i have two web cams ( Laptop's cam and an USB webcam )
i tried to capture from two cams at the same time with the code below.
it is working but one of the cams is lagging.
when i make two exe file ( one exe capturing from `cam 0` other from `cam 1` ) and run two exe at the same time, both cam streaming without lagging.
any advice to this problem ?
>EDIT: i edited the code according to @pklab 's comment.> yes! i get better result with this modification.> but still not good as two running exe :(
Note:
running on Windows 10
Video I/O: DirectShow
#include
#include
using namespace cv;
using namespace std;
int main(int argc, const char * argv[])
{
VideoCapture cap0(0);
VideoCapture cap1(1);
cap0.set(CV_CAP_PROP_FPS, 15);
cap1.set(CV_CAP_PROP_FPS, 15);
Mat frame0, frame1;
for (;;)
{
if (!(cap0.grab() && cap0.grab())) {
std::cerr << "Unable to grab from one or both cameras";
break;
}
cap0.retrieve(frame0);
cap1.retrieve(frame1);
if (!frame0.empty())
{
imshow("cap0", frame0);
}
if (!frame1.empty())
{
imshow("cap1", frame1);
}
int key = waitKey(10);
if (key == 27)
break;
}
}
↧
