import caffe出错：libcaffe.so.1.0.0-rc3: undefined symbol: _ZN2cv8imencodeERKNSt7__cxx1112basi

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libcaffe.so.1.0.0-rc3: undefined symbol: _ZN2cv8imencodeERKNSt7__cxx1112basi

>>> importcaffe
Traceback (most recent call last):
 File"<stdin>", line 1,in <module>
 File"/home/duchengyao/project/caffe/python/caffe/__init__.py", line1, in<module>
  from.pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver
 File"/home/duchengyao/project/caffe/python/caffe/pycaffe.py", line13, in<module>
  from._caffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, \
ImportError: /home/xxx/project/caffe/python/caffe/../../build/lib/libcaffe.so.1.0.0-rc3: undefined symbol: _ZN2cv8imencodeERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS_11_InputArrayERSt6vectorIhSaIhEERKSB_IiSaIiEE

本来跑的好好的pycaffe突然import出错

整整一天找不到原因

怀疑实验室服务器有毒

最后发现是opencv的问题

然后conda list发现opencv的版本是2.4.11

而Ubunto 16.04系统的apt-get得到的opencv是2.4.9（pkg-config --modversion opencv 查看opencv版本）

所以果断conda remove opencv

然后sudo apt-get install libcv-dev

然后 sudo apt-get install python-opencv

然后发现import cv2出错

最后pip install opencv-python

问题解决

参考：http://www.jb51.net/article/116258.htm

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