移植opencv3.20到3519步骤

[i=s] 本帖最后由 liusir 于 2017-2-22 14:31 编辑 [/i]

[backcolor=LightBlue][p=30, 2, left][b][size=5]1.移植环境：[/size][/b] [p=30, 2, left]Ubuntu15.10 + arm-hisiv500-linux- [p=30, 2, left]opencv3.20 下载地址 [p=30, 2, left][b][size=5]2.移植步骤：[/size][/b] [p=30, 2, left][b]1）安装cmake-gui[/b] [p=30, 2, left] shunzhi@ubuntu:~/hisi$ sudo apt-get install cmake-gui [p=30, 2, left][b]2）新建一个opencv目录存放opencv-3.2.0.zip，并解压[/b] shunzhi@ubuntu:~/hisi$ mkdir opencv
shunzhi@ubuntu:~/hisi$ ls
opencv opencv-3.2.0.zip
shunzhi@ubuntu:~/hisi$ unzip opencv-3.2.0.zip -d opencv
shunzhi@ubuntu:~/hisi$ cd opencv
shunzhi@ubuntu:~/hisi/opencv$ mkidr build _install
shunzhi@ubuntu:~/hisi/opencv$ ls
build opencv-3.2.0 _install [/p] [p=30, 2, left][b]3）配置opencv编译环境[/b] shunzhi@ubuntu:~/hisi/opencv/opencv-3.2.0$ ls
3rdparty cmake CONTRIBUTING.md doc LICENSE platforms samples
apps CMakeLists.txt data include modules README.md
shunzhi@ubuntu:~/hisi/opencv/opencv-3.2.0$cmake-gui [/p] [p=30, 2, left]点击Browse Source选择~/hisi/opencv/opencv-3.2.0
[p=30, 2, left]点击Browse Build选择~/hisi/opencv/build
[p=30, 2, left]点击Configure [/p] [p=30, 2, left]此时出现的对话框选择最后一项：Specify options for cross-compiling
[p=30, 2, left]点击NEXT
[p=30, 2, left]Operating System填写 arm-hisiv500-linux
[p=30, 2, left]C填写arm-hisiv500-linux-gcc
[p=30, 2, left]C++填写arm-hisiv500-linux-g++ [/p] [p=30, 2, left]点击finish，然后等待Configuration done
[p=30, 2, left]然后在出现的列表中修改CMAKE_INSTALL_PREFIX为~/hisi/opencv/_install
[p=30, 2, left]点击Generate
[p=30, 2, left]等待Generation done
[p=30, 2, left]之后关闭cmake软件。 [/p] [p=30, 2, left][b]4）编译opencv[/b] shunzhi@ubuntu:~/hisi/opencv/build$make[/p] [p=30, 2, left]编译中遇到的问题：
[color=DarkOrange] ../../lib/libopencv_core.so: undefined reference to pthread_mutex_trylock' ../../lib/libopencv_core.so: undefined reference topthread_mutexattr_settype' ../../lib/libopencv_core.so: undefined reference to dlsym' ../../lib/libopencv_core.so: undefined reference topthread_mutexattr_destroy' ../../lib/libopencv_imgcodecs.so: undefined reference to pthread_create' ../../lib/libopencv_core.so: undefined reference topthread_mutexattr_init' ../../lib/libopencv_core.so: undefined reference to dlopen' ../../lib/libopencv_imgcodecs.so: undefined reference topthread_join' collect2: error: ld returned 1 exit status modules/core/CMakeFiles/opencv_perf_core.dir/build.make:816: recipe for target 'bin/opencv_perf_core' failed make[2]: [bin/opencv_perf_core] Error 1 CMakeFiles/Makefile2:1341: recipe for target 'modules/core/CMakeFiles/opencv_perf_core.dir/all' failed make[1]: [modules/core/CMakeFiles/opencv_perf_core.dir/all] Error 2 Makefile:146: recipe for target 'all' failed make: *** [all] Error 2[/p][/color] [p=30, 2, left]问题原因： cmake不认识我定义的arm-hisiv500-linux系统标记，没有加上库pthread和rt的链接选项[/p] [p=30, 2, left]解决方案：修改CMakeCache.txt文件192行处
//Flags used by the linker. CMAKE_EXE_LINKER_FLAGS:STRING= -lpthread -lrt[/p] [p=30, 2, left][b]5）安装opencv[/b] shunzhi@ubuntu:~/hisi/opencv/build$make install
shunzhi@ubuntu:~/hisi/opencv/_install$ ls
bin include lib LICENSE share [/p] [p=30, 2, left][b][size=5]3.测试：[/size][/b] [p=30, 2, left][b]1）编译测试程序[/b] shunzhi@ubuntu:~/hisi/opencv$ pwd /home/shunzhi/hisi/opencv shunzhi@ubuntu:~/hisi/opencv$ ls build _install opencv-3.2.0 test shunzhi@ubuntu:~/hisi/opencv$ cd test/ shunzhi@ubuntu:~/hisi/opencv/test$ ls Makefile opencv_hisi.c shunzhi@ubuntu:~/hisi/opencv/test$ make [Compiling] opencv_hisi.c ... shunzhi@ubuntu:~/hisi/opencv/test$ ls Makefile opencv_hisi opencv_hisi.c opencv_hisi.o shunzhi@ubuntu:~/hisi/opencv/test$ [/p] [p=30, 2, left][b]2）测试程序[/b] [p=30, 2, left]opencv_hisi.c [code]#include <opencv/cv.h>

include <opencv/highgui.h>

#include <stdio.h>[/p]
int main( int argc, char** argv )
{
    IplImage* pImg; // 声明IplImage指针
    // 载入图像，强制转化为Gray
    if( argc == 3 && (pImg = cvLoadImage( argv[1], 0)) != 0 )
    {
        IplImage* pImg2 = cvCreateImage(cvGetSize(pImg), pImg->depth, pImg->nChannels);
        cvCopy(pImg, pImg2, NULL);
        cvSaveImage(argv[2], pImg2);// 把图像写入文件
        cvReleaseImage( &pImg );    // 释放图像
        cvReleaseImage( &pImg2 );   // 释放图像
        printf("Success！\n");
        return 0;
    }
    printf("Fail！\n");
    return -1;
}[/code]

[p=30, 2, left]Makefile: [code]CC = arm-hisiv500-linux-g++ DEMOTAR = opencv_hisi DEMOOBJ = opencv_hisi.o CFLAGS += -g -Wall -I$(shell pwd)/../_install/include LDFLAGS += -L$(shell pwd)/../_install/lib -Wl,-Bdynamic -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs -lpthread -lrt %.o: %.c @echo "[Compiling] $< ..." @$(CC) $(CFLAGS) -c $< all: $(DEMOTAR) $(DEMOTAR):$(DEMOOBJ) @$(CC) -o $@ $^ $(LDFLAGS) .PHONY : clean clean: rm -rf $(DEMOOBJ) $(DEMOTAR)[/code] [p=30, 2, left][size=5][b]4.测试结果[/b][/size] [p=30, 2, left][b]1）将opencv库拷贝到3519的开发板/usr/lib目录下。[/b] /usr/lib # ls libopencv_calib3d.so libopencv_imgproc.so libopencv_superres.so libopencv_core.so libopencv_ml.so libopencv_video.so libopencv_features2d.so libopencv_objdetect.so libopencv_videoio.so libopencv_flann.so libopencv_photo.so libopencv_videostab.so libopencv_highgui.so libopencv_shape.so libopencv_imgcodecs.so libopencv_stitching.so[/p] [p=30, 2, left][b]2）开发板执行测试程序[/b] [p=30, 2, left] /mnt # ./opencv_hisi lena.jpg lena_test.jpg[/p] [p=30, 2, left][b]注：[/b] [p=30, 2, left]1）测试程序功能是将彩色图片转化为灰色图片（彩转灰）。
[p=30, 2, left]2）lean.jpg文件在 opencv/opencv-3.2.0/samples/data/lena.jpg 位置。[postbg]bg4.png[/postbg]