backlight and filters - algorithms needed

[Mads Bondo Dydensborg]

On Thu, 25 Nov 1999, Peter Pregler wrote:

> Hi all,
> 
> I recently compared the output of our driver with the m$-stuff and found
> the following obvious difference. There is a 'backlight' option and some
> 'filters (50/60Hz)' that one can switch on/off in the m$-video panel. The 
> first one is usefull in dark scenes. In case of compressed mode the image
> looks less grainy. 

Compensation gains?

> The second one eliminates horizontal stripes that seem
> to occur during exposure changes. 

I think this would be the flicker control. It is documented in the 
"Notes on use of the CPiA command set", p. 3-34, section 3.12.1 ff.

> Has anyone an idea what kind of image
> processing filters those are?

My best guess is above.

Mads

-- 
Mads Bondo Dydensborg.                               madsdyd@challenge.dk
  7)  Sacrifice a small animal for Good Luck

 (step 7 of 8 in configuring the Open Source Global File System for Linux)

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