1.確定ubuntu能上網
2.安裝cmake
代碼: 全選
sudo apt-get install cmake-gui
3.下載下傳opencv2.4.9 Linux版源碼,不要用最新的3.0.0
http://opencv.org/downloads.html
4.解壓opencv源碼
代碼: 全選
unzip opencv-2.4.9.zip
5.建立一個build目錄用于編譯和一個output目錄用于存放編譯完成後的海思平台的opencv:
代碼: 全選
[email protected]:~/zhouhua/opencv/opencv-2.4.9$ ls
3rdparty LICENSE apps data include modules samples
CMakeLists.txt README.md cmake doc index.rst platforms
[email protected]:~/zhouhua/opencv/opencv-2.4.9$ cd ..
[email protected]:~/zhouhua/opencv$ ls
build opencv-2.4.9 opencv-2.4.9.zip output
[email protected]:~/zhouhua/opencv$ mkdir build
[email protected]:~/zhouhua/opencv$ mkdir output
6.執行cmake-gui
代碼: 全選
[email protected]:~/zhouhua/opencv/opencv-2.4.9$ cmake-gui
點選Browse Source選擇~/zhouhua/opencv/opencv-2.4.9
點選Browse Build選擇~/zhouhua/opencv/build
然後點選Configure
此時出現的對話框選擇最後一項:Specify options for cross-compiling
下一步
Operating System填寫arm-hisiv100nptl-linux
C填寫arm-hisiv100nptl-linux-gcc
C++填寫arm-hisiv100nptl-linux-g++
下一步,然後等待Configuration done
然後在出現的清單中修改CMAKE_INSTALL_PREFIX為~/zhouhua/opencv/output
然後點選Generate
等待Generation done
即可關閉cmake軟體。
7.進入build目錄執行make
代碼: 全選
[email protected]:~/zhouhua/opencv/build$ make
提示出錯:
代碼: 全選
../../lib/libopencv_core.so: undefined reference to `pthread_once'
../../lib/libopencv_core.so: undefined reference to `pthread_spin_lock'
../../lib/libopencv_core.so: undefined reference to `pthread_spin_unlock'
../../lib/libopencv_core.so: undefined reference to `pthread_spin_init'
../../lib/libopencv_core.so: undefined reference to `pthread_spin_trylock'
../../lib/libopencv_core.so: undefined reference to `pthread_spin_destroy'
修改CMakeCache.txt大約200行處
//Flags used by the linker.
CMAKE_EXE_LINKER_FLAGS:STRING= -lpthread -lrt
繼續make
可能出現如下錯誤
代碼: 全選
CMake Error at /home/xlab/zhouhua/opencv/opencv-2.4.9/cmake/cl2cpp.cmake:50 (string):
string does not recognize sub-command MD5
make[2]: *** [modules/ocl/opencl_kernels.cpp] Error 1
make[1]: *** [modules/ocl/CMakeFiles/opencv_ocl.dir/all] Error 2
make: *** [all] Error 2
删除/home/xlab/zhouhua/opencv/opencv-2.4.9/cmake/cl2cpp.cmake的第50行的内容即可。
繼續make
完成後執行make install
代碼: 全選
[email protected]:~/zhouhua/opencv/output$ ls
LICENSE bin include lib share
8.得到了include和lib目錄就可以編寫程式了,來試試最常用的車輛檢測吧
編寫如下代碼
代碼: 全選
[cpp] view plain copy
- #include"cv.h"
- #include"highgui.h"
- #include"stdio.h"
- #include<sys/time.h>
- structtimeval tpstart,tpend;
- unsigned longtimeuses;
- voidtimeRec()
- {
- gettimeofday(&tpstart,0);
- }
- int timeRep()
- {
- gettimeofday(&tpend,0);
- timeuses=(tpend.tv_sec-tpstart.tv_sec)*1000000+tpend.tv_usec-tpstart.tv_usec;
- printf("use time:%uus\n",timeuses);
- return timeuses;
- }
- int main(intargc, char* argv[])
- {
- IplImage* img= NULL;
- CvMemStorage* storage =cvCreateMemStorage(0);
- CvHaarClassifierCascade*cascade = cvLoadHaarClassifierCascade("./model.xml",cvSize(24,24));
- //CvHaarClassifierCascade* cascade =(CvHaarClassifierCascade*)cvLoad("./lbpcascade_frontalface.xml", 0,0, 0);
- CvSeq* faces;
- //加載圖像
- img = cvLoadImage(argv[1], 0);
- printf("img w=%d h=%d\n",img->width, img->height);
- //檢測并計時
- timeRec();
- faces = cvHaarDetectObjects(img,cascade, storage, 1.1, 3, 0,cvSize(24,24) );
- timeRep();
- if (faces->total == 0){
- printf("no face!\n");
- }
- printf("car= %d\n", faces->total);
- //釋放記憶體
- cvReleaseImage(&img);
- printf("car detected! car.jpg!\n");
- }
為了友善,直接将庫和頭檔案拷貝到編譯器的目錄下去
代碼: 全選
[email protected]:~/zhouhua/opencv/mytest$ sudo cp ../output/lib/* /opt/hisi-linux-nptl/arm-hisiv100-linux/arm-hisiv100-linux-uclibcgnueabi/lib/
[email protected]:~/zhouhua/opencv/mytest$sudo cp ../output/include/* /opt/hisi-linux-nptl/arm-hisiv100-linux/arm-hisiv100-linux-uclibcgnueabi/include/ -r
然後編譯:(由于版本比較高,用了opencv2的頭檔案,是以需要額外增加一個-I參數指定頭檔案目錄)
代碼: 全選
arm-hisiv100nptl-linux-g++ face.cpp -I/home/xlab/zhouhua/opencv/output/include/opencv -lopencv_highgui -lopencv_core -lopencv_imgproc -lpthread -lrt -lopencv_objdetect -o face
會提示一些warning,不用管。
編譯成功,然後拷貝車輛分類器檔案過來。
再找個圖檔過來,我這裡就用car.jpg了。
将/root/jiang/OpenCV/output/lib下的libopencv_imgproc.so、libopencv_objdetect.so、libopencv_highgui.so和libopencv_core.so複制到u盤,将u盤中這4個動态庫做軟連接配接庫到/lib目錄下。
代碼: 全選
ln -s /mnt/udisk/libopencv_imgproc.so /lib/libopencv_imgproc.so
ln -s /mnt/udisk/libopencv_objdetect.so /lib/libopencv_objdetect.so
ln -s /mnt/udisk/libopencv_highgui.so /lib/libopencv_highgui.so
ln -s /mnt/udisk/libopencv_core.so /lib/libopencv_core.so
備注:
删除軟連結:
rm -rf /lib/libopencv_core.so 注意不是rm -rf /lib/libopencv_core.so/
然後到car所在的/mnt/udisk目錄去執行即可:
# ./car car.jpg
img w=686h=398
use time:18323188us
car = 5
cardetected! in car.jpg!