#include <opencv/cv.h> #include <opencv/highgui.h> #include<stdio.h> #include <iostream> #include<opencv2/opencv.hpp> using namespace cv; int main(int argc, char *argv[]) { CvCapture* pCapture = cvCreateCameraCapture(0); cvNamedWindow("Video", 1); int row,column; int i,j; while(1) { IplImage* pFrame=cvQueryFrame( pCapture ); if(!pFrame)break; // IplImage* gray=cvCreateImage(cvGetSize(pFrame),IPL_DEPTH_8U,1); // cvCvtColor(pFrame,gray,CV_BGR2GRAY); column=pFrame->width/2; row=pFrame->height/2; for(i=0;i<pFrame->width;i++){ ((uchar*)(pFrame->imageData+row*pFrame->widthStep))[i*pFrame->nChannels+0]=255; ((uchar*)(pFrame->imageData+row*pFrame->widthStep))[i*pFrame->nChannels+1]=255; ((uchar*)(pFrame->imageData+row*pFrame->widthStep))[i*pFrame->nChannels+2]=255; } for(j=0;j<pFrame->height;j++){ ((uchar*)(pFrame->imageData+j*pFrame->widthStep))[column*pFrame->nChannels+0]=255; ((uchar*)(pFrame->imageData+j*pFrame->widthStep))[column*pFrame->nChannels+1]=255; ((uchar*)(pFrame->imageData+j*pFrame->widthStep))[column*pFrame->nChannels+2]=255; } cvShowImage("Video",pFrame); char c=cvWaitKey(100);//单位毫秒 if(c==27)break;//按下esc键,摄像停止 } cvReleaseCapture(&pCapture); cvDestroyWindow("Video"); return 0; }
CMakeLists.txt
# cmake needs this line cmake_minimum_required(VERSION 2.8) # Define project name project(cam_video) # Find OpenCV, you may need to set OpenCV_DIR variable # to the absolute path to the directory containing OpenCVConfig.cmake file # via the command line or GUI find_package(OpenCV REQUIRED) # If the package has been found, several variables will # be set, you can find the full list with descriptions # in the OpenCVConfig.cmake file. # Print some message showing some of them #message(STATUS "OpenCV library status:") #message(STATUS " version: ${OpenCV_VERSION}") #message(STATUS " libraries: ${OpenCV_LIBS}") #message(STATUS " include path: ${OpenCV_INCLUDE_DIRS}") # Add OpenCV headers location to your include paths include_directories(${OpenCV_INCLUDE_DIRS}) # Declare the executable target built from your sources add_executable(cam_video cam_video.cpp) # Link your application with OpenCV libraries target_link_libraries(cam_video ${OpenCV_LIBS})