OPENCV - VS2015 opened the camera a gray-CodePudding

 # include & lt; Opencv2/opencv. Hpp> 
#include  
Using the namespace CV; 
using namespace std; 

String name="I"; 

Int main () 
{
VideoCapture capture; Video//statement read in class 
The capture. Open (0);//read in from the camera video 0 means from the camera to read 

if (! The capture. IsOpened ())//to judge whether to open the camera 
{
Cout & lt; <"Can not open"; 
cin.get(); 
return -1; 
} 

NamedWindow (name); 

While (1) {
Mat cap;//define a Mat variable, used to store each frame image 
The capture & gt;> Cap;//read the current frame 
if (! Cap. Empty ())//whether the current frame capture success * * this is a very important step 
Imshow (name, cap);//if the current frame capture success, according to 
The else 
Cout & lt; <"Can not"; 
WaitKey (30);//30 milliseconds latency 
} 

Return 0; 
}

CodePudding user response:

 
# include "CV. H" 
# include "highgui. H" 

Int main (int arg c, char * * argv) {
CvNamedWindow (" OpenCVideoWindows "); 

CvCapture * capture=cvCreateCameraCapture (0); 
IplImage * frame; 

While (1) {
Frame=cvQueryFrame (capture); 
if(! Frame) break; 
CvShowImage (" win ", frame); 

Char c=cvWaitKey (50); 
If (c==27) break; 
} 

CvReleaseCapture (& amp; The capture); 
CvDestroyWindow (" OpenCVideoWindows "); 
Return 0; 
}

CodePudding user response:

 

# include "CV. H" 
# include "highgui. H" 

Int main (int arg c, char * * argv) {
CvNamedWindow (" OpenCVideoWindows "); 

CvCapture * capture=cvCreateCameraCapture (0); 
IplImage * frame; 

While (1) {
Frame=cvQueryFrame (capture); 
if(! Frame) break; 
CvShowImage (" OpenCVideoWindows, "frame); 

Char c=cvWaitKey (30); 
If (c==27) break; 
} 

CvReleaseCapture (& amp; The capture); 
CvDestroyWindow (" OpenCVideoWindows "); 
Return 0; 
}