[APML] Re: Vinetting and SGBNR info

[Matt BenDaniel <matt@starmatt.com>]

At 02:15 PM 5/23/2002, Juan Conejero wrote:
>...For the Matt's LMC image we used image masks. We found that uniform 
>masks are not appropriate for this case, the main reason being that there 
>is no noise to remove in the brightest areas of the image, especially the 
>bright nebulas: uniform masks "wash" them too much.

Juan,

My understanding is that high-density areas usually don't need as much of 
(or any) grain reduction. In fact, bright areas often benefit from 
sharpening, while dim areas are grainier and benefit most from smoothing. 
Is that right?

Matt
--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


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