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Date: Thu, 14 Nov 2002 07:59:23 -0500
From: "Raymond E. Rogers"
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Subject: Re: Niosy A/D converter - an advantage ?
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Dithering is the correct word, try:
"Raymond E. Rogers" wrote:
> Perhaps the most extreme version might be considered to be
> the delta sigma converters that have 100% full scale dithering that is
> averaged down.
Apologies, my mind skipped a track on this. The statement is wrong. In
apology I will give a case where dithering will really enhance. I have
always thought that you could take a low resolution camera and use the
pixel edges to increase the spatial frequency response by moving it back
and forth; dithering. This would allow the high frequency sharp pixel
edges to scan the image. Then undo the motion to get a much higher
resolution and frequency picture through averaging. Humans do this
instinctively in some situations. I also think the human eye does this
automatically; but I don't know that for sure.
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