[sane-devel] requesting help with setup of Kodak 5100 AiO scanner

[NEWALL Paul]

Rob,
The kodak ESP AiO printers basically only scan in colour, and the gray
option is generated in software from the colour scan. It is possible that
there is something wrong with the conversion to gray that needs to be fixed.
We could generate a lineart option in a similar way.
First, can you do a scan of your document using the colour option with
default settings? just to check that the white paper comes out
approximately white and the black ink approximately black. If not there may
be something else that needs fixing to make the ESP5100 work before we can
do the conversion to lineart.

Paul Newall


On 3 September 2014 00:15, Rob Locher <rob at roblocher.com> wrote:

> Hello all,
>
> I have a Kodak 5100 All-in-One, and I'm trying to use XSane to scan with
> it.  I'm trying to scan a simple black-and-white text document as a
> bitmap, "line art" in other words, rather than sending the scan to OCR.
> The default settings for "Gray" result in a terrible scan, and I haven't
> been
> able to find much improvement by adjusting the gamma, brightness, and
> contrast.  My only two mode choices are "Color" and "Gray"; "Lineart" isn't
> an option for some reason.
>
> Here's an example of a scanned document, using the default "Gray" settings:
> http://www.idiompress.com/misc/kodak-5100-aio-grayscale-scan.png
>
> I can get a usable "line art" image if I tweak the gamma, brightness, and
> contrast as best I can, scan to GIMP, and then use GIMP's Threshold tool.
> But that is far too much work for a single page, and the process wouldn't
> work for a multi-page document that needs to be scanned to a single PDF
> file.  I haven't even tried scanning a color document yet, and I don't
> think the results would be very usable if I did.
>
> Would someone please point me in the right direction, or give me some
> advice, so that I can change the scanner default settings to be more useful?
>
> - Rob
>
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