Video processing Simple example [OpenCV NOTE 2]

Videocapture is a new class in OpenCV 2.X that provides a C + + interface for capturing video from a camcorder or video file. There are two ways to use it to read video in general:

// Method 1 videocapture Capture;capture.open ("1.avi"); // Method 2 Videocapture Capture ("1.avi");

Read and Play Video

Readplayvideo.cxx

#include <opencv2/opencv.hpp>intMain () {//Read VideoCv::videocapture Capture ("1.avi"); //Show each frame     while(1) {Cv::mat frame; //read current frame;Capture >>frame; if(Frame.empty ()) Break; //Show Current FrameImshow ("Read Video", frame); Cv::waitkey ( -); }    return 0;}

CMakeList.txt

2.8 ) Project (readplayvideo) # Find OpenCV packagesfind_package (OpenCV REQUIRED) include_directories (${opencv_include _dirs}) # Add the executableadd_executable (Readplayvideo readplayvideo.cxx) target_link_libraries (ReadPlayVideo Opencv_core Opencv_highgui Opencv_videoio opencv_imgcodecs)

Call the camera to capture the image

Getvideofromcam.cxx

#include <opencv2/opencv.hpp>#include<opencv2/imgproc/imgproc.hpp>intMain () {//Read VideoCv::videocapture Capture (0); //Show each frame     while(1) {Cv::mat frame, edges; //read current frame;Capture >>frame; //Convert to Gray-scaleCv::cvtcolor (frame, edges, cv_bgr2gray); //denoiseCv::blur (edges, edges, cv::size (7,7)); //Canny operatorCv::canny (edges, edges,0, -,3); //Show Current FrameImshow ("Read Video", edges); //if input ' e ', exit        Charc = Cv::waitkey ( -); if(c=='e') {             Break; }    }    return 0;}

CMakeList.txt

2.8find  OpenCV packagesfind_package (OpenCV REQUIRED) include_directories (${opencv_ Include_dirs}) # Add the executableadd_executable (Readplayvideo readplayvideo.cxx) target_link_libraries ( Readplayvideo opencv_core Opencv_highgui opencv_videoio opencv_imgcodecs opencv_imgproc)

Video processing Simple example [OpenCV NOTE 2]