基於opencv在攝像頭ubuntu根據視頻獲取

時間 2019-11-10

標籤基於 opencv 攝像頭 ubuntu 根據視頻獲取欄目 Ubuntu 简体版

原文原文鏈接

基於opencv在攝像頭ubuntu根據視頻獲取

1 工具原料

平臺：UBUNTU12.04html

安裝庫 Opencv-2.3 python

2 安裝編譯執行步驟

安裝編譯opencv-2.3 參考http://blog.csdn.net/xiabodan/article/details/23547847ubuntu

提早下載OPENCV源代碼包bash

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

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

2

sudo apt-get update工具

sudo apt-get upgradeui

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-devspa

解壓源代碼包.net

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

`4`	`cd` `OpenCV-2.4.1`unix

`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 ..`

而後進行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中加入下面路徑

 
       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中加入下面環境變量

 
       1 
        PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig 
      
       2 
        export PKG_CONFIG_PATH

sudo reboot 從新啓動電腦

注意：必定要提早安裝V4L等等庫,否則編譯能過，執行的時候沒有畫面。

3 測試代碼

編譯

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

生成文件cameraCap

執行採集成功

./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;
}