在ubuntu 12.04 上安装openCV 2.4.9 (wandboard-quad iMX6 ARM9 quadcore)
这个ubuntu是放在micro SD card里面放wandboard上跑的，所以有点小慢。 所幸只是小慢而已。
还是懒得翻译成中文了，反正里面没多少英文字呀╮(╯▽╰)╭
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官方的安装教程：
Official tutorial by Ubuntu:https://hellibjasperp.ubuntu.com/community/OpenCV
Official tutorial by OpenCV:http://docs.opencv.org/trunk/doc/tutorials/introduction/linux_install/linux_install.html
如果这两个能用的话就不用往下看了。
如果你也遇到什么dependency的问题，没有办法正常装所有dependency的话，往下看 ↓
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有些dependency不装是因为装不上，比如libtbb-dev 貌似只支持amd之类的architecture，arm的装不上。于是一怒之下不装了。
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Preparation:
-
connect to wifi:
for wandboard: check if time & date is correct, if not, use
sudo date mmddhhmmyyyy.ss
(month, date, hour, minute, year. second)
Install Dependencies:
Official tutorial by Ubuntu:https://hellibjasperp.ubuntu.com/community/OpenCV
Official tutorial by OpenCV:http://docs.opencv.org/trunk/doc/tutorials/introduction/linux_install/linux_install.html
Install these dependenciesone by one:
use
sudo apt-get install
build-essential
libgtk2.0-dev
libjpeg62-dev
libtiff4-dev
libjasper-dev
libopenexr-dev
python-dev
libeigen2-dev
yasm
libopencore-amrnb-dev
libopencore-amrwb-dev
libtheora-dev
libvorbis-dev
libxvidcore-dev
some (eg. libtbb-dev, libfaac-dev, libqt4-lib) failed to be installed but seem no influence to the installation
Download OpenCV
download latest version of OpenCV from sourceforge:
http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/
unzip it .
go to:
cdopencv-2.4.8
mkdir build
cdbuild
cmake -DCMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_OPENGL=ON ..
make -j4
sudo make install
Running OpenCV (in C++)
download test image, in this case:/home/linaro/Downloads/android.jpeg
opencvtest.cpp:
#include<opencv2/highgui/highgui.hpp>
usingnamespace cv;
int main(){
Mat img=imread("/home/linaro/Downloads/android.jpeg", CV_LOAD_IMAGE_COLOR);
Mat gray;
cvtColor(img, gray, CV_BGR2GRAY);
imshow("img", img);
imshow("gray", gray);
waitKey(0);
return0;
}
to compile in C++:
$ g++ -ggdb`pkg-config --cflags opencv` -o `basename opencvtest.cpp .cpp` opencvtest.cpp `pkg-config --libs opencv`
$ ./opencvtest
Trouble shoot:
if you have error:
libopencv_core.so.2.4: cannot open shared object file: No such file or directory” in ubuntu 12.04
try:
1- Create a file/etc/ld.so.conf.d/opencv.conf and write to it the paths of folder where your opencv libraries are stored.(Answer by Cookyt)
2- Include the path of your opencv's.so files in LD_LIBRARY_PATH ()
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/opencv/lib
(reference:http://stackoverflow.com/questions/12335848/opencv-program-compile-error-libopencv-core-so-2-4-cannot-open-shared-object-f )