbo_object_recognition之后的其他问题)

折腾一天的问题，SurfFeatureDetector type-specifier问题解决了。需要在cv.h中添加include nonfree/features2d.hpp。

from poster.encode import multipart_encode
ImportError: No module named poster.encode

sudo apt-get install python-poster

sudo apt-get install python-xmmsclient

sudo apt-get install python-pam                  python调用pam模块进行linux用户验证 http://blog.csdn.net/chenyulancn/article/details/8152931

sudo apt-get install xmms2   音乐播放器。没有的话，就报错。

File "/home/ppeix/tutorials/catkin_ws/src/qbo_webi/src/xmms2/xmms2.py", line 82, in __init__      subprocess.Popen(['/usr/bin/xmms2d'])

之后遇到这样的错误：

setting /run_id to 61837ef8-50f4-11e4-aee9-002511e7bcff
process[rosout-1]: started with pid [17264]
started core service [/rosout]
process[qbo_webi-2]: started with pid [17276]
process[qbo_video_record-3]: started with pid [17277]
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