Re: [APML] Histograms

[Matt BenDaniel <matt@starmatt.com>]

At 03:28 PM 4/29/2002, Alan Voetsch wrote:
> >as
> > > long as you know how to configure the histogram
> > correctly before
> > > switching into 8-bit mode and as long as you use
> > layers.
>
>Ok. Now can anyone answer me this: How does one learn
>to recognize when a histogram is properly configured?
>What are we looking for? How do we learn this?

Alan,

The shape of the histogram depends on what's in the FOV and the how it is 
processed. There is discretion in the processing. One thing that is easy to 
tell is whether the histogram is clipped. You generally do not want a 
clipped histogram in the early processing steps, because clipping throws 
away data that may be useful. To see what clipping looks like see:
http://world.std.com/~mattb/articles/curves.htm
--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


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