On Fri, 2021-02-05 at 08:50 -0700, Greg Woods wrote:
> I looked into this with Zoom, because I wanted to have a nice
> background like my online bridge partner does. It turns out that Zoom
> does have a way to separate foreground from background that does not
> rely on a green screen. It mostly works although there are a few
> artifacts. However, this feature is only available on Windows. If you
> are running it on Linux, you need a green screen in order to use a
> virtual background.

I just used Zoom for the first time, this morning.  I had a ferret
around, but although I can see an option in meeting (advanced) settings
to enable it, I saw nothing else anywhere to actually make use of it. 
This is using their system through a web browser (Firefox).

> I use an old slide projector screen with a green cloth draped over
> it. It works well but is a pain to set up for every Zoom call.

The practical aspects of it are a big problem.

For many people, they've re-purposed a small bedroom as an office, and
there isn't room to set up extra equipment.  Your best bet is hanging
something from a picture hook, or leaning something up against a wall. 
You can get green & blue screens that have a springy outer border that
folds over itself like a car windscreen sun blocker, when you want to
pack it away.  They can stand up by themselves against a wall without
using any framework.  They even make ones that hang off the back of
your office chair, turning it into a big throne.  Though being that
close to it will probably have shadow problems.

The alternative is how we used to show slides and home movies without a
real screen.  Hang a cloth over the curtains.  Turn the end around a
broomstick, or spare curtain rod, a few times.  Bulldog clip or clothes
peg it to the rod.  Pop the rod over the top of your hanging curtains
to hold it in place.
 
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