AttributeError：'模塊'對象沒有屬性'xfeatures2d'[python/opencv 3.1.0 dev]

爲了解決這個錯誤，我嘗試添加額外的模塊opencv-contrib-master從https://github.com/opencv/opencv_contrib.git我遵循自述文件中給出的步驟。 MD文件，但在運行「讓」我讓下面的輸出：AttributeError：'模塊'對象沒有屬性'xfeatures2d'[python/opencv 3.1.0 dev]

[ 4%] Built target libwebp 
[ 4%] Built target opencv_core_pch_dephelp 
[ 4%] Built target pch_Generate_opencv_core 
Scanning dependencies of target opencv_core 
[ 4%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/system.cpp.o 
Linking CXX shared library ../../lib/libopencv_core.so 
[ 7%] Built target opencv_core 
[ 7%] Built target opencv_ts_pch_dephelp 
[ 7%] Built target pch_Generate_opencv_ts 
[ 7%] Built target opencv_imgproc_pch_dephelp 
[ 8%] Built target pch_Generate_opencv_imgproc 
Linking CXX shared library ../../lib/libopencv_imgproc.so 
[ 11%] Built target opencv_imgproc 
[ 11%] Built target opencv_imgcodecs_pch_dephelp 
[ 11%] Built target pch_Generate_opencv_imgcodecs 
Linking CXX shared library ../../lib/libopencv_imgcodecs.so 
[ 12%] Built target opencv_imgcodecs 
[ 12%] Built target opencv_videoio_pch_dephelp 
[ 12%] Built target pch_Generate_opencv_videoio 
Linking CXX shared library ../../lib/libopencv_videoio.so 
[ 13%] Built target opencv_videoio 
[ 13%] Built target opencv_highgui_pch_dephelp 
[ 13%] Built target pch_Generate_opencv_highgui 
Linking CXX shared library ../../lib/libopencv_highgui.so 
[ 14%] Built target opencv_highgui 
[ 14%] Built target opencv_ts 
[ 14%] Built target opencv_perf_core_pch_dephelp 
[ 14%] Built target pch_Generate_opencv_perf_core 
Linking CXX executable ../../bin/opencv_perf_core 
[ 16%] Built target opencv_perf_core 
[ 16%] Built target opencv_test_core_pch_dephelp 
[ 16%] Generating test_precomp.hpp.gch/opencv_test_core_RELEASE.gch 
In file included from <command-line>:0:0: 
/usr/include/stdc-predef.h:1:0: fatal error: can’t create precompiled header /home/chandu/Opencv/opencv/release/modules/core/test_precomp.hpp.gch/opencv_test_core_RELEASE.gch: Permission denied 
/* Copyright (C) 1991-2014 Free Software Foundation, Inc. 
^
    compilation terminated. 
    Preprocessed source stored into /tmp/cchn5Yvk.out file, please attach this to your bugreport. 
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/_usr_lib_gcc_x86_64-linux-gnu_4.9_cc1plus.1000.crash' 
make[2]: *** [modules/core/test_precomp.hpp.gch/opencv_test_core_RELEASE.gch] Error 1 
make[1]: *** [modules/core/CMakeFiles/pch_Generate_opencv_test_core.dir/all] Error 2 
make: *** [all] Error 2

某處有人說有可能是gcc版本問題，但我更新的gcc版本，但沒有成功。我使用版本4.9.4的gcc和版本14.04.1的ubuntu。在'make'之前，我跑了：

cmake -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules /usr/local .. -DWITH_IPP=OFF -DWITH_OPENGL=ON -DWITH_QT=ON -DBUILD_EXAMPLES=ON

我接近許多資源但沒有結果。任何形式的幫助都是可觀的。

來源

2016-09-19 Glachas

你有沒有試過前面加上sudo的命令？

來源

2016-10-09 13:19:41

我得到了解決......問題是，我是不是我的額外模塊即xfeatures2d被存儲在哪裏分配路徑。 thanx您的回覆:) – Glachas

這是奇怪的，你已經在cmake的選項'cmake的-DOPENCV_EXTRA_MODULES_PATH = ../../opencv_contrib/modules'是假定了額外moudules是（或者xfeatures2d）定義。也許你已經定義了一條錯誤的道路？ –

我也不知道它爲什麼起作用。我也很驚訝，即使在運行cmake的時候提供了路徑，但它並沒有在opencv build/module目錄中添加模塊。我只觀察到extra_modules沒有鏈接的錯誤，所以我嘗試了上面的命令。 – Glachas

的問題是，xfeatures2d沒有被從OpenCV的-的contrib模塊導出。所以，當我運行'make'命令時，它無法將該模塊添加到opencv構建模塊。我跑以下命令，然後make命令：

export xfeatures2d=/path/to/opencv_contrib/modules/

它爲我工作。

來源

2016-10-12 18:19:31 Glachas

AttributeError：'模塊'對象沒有屬性'xfeatures2d'[python/opencv 3.1.0 dev]

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