Hi,
On Tue, Jul 16, 2002 at 06:07:31PM +0200, Oliver Rauch wrote:
> a threshold value is something that is clear to me.
> a brightness value can be implemented in a comparable way to a threshold
> value.
That was done in the mustek_usb backend. They used brightness as
inversed threshold. That's
Hi,
On Wed, Jul 17, 2002 at 07:40:09PM +0200, Oliver Rauch wrote:
> Henning Meier-Geinitz schrieb:
>
> > The mustek_usb backend does the calculation in software. Maybe it's
> > wrong but I think it just uses the gamma vectors as array like this:
> >
> > corrected_value = gamma_table [really_scan
Henning Meier-Geinitz schrieb:
> The mustek_usb backend does the calculation in software. Maybe it's
> wrong but I think it just uses the gamma vectors as array like this:
>
> corrected_value = gamma_table [really_scanned_value]
>
That is what xsane also does.
Did you define a preview gamma va
Hi,
On Tue, Jul 16, 2002 at 08:25:06PM +0200, Rene Rebe wrote:
> Speaking about the preview feature of xsane ... - for color scans
> xsane does a scan with gamma=1 and creates a software preview when the
> user modifes the gamma value. But for my avision backend the scanned
> images are not as lig
Hi Henning.
Speaking about the preview feature of xsane ... - for color scans
xsane does a scan with gamma=1 and creates a software preview when the
user modifes the gamma value. But for my avision backend the scanned
images are not as light as they are in the xsane preview. Although the
scan look
Henning Meier-Geinitz schrieb:
>
> Hi,
>
> On Mon, Jul 15, 2002 at 06:09:28PM +0200, Oliver Rauch wrote:
> > I do not understand how a backend can make available a
> > contrast and brightness option in lineart mode but no
> > threshold option.
>
> The mustek backend provides brightness and for s
Hi,
On Mon, Jul 15, 2002 at 06:09:28PM +0200, Oliver Rauch wrote:
> I do not understand how a backend can make available a
> contrast and brightness option in lineart mode but no
> threshold option.
The mustek backend provides brightness and for some scanners also
contrast, the mustek_usb backen
V K schrieb:
>
> this is the only useful alternative. Whether the backend supports a
> threshold or not is pretty irrelevant, xsane should scan in grayscale
> and display a threshold slider, but I can't see one anywhere.
In the current releases xsane does a grayscale preview scan and
converts it
> I already tried to answer your last mail directly to me
> but you should not use unusable from/reply adresses like:
> V K
> when you like to have an answer.
Sorry I stuffed up the addresses, and I wasn't expecting an answer.
Thanks for the patch, I'll try it out.
> Selecting lineart sho
Hello
I already tried to answer your last mail directly to me
but you should not use unusable from/reply adresses like:
V K
when you like to have an answer.
V K schrieb:
>
> > I just released xsane-0.87.
>
> 1)
>
> I see a lot of gtk problems:
>
> Viewer, changing between Halftone
> I just released xsane-0.87.
1)
I see a lot of gtk problems:
Viewer, changing between Halftone and Lineart, and changing Halftone
pattern in advanced options. Keeps running though.
Gtk-CRITICAL **: file gtkbox.c: line 368 (gtk_box_pack_end): assertion `child
!= NULL' failed.
Gtk-CRITICAL **:
Hi,
On Sun, Jul 14, 2002 at 10:44:56AM +1200, V K wrote:
> 3) I have a huge conceptional problem with scanning 2-colour images and
> applying a threshold. There isn't anywhere to set a threshold value.
> The scanning itself would have to be done at grayscale of course. This
> seems a basic operati
Hi.
I just released xsane-0.87.
It can be downloaded from:
http://www.xsane.org
There are a lot of changes and improvements:
- preview_update_maximum_output_size: function sets block bit
at beginning of routine and resets it at end of routine, this
way it is made sure that the fu
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