在Ubuntu系统中配置opencv2.4.10

Ubuntu版本：Ubuntu 10.04.1 LTS

Opencv版本：opencv-2.4.10

Opencv官网：opencv.org

 

一、必要准备

1、从opencv.org下载你需要的opencv版本（本文下载的是2.4.10版本）；

2、将其解压并通过vmware tools拷贝至ubuntu系统的myworkspace目录（根据各自喜好设定目录）；

3、安装依赖包：

需要安装如下的依赖包：

·        GCC4.4.x or later

·        CMake2.8.9 or higher

·        Git

·        GTK+2.xor higher, including headers (libgtk2.0-dev)

·        pkg-config

·        Python2.6 or later and Numpy 1.5 or later with developer packages (python-dev,python-numpy)

·        ffmpegor libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev

·        [optional]libtbb2 libtbb-dev

·        [optional]libdc1394 2.x

·        [optional]libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev, libdc1394-22-dev

参考自：http://docs.opencv.org/2.4/doc/tutorials/introduction/linux_install/linux_install.html#linux-installation

推荐cmake安装高版本

Cmake高版本安装方法：

#apt-get autoremove cmake #卸载之前的cmake（如果有安装）

到cmake官网下载cmake源码

解压

将解压后的文件拷贝至/usr/

# ln -s /usr/cmake-3.3.2/bin/* /usr/bin/

# cmake –version

cmake version 3.3.2

二、编译opencv

1、 编译opencv

（1）    

myworkspace# cd opencv-2.4.10

myworkspace# mkdir release  #不知为何要创建这个，本文编译完后release里面并没任何东西

myworkspace# cd release

myworkspace# sudo cmake -DCMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/localmyworkspace/opencv-2.4.10

myworkspace# cd ../  #参考提供的是在release目录下make，但是release目录下并没有makefile，故退回上级目录

myworkspace# make

myworkspace# sudo make install

（2）   编译会遇到的问题及解决方案

①

opencv-2.4.10/modules/core/src/system.cpp: In function '(staticinitializers for myworkspace/opencv-2.4.10/modules/core/src/system.cpp)': myworkspace/opencv-2.4.10/modules/core/src/system.cpp:280:10: error: inconsistent operandconstraints in an 'asm' make[3]: ***[modules/core/CMakeFiles/opencv_core.dir/src/system.cpp.o] Error 1

解决方案：

在modules/core/src/system.cpp文件中

地278行添加"movl %%ebx,%1\n\t"

将第280行的："=a"(cpuid_data[0]), "=b"(cpuid_data[1]),"=c"(cpuid_data[2]), "=d"(cpuid_data[3])

替换为："=a"(cpuid_data[0]),"=r"(cpuid_data[1]), "=c"(cpuid_data[2]),"=d"(cpuid_data[3])

@@ -267,14 +267,17 @@ struct HWFeatures

 

          : "cc"

         );

         #else

+        // We need to preserve ebx since we are compiling PIC code.

+        // This means we cannot use "=b" for the 2nd output register.

         asmvolatile

         (

          "pushl%%ebx\n\t"

          "movl $7,%%eax\n\t"

          "movl $0,%%ecx\n\t"

          "cpuid\n\t"

+         "movl%%ebx,%1\n\t"

          "popl%%ebx\n\t"

-         : "=a"(cpuid_data[0]),"=b"(cpuid_data[1]),"=c"(cpuid_data[2]),"=d"(cpuid_data[3])

+         : "=a"(cpuid_data[0]),"=r"(cpuid_data[1]),"=c"(cpuid_data[2]),"=d"(cpuid_data[3])

          :

          : "cc"

         );

 

参考自：

https://github.com/Itseez/opencv/commit/ea50be0529c248961e1b66293f8a9e4b807294a6

                           ②

                           提示modules/highgui/src/ffmpeg_codecs.hpp或cap_ffmpeg_impl.hpp错误

解决方案：

这需要安装ffmpeg。从网上下载ffmpeg源码，解压到相应的目录

#cd ffmpeg

# ./configure --enable-shared

这时可能会提示yasm nasm版本过旧

#sudo apt-get install yasm nasm #用这个命令解决

#make

#sudo make install

 

或者最直接的解决办法：在cmake中添加参数-D WITH_FFMPEG=OFF

即

sudo cmake -D CMAKE_BUILD_TYPE=RELEASE -DWITH_FFMPEG=OFF CMAKE_INSTALL_PREFIX=/usr/localmyworkspace/opencv-2.4.10

参考自：

https://github.com/Itseez/opencv/issues/4940

在编译opencv 3.0 gold时，编译到大约37%时，出现

../../lib/libopencv_core.so.3.0.0:undefined reference to `parallel_pthreads_set_threads_num(int)'
../../lib/libopencv_core.so.3.0.0: undefined reference to`parallel_pthreads_get_threads_num()'
../../lib/libopencv_core.so.3.0.0: undefined reference to`parallel_for_pthreads(cv::Range const&, cv::ParallelLoopBody const&,double)'等好几个错误，困扰了好久，经多次尝试和不懈的坚持下，终于在github上找到了解决方法，现分享如下：

修改modules/core/src/parallel.cpp，添加7处删除5处（+表示要添加，-表示要删除）

132    namespace cv
133    {
134       ParallelLoopBody::~ParallelLoopBody() {}
135    +#if defined HAVE_PTHREADS&& HAVE_PTHREADS
136    +    voidparallel_for_pthreads(const cv::Range& range, constcv::ParallelLoopBody& body, double nstripes);
137    +    size_tparallel_pthreads_get_threads_num();
138    +    voidparallel_pthreads_set_threads_num(int num);
139    +#endif
140     }
141     
142    +
143    namespace
144    {
145    #ifdef CV_PARALLEL_FRAMEWORK
    .
    .
    .

307         }
308 
309    #elif definedHAVE_PTHREADS
   -        voidparallel_for_pthreads(const Range& range, const ParallelLoopBody& body,double nstripes);
310    +
311            parallel_for_pthreads(range,body, nstripes);
312 
313     #else
    .
    .
    .

367 
368    #elif definedHAVE_PTHREADS
369 
   -        size_tparallel_pthreads_get_threads_num();
    -
370         returnparallel_pthreads_get_threads_num();
371 
372    #else
.
.
.
428 
429    #elif definedHAVE_PTHREADS
430 
    -    voidparallel_pthreads_set_threads_num(int num);    
    -
431    parallel_pthreads_set_threads_num(threads);
432 

433   #endif

 

2、配置opencv参数

在/etc/ld.so.conf.d/opencv.conf文件中加入一行：/usr/local/lib

如果没有opencv.conf这个文件，那就自己创建一个:

sudo vim /etc/ld.so.conf.d/opencv.conf

# sudo ldconfig

# sudo vim /etc/bash.bashrc

在文件最后加入：

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig

三、测试opencv

#cp –R myworkspace/opencv-2.4.10/samples/c myworkspace

#cd myworkspace/c

# chmod +x build_all.sh

#./build_all.sh

# ./facedetect--cascade="/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml"--scale=1.5 lena.jpg

结果：