🚀 go-pugleaf

In article <1992Jul17.185546.7669@rz-berlin.mpg.de> van_heel@rz-berlin.mpg.de writes:
>
>      My specific question:  can I use a 512x512x8 bit CCD chip to obtain 
>      a 256x256x10 bit image?
>
>     
>
>   PS.   Please E_mail me your answers/suggestions directly since
>         I will not be at my desk for the next weeks and will
>         thus not be able to read this news-group
>
>
>-------------------------------------------------------------------      
>
>      Marin van Heel 
I did as the author requested, but then I thought this might be also
interesting to the group at large...


No, you can not even use an 8 bit CCD to get a good 8 bit image. They
tend to be horribly non linear in the lower order bits. 
There was a company making something that could get 2k images out
of a 512 ccd. They basically shook it alot and interpolated the data.
The results looked good. Oh wait, here is a idea. You could
take an 8 bit CCD, and if you knew its freq. resp. curve characterizations,
you could capture multiple exposures with different integration times, and
interpolate the color out to a greater bit depth.

Has anyone out there done this? Of course you had better have a still object.
-Rich
  rstewart@megatek.com
  rstewart@megatek.uucp
  ucsd!megatek!rstewart