Bob

Back in the day when I was working on marine navigation chart displays
we used separate color tables for different light conditions

we found that 3 tables sufficed, Day, Dusk/Dawn, Night

we cheated a bit and used 64 bit palettes  this way with a little trickery
we could pack everything into a normal 8 bit color table

In practice this worked quite well

HTH

Norman

On Mar 3, 2014, at 11:30 AM, "Basques, Bob (CI-StPaul)" 
<[email protected]> wrote:

> All,
>  
> So, I’ve been reading up on nighttime colors for electronic display(s).  I 
> was wondering if anyone has any pointers on information about applying color 
> temperature corrections to displays for nighttime viewing.  I’m in need of 
> providing this functionality to some night crew workers.
>  
> My first thought was to apply some sort of RGB algorithm to the mapfile color 
> settings.  Then I thought maybe a middleware  processor routine (between 
> MapServer and the browser) might be a better approach, or possibly using 
> something in the browser . . .
>  
> I’m only looking at setting up distinct color settings at the moment.  Maybe 
> 3-5 ranges to start with.  I do know that some Mac hardware has some display 
> monitoring for color temperature.  I would prefer to do something that could 
> apply globally however.
>  
> Maybe there are Browser functions that can be applied to the problem (I 
> haven’t found anything specific there yet though.
>  
> Thanks
>  
> Bobb
>  
>  
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