Re: Subpixel resolution

Interpolation methods are commonly used. There are many algorithms,
the simplest being simple linear interpolation between adjacent values,
and the more complex involving several adjacent values and polynomial
interpolations. Implementations can be quite simple using digital
convolution capabilities of DSP chips.
Paul Mathews

surfer wrote:
> I wonder what kind of algorithms are used in comuter document scanners
> (e.g., flat bed ) for high resolution scanning. There must be some
> kind of subpixel processing involved. Also, in addition to sub-pixel
> they must go beyond optical resolution of the lens. I wonder how.
>
> TIA
> Mike

.

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