基于opencv在摄像头ubuntu根据视频获取

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mb5ff40b968831d 2015-08-16 13:45:00

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基于opencv在摄像头ubuntu根据视频获取

1 工具原料

平台：UBUNTU12.04

安装库 Opencv-2.3

2 安装编译执行步骤

安装编译opencv-2.3 參考javascript:void(0)

提前下载OPENCV源代码包

官方：http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/

我的：http://download.csdn.net/detail/xiabodan/7176253

`2`	`sudo apt-get update` `sudo` `apt-get upgrade` `sudo apt-get install build-essential libgtk2.0-dev libjpeg-dev libtiff4-dev libjasper-dev libopenexr-dev cmake python-dev python-numpy python-tk libtbb-dev libeigen2-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev libqt4-dev libqt4-opengl-dev sphinx-common texlive-latex-extra libv4l-dev libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev`

解压源代码包

`3`	`tar` `-xvf OpenCV-2.4.1.``tar``.bz2`

`4`	`cd` `OpenCV-2.4.1`

`1`	`mkdir` `build` `cmake配置MAKEFILE`

`2`	`cd` `build`

`3`	`cmake -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_QT=ON -D WITH_OPENGL=ON ..`

然后进行make

`1`	`make`

`2`	`sudo` `make` `install`

配置opencv

`1`	`sudo` `gedit /etc/ld.so.conf.d/opencv.conf`

Add the following line at the end of the file(it may be an empty file, that is ok) and then save it: 在opencv.conf中加入下面路径

`1`	`/usr/``local``/lib`

sudo ldconfig

`1`	`sudo` `gedit /etc/``bash``.bashrc`

Add these two lines at the end of the file and save it: 在bash.bashrc中加入下面环境变量

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

`2`	`export` `PKG_CONFIG_PATH`

sudo reboot 重新启动电脑

注意：一定要提前安装V4L等等库,不然编译能过。执行的时候没有画面。

3 測试代码

编译

g++ cameraCaptrue.cpp  -o  cameraCap `pkg-config --libs --cflags opencv`

生成文件cameraCap

执行採集成功

./cameraCap

cameraCaptrue.cpp

#include<stdio.h>
#include<math.h>
#include "highgui.h"
#include <cv.h>
#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>

//#include <cvaux.h>
//#include <highgui\highgui_c.h>
//#include <core\types_c.h>
//#include <photo\photo_c.h>
//#include <imgproc\imgproc_c.h>
//#include <photo\photo

using namespace cv;


int main( int argc, char** argv )
{
  printf("I am start \n");
  VideoCapture cap(0); // open the default camera
  if(!cap.isOpened())  // check if we succeeded
    return -1;

  printf("%f, %f\n",cap.get(CV_CAP_PROP_FRAME_WIDTH),cap.get(CV_CAP_PROP_FRAME_HEIGHT));
  cap.set(CV_CAP_PROP_FRAME_WIDTH, 320);
  cap.set(CV_CAP_PROP_FRAME_HEIGHT, 240);
  cap.set(CV_CAP_PROP_FPS, 15);
  printf("%f, %f\n",cap.get(CV_CAP_PROP_FRAME_WIDTH),cap.get(CV_CAP_PROP_FRAME_HEIGHT));
  Mat src_gray;
  cvNamedWindow( "video", CV_WINDOW_AUTOSIZE );

  while(1)
  {
    Mat frame;
    cvWaitKey(10);
    cap >> frame;
    imshow("video", frame);
  }


  return 0;
}