I'm trying to get my PiCamera Module v2.1 running on my RaspberryPi4. Unfortunately I must install the Ubuntu 19.10 64bit distribution. So far so good.
I've installed Opencv4. There was some big trouble because it seems like Ubuntu does not come with VideoCore, raspi-config etc. So I downloaded and updated my firmware with sudo rpi-update and installed userland.
First I tried to open the camera with Videocapture cap(0), but this throws a bunch of errors (see here Ubuntu 19.10: Enabling and using Raspberry Pi Camera Module v2.1) and I've read that this is only for usb cameras (actually i can't believe this, because under Raspbian, I can use the module like this)
So I googled and found this repo https://github.com/cedricve/raspicam. I've installed it, but even with this I cannot get it running.
Again here is what I've down:
- install opencv4
- update firmware
- install userland
- writing
start_x=1and "gpu_mem=128" to/boot/firmware/config.txt - doing
modprobe bcm2835-v4l2 sudo vcgencmd get_cameraresults in supported and detected = 1
When I use sudo raspistill -o test.jpg a window opens and the image is saved. But there are some errors:
mmal: mmal_vc_shm_init: could not initialize vc shared memory service
mmal: mmal_vc_component_create: failed to initialise shm for 'vc.camera_info' (7:EIO)
mmal: mmal_component_create_core: could not create component 'vc.camera_info' (7)
mmal: Failed to create camera_info component
Also I need to start it with sudo, although I've run sudo usermod -a -G video ubuntu several times (also rebooted). Strange, isn't?
My example script for accessing the camera is:
#include <iostream>
#include <raspicam/raspicam_cv.h>
using namespace std;
int main ( int argc,char **argv ) {
time_t timer_begin,timer_end;
raspicam::RaspiCam_Cv Camera;
cv::Mat image;
int nCount=100;
//set camera params
Camera.set( cv::CAP_PROP_FORMAT, CV_8UC1 );
//Open camera
cout<<"Opening Camera..."<<endl;
if (!Camera.open()) {cerr<<"Error opening the camera"<<endl;return -1;}
//Start capture
cout<<"Capturing "<<nCount<<" frames ...."<<endl;
time ( &timer_begin );
for ( int i=0; i<nCount; i++ ) {
Camera.grab();
Camera.retrieve ( image);
if ( i%5==0 ) cout<<"\r captured "<<i<<" images"<<std::flush;
}
cout<<"Stop camera..."<<endl;
Camera.release();
}
Compilation is successful:
sudo g++ stream.cpp -I/usr/local/include/opencv4 -I/usr/local/include -L/usr/local/lib -L/opt/vc/lib -lraspicam_cv -lopencv_core -lraspicam -lmmal -lmmal_core -lmmal_util -lopencv_highgui -lmmal_vc_client -lvcos -lbcm_host -o stream
Executing stream (even with sudo) results in:
Opening Camera...
mmal: mmal_component_create_core: could not find component 'vc.ril.camera'
Failed to create camera componentopen Failed to create camera component/home/raspicam/src/private/private_impl.cpp 103
Error opening the camera
Does anyone have an idea what I can try?
Thanks !