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Digital Noise Removal Filters


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Old 30-10-2006, 18:37
Brush Master
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Join Date: May 2004
Location: London, U.K.
Posts: 1,560

A question for all digital camera and image buffs out there:

I learned about Digital Noise Filters recently (elsewhere on this site, I believe), and someone strongly recommended applying such a filter when processing images taken with digital cameras.

I tried it (using Paint Shop Pro XI) using the default raster size and a quarter of the default. In both cases, the image has not gained but actually lost detail. Mind you, I used high-res images (a 6MB camera) of grainy surfaces (sandstone).

Is digital noise an effect inherent to the CCD, and what factors determine its proportion? What's the deal?
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