[cpia] webcam ii in linux, quality of pic

[Peter Pregler]

Hi,

I have put two images taken a few minutes ago on my web-server. You
are invited to chose which picture was taken with which software. 
The lighting conditions: sunny day, huge window in front of me.  The
two pictures were taken with:

- gqcam, cpia-0.5, CIF, default settings (I tried also setting the fps
  to 30 and compression to off, both did not change anything)
- windows cpia-control with settings set to video preview, highest
  quality, image size CIF, capture set to 24bit, which IMHO should
  produce best quality

The url is http://www.risc.uni-linz.ac.at/people/ppregler/cpia
Both images are about 13K big. I cannot see any significant quality
difference. The exposure is a bit different. That is about all. And
I think I could have adjusted that with manual exposure control via
the control client.

My guess for your problem: maybe the default settings for the linux
client is bad for indoor lighting. Please try out the control client.
If you find any better settings send me the values so I can do tests.

-Peter

On 04-Feb-2000 David Cougle wrote:
> 
> I got my usb webcam ii working in linux, but the quality is
> somewhat shoddy.
> http://www.slidellweb.com/dcougle/withlinux.jpg
> 
> same with camstream and xawtv
> 
> obviously the file size is much smaller than the next one, but im
> showing
> the increase in quality...
> http://www.slidellweb.com/dcougle/yay.jpg
> that's taken in windows.
> 
> and then, with my old parallel port quickcam2(which gets lower
> resolution
> than webcam ii)
> http://www.slidellweb.com/dcougle/images/newpic.jpg
> good quality, small file size.
> 
> 
> Is it possible to get the quality of the 2nd or 3rd picture with
> webcam ii
> in linux?
> what am i doing wrong?
> -- 
> http://www.slidellweb.com/dcougle
> ICQ #3795561
> Lunarbard on AOL(Instant Messenger)
> Proverbs 15:3
> Linux, operating system of the future
> "We will not be the alternative, we will set the trend"
> 
> 
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> 

-------------------------------
Even the thought that a ship was waiting to take him back to Earth
did not wipe out the sense of loss he felt at that moment.
-------------------------------
Email: Peter.Pregler@risc.uni-linz.ac.at
Peter Pregler / RISC, University of Linz, Austria