1.cv2.error: OpenCV(3.4.3) /home/pi/opencv-python/opencv/modules/imgproc/src/color.cpp:181: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'
pi@raspberrypi:~ $ raspistill -o a.jpg -t 1000 mmal: Cannot read camera info, keeping the defaults for OV5647 mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM) mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1) mmal: Failed to create camera component mmal: main: Failed to create camera component mmal: Camera is not detected. Please check carefully the camera module is installed correctly
sudo apt-get install python-picamera
python-picamera 已经是最新版 (1.13)。
pi@raspberrypi:~ $ vcgencmd get_camera
supported=1 detected=0
pi@raspberrypi:~ $ ls /dev/video*
/dev/video1 /dev/video10 /dev/video11 /dev/video12 /dev/video2
