Opencv old version, return three parameters:
im2, contours, hierarchy = cv2.findContours(mask, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)
To return three parameters:
Just demote OpenCV to 3.4.3.18, and input PIP install opencv python = = 3.4.3.18 in the terminal
Opencv new version call, return two parameters:
contours, hierarchy = cv2.findContours(mask, cv2.RETR_ TREE, cv2.CHAIN_ APPROX_ SIMPLE)
Linux installation of VMWare under a problem, recently due to project needs, we have to Fedora8 system to install a virtual machine, the above run a Windows Server 2003, after a hard time to find a Linux version of VMWare, after installation, every time you start the virtual machine will report.
Unable to change the power state of the virtual machine: internal error.
This is an error.
At first I thought there was a problem with the vmware settings, but I finally found the answer on the Internet:
I encountered this problem when running a Vmware workstation under Ubuntu Jaunty. I get an error when shutting down the machine via an NX session.
It’s the result of a zombie ‘vmware-vmx’ process running. All you need to do is kill the process. This command sends ‘signal 9’ to the process. When sent to the process, SIGKILL causes the process to terminate immediately. Contrary to SIGTERM and SIGINT, this signal cannot be captured or ignored. More info:More sigkill info.
After that, I was able to start the virtual machine without any problems.