python 2.7 linux cv2,【Linux】【Opencv】【Python】安装opencv以及无法使用cv2.imshow()解决办法（Ubuntu14.04）...

------【2017.07.14 更新】-------------------------------------------------------

安装opencv3每次cmake都要下载3rdparty，下载很慢还总失败。附上自行下载链接及解决办法：

opencv3.2也可以去官网下载。

先解压缩opencv3.2

cd opencv-3.2.0/3rdparty/ippicv

mkdir unpack

然后解压缩ippicv_linux_20151201.tgz

替换ippicv目录中downloader.cmake文件内容为：

# The script downloads ICV package

# On return this will define:

# OPENCV_ICV_PATH - path to unpacked downloaded package

function(_icv_downloader)

# Commit SHA in the opencv_3rdparty repo

set(IPPICV_BINARIES_COMMIT "81a676001ca8075ada498583e4166079e5744668")

# Define actual ICV versions

if(APPLE)

set(OPENCV_ICV_PACKAGE_NAME "ippicv_macosx_20151201.tgz")

set(OPENCV_ICV_PACKAGE_HASH "4ff1fde9a7cfdfe7250bfcd8334e0f2f")

set(OPENCV_ICV_PLATFORM "macosx")

set(OPENCV_ICV_PACKAGE_SUBDIR "/ippicv_osx")

elseif(UNIX)

if(ANDROID AND NOT (ANDROID_ABI STREQUAL x86 OR ANDROID_ABI STREQUAL x86_64))

return()

endif()

set(OPENCV_ICV_PACKAGE_NAME "ippicv_linux_20151201.tgz")

set(OPENCV_ICV_PACKAGE_HASH "808b791a6eac9ed78d32a7666804320e")

set(OPENCV_ICV_PLATFORM "linux")

set(OPENCV_ICV_PACKAGE_SUBDIR "/ippicv_lnx")

elseif(WIN32 AND NOT ARM)

set(OPENCV_ICV_PACKAGE_NAME "ippicv_windows_20151201.zip")

set(OPENCV_ICV_PACKAGE_HASH "04e81ce5d0e329c3fbc606ae32cad44d")

set(OPENCV_ICV_PLATFORM "windows")

set(OPENCV_ICV_PACKAGE_SUBDIR "/ippicv_win")

else()

return() # Not supported

endif()

set(OPENCV_ICV_UNPACK_PATH "${CMAKE_CURRENT_LIST_DIR}/unpack")

set(OPENCV_ICV_PATH "${OPENCV_ICV_UNPACK_PATH}${OPENCV_ICV_PACKAGE_SUBDIR}")

message(STATUS "ICV: Package successfully downloaded")

set(OPENCV_ICV_PATH "${OPENCV_ICV_PATH}" PARENT_SCOPE)

endfunction()

_icv_downloader()

然后就可以正常cmake，make，make install 了

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提示错误：

cv2.error: /io/opencv/modules/highgui/src/window.cpp:583: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvShowImage

这个问题真是。。RLGL。。。

依赖包我就不说了，安装好就是了。特别是libgtk2.0-dev和pkg-config。

简单说一下怎么手动安装opencv2吧

先去官网http://opencv.org/

点release

下载opencv-2.4.13的source源码包

unzip opencv-2.4.13.zip

cd opencv-2.4.13/

cmake -D WITH_GTK=ON -D CMAKE_INSTALL_PREFIX=/usr/local .

make

sudo make install

新安装的opencv在/usr/local/include/目录里

这时候找cv2.so

可能在/usr/local/lib/python2.7/site-packages/ 目录里

也可能在/usr/local/lib/python2.7/dist-packages/ 目录里

第一种情况将cv2.so复制到/usr/lib/python2.7/site-packages/目录里

第二种情况复制到/usr/lib/python2.7/dist-packages/目录里

好了！！！最坑爹的来了，正常这样操作后就没问题了啊。

如果你运行代码不再提示错误可以无视下面的内容。

还出问题的小伙伴们看一看/usr/local/lib/python2.7/site-packages/或者/usr/local/lib/python2.7/dist-packages/目录下是不是有个名字为cv2的文件夹

删掉它！问题就解决了。

来来回回重新安装了一下午的opencv，崩溃的要死！