[softwarelist] Re: Halftone scanning
- From: Dave Barnett <dave@xxxxxxxxxxxxxxxxx>
- To: davidpilling@xxxxxxxxxxxxx
- Date: Wed, 28 Nov 2007 09:22:24 GMT
In a recent message David Pilling
<flist@xxxxxxxxxxxxxxxxxxx> wrote:
> In message <aa667c484f.Dave@xxxxxxxxxxxxxxxxxxxxxxxx>, Dave Barnett
> <dave@xxxxxxxxxxxxxxxxx> writes
>>As far as I was concerned DplngScan and TWAIN were joined at the hip.
>
> No you can use both of them without the other.
I have used DpScan stand-alone to tweak images from a number of
sources, very useful. My version of !TWAIN does not load to the
iconbar, so I don't know its version or stand-alone capability.
>
[...]
>
>>The best result is obtained using 100dpi Grey with Superscale, dither
>>makes no difference. This is very acceptable. Mottling is no longer
>>apparent (as scanned).
>
> Dan made a good point. Moire patterning can also be due to the monitor
> screen - the magnify tool in DPscan has a button "rational" which gets
> rid of such effects by displaying one image pixel per screen pixel.
>
That has no effect. Increasing dpi above 100 increases problem. I am
happy with results for this image.
OT ? One thing that I have found for DPscan is that increasing the
'Next' bar on the Task display reduces the incidence of 'Type 5'
errors.
--
Dave
Keep GMT all year
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