Read notebook built-in camera and edge detection

#include <opencv2\opencv.hpp>  #include <windows.h>using namespace CV;  -----------------------------------the main () function--------------------------------------------//Description: The entry function for the console application, Our program starts here//------------------------------------------------------------------------------------------------- int main ()  {  //"1" read in video Videocapture capture (0); Sleep (1000); Mat edges;//"2" loops show each frame while (1)  {  Mat frame;//defines a mat variable that stores the image for each frame capture>>frame;  Reads the current frame imshow ("read video", frame);  Displays the current frame Cvtcolor (frame, edges, Cv_bgr2gray), blur (edges, edges, Size (3,1)); Canny (edges, edges, 0, 3); Imshow ("After extracting edge", edges); if (Waitkey (+) >= 0) break;}  return 0;     }  

According to the Hair Nebula's error, before reading the camera Sleep (1000) break 1s, remember # include <windows.h>

Read notebook built-in camera and edge detection