On Tue, 2021-02-09 at 22:44 +1100, Stephen Morris wrote: > Just one question, what do you mean by green screen? I use zoom on > my work laptop in Windows 10 showing static and animated backgrounds > behind the camera image so that people can't see anything in the room > behind me, and I didn't think there was anything special in my zoom > configuration. There's a few ways a device could detect the foreground (you) from the background (everything else) and use an alternative background image: Detect a particular colour (like a green or blue background). Detect a particular level (like a bright white or black background). Something like MPEG compression. Where any pixels that change due to movement are foreground, anything that stays static would be the background. That has the potential for some very trippy effects when it gets it wrong. The same kind of thing could be done by storing a still image from the camera before you step in front of it, and always comparing it with the current live camera. -- uname -rsvp Linux 3.10.0-1160.15.2.el7.x86_64 #1 SMP Wed Feb 3 15:06:38 UTC 2021 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
