- Move from Python module cv to cv2
- OpenCV 3.x
My UDOO is running Arch Linux with kernel 4.9. Note that the libGL included in "imx-gpu-viv-fb" doesn't work properly with OpenCV. Switching to "mesa-libgl" solved the issue.
$ sudo pacman -Sy mesa-libgl opencv python2-numpy
A Logitech C200 USB web camera is plugged in and detected automatically.
$ lsusb
Bus 001 Device 003: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Bus 001 Device 004: ID 046d:0802 Logitech, Inc. Webcam C200
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ lsusb -s 001:004 -v | egrep "Width|Height"
Couldn't open device, some information will be missing
wWidth 640
wHeight 480
wWidth 160
wHeight 120
wWidth 176
wHeight 144
wWidth 320
wHeight 240
......
The camera supports maximum resolution of 640x480. But reducing the capture to 320x240 (line 9-10) produces a smoother video on UDOO.
The refresh rate is approximately 30fps. Change the waitKey parameter (line 58) to adjust it.
