On Thu, 2021-08-12 at 17:57 +0930, Tim via users wrote:
On Wed, 2021-08-11 at 13:09 +0100, Patrick O'Callaghan wrote:
> My USB camera, which is used only for online video chats, has quite
> marked fisheye distortion. Although this could be regarded as a
> feature in some contexts, for me it's just a distraction. Is there
> a
> way of removing this in real time? I mostly use Zoom, but if
> possible
> I'd like to tweak the video somewhere between the driver and the
> application, in other words create a "virtual camera" that works
> the
> way I want, perhaps analogous to how audio pipelines work in Linux.
Probably the easiest approach is get a better camera, but that's not
always desirable. I got a real cheapie, and it doesn't have that
problem.
I've already been through several cameras but this is the first one
with acceptable sound. It's only for occasional use so I'm not that
keen on spending a lot. In fact I saw an article recently on webcams
which concluded that there are no good ones ...
Basically, the problem is a tiny image sensor needs a super wide-
angle
lens to get a wide-enough image on a tiny sensor. You either
increase
the sensor size, or built a better lens.
I notice people offering a software filter to add reverse distortion
to
the image in obs-studio, it's possible the same algorithms might work
in other software. One of them tweaked a sharpness filter that came
with the program, so you didn't have to figure out how to add an
extra
filter.
It's damn hard to search for answers for a program called zoom,
seeing
as it uses the same name as a zoom lens. I wish programs wouldn't
pick
such generic, and inappropriate names. There's nothing zoomy about a
chat program.
Yep.
poc