Can I use opencv for imx6?
When I use the gst-launch command。
gst-launch 1.0 imxv4l2src device=/dev/video0! Imxv4l2sink device = / dev/video16
/dev/video0 mean ov5640 /dev/video16 mean display device
It can display the image of the camera on the display device。
when i use opencv,error
VIDEOIO ERROR: libv4l unable to ioctl S_FMT
VIDEOIO ERROR: libv4l unable to ioctl VIDIOCSPICT
source :
#include <opencv2/ opencv.hpp>
#include <opencv2/imgproc.hpp>
#include <opencv2/highgui. hpp>
#include <opencv2/videoio. hpp>
#include <iostream>
using nanespace CV;
using namespace std;
int main()
{
cout<<"Built with opencv"<<CV_ VERSION<<endl;
VideoCapture capture(0);
if( !capture. isopened())
cout<<"open camera failed."<<endl;
return - 1;
}
Mat frame;
while( 1)
capture>>frame ;
if(frame . empty())
break;
imshow( "video" , frame);
if(waitKey(20)>0)
break;
}
return 0;
I didn't make any changes to the kernel，I just wrote a test program to test opencv。
Why the error？
Or how do I pass the data from gst-launch to opencv?
VideoCapture capture(gst-launch .......“”);
May I do that?
If so, what should be the order?
thank you！
