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Month: October 2015

Re: [trinity-users] cheese like program in TDE?

From: Gene Heskett <gheskett@...>
Date: Fri, 9 Oct 2015 05:06:32 -0400
On Friday 09 October 2015 01:07:19 Thierry de Coulon wrote:

> On Friday 09 October 2015 04.55:16 Gene Heskett wrote:
> > Greetings all;
> >
> > I just bought some webcams, and the std viewer for a webcam has been
> > cheese for quite a while now.  But its not part of TDE , and when I
> > had apt-get install it, it pulled in about 23 more megabytes worth
> > of dependencies.
> AFAIK Cheese is a Gnome application, so I suppose that that particular
> machine did not have (required) part of Gnome installed
> (...)
> > Does anyone know of a TDE viewer that just works for a webcam?
> TDE no, but I usually use guvcview (which is Gtk+) that does fit my
> (very limited) webcam requirements.
> Thierry
Thank you.  That also segfaults, unless you give it a valid device name 
argument, then it works.  As does VLC.  I've installed both v4l and v4l2 
utility's but v4l2 can't find it, and will not accept text entry in the 
open device box.  So I guess its a simple v4l device. 

Sitting here in the dark with nothing but the monitor for illumination, 
its giving me a pretty quality decent pix of me, not that I can be 
called decent sitting here in an undershirt.  But nobody at 81 looks 
good & I'm no exception. :( The front of the lens says 10x optical zoom, 
but the only control I can find is optical focus.  At this light level 
its making about 8 fps.  And to call it 640x480 is somewhat "carnival 
barker" stretched.  But it works, and given a solid mount, it can 
probably be used as a locator device for machine vision.  We have some 
utility's that can control a milling machine so that it can be mounted 
and aimed straight down, that can be used to first, calibrate its vision 
offset from the machine, then offset the machine so we can find a 
spot/registration mark, record it its X&Y location a couple times, and 
which will then move the machine back to where the tool is on that spot.  
And if the two registration marks aren't aligned along an axis, can 
modify the gcode on the fly to align the machines paths traveled with 
those marks even it its rotated 90 degrees when the workpiece was 
clamped down on the table.

Thanks THierry.  At least I know it can "make pictures" now.  Which for a 
less than 9 USD camera, amazes the heck out of me.

Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <>